division 11 equipment - pr · pdf fileunless otherwise specified or shown, all welding shall...

ORLANDO:45530-003 S011000 SEMINOLE COUNTYYANKEE LAKE WRF R&R

DIVISION 11

EQUIPMENT


11000-1 EQUIPMENT GENERAL PROVISIONS

SECTION 11000 – EQUIPMENT GENERAL PROVISIONS

PART 1 -- GENERAL

1.01 THE REQUIREMENT

A. Provide all tools, supplies, materials, equipment, and all labor necessary for the furnishing,construction, installation, testing, and operation of all equipment and appurtenant work,complete and operable, all in accordance with the requirements of the Contract Documents.

B. The provisions of this Section shall apply to all equipment specified and where referred to,except where otherwise specified or shown.

C. All equipment of the same type (i.e. Centrifugal Pumps, Vertical Turbine Pumps, etc.),although for different systems, shall be supplied by the same manufacturer.

D. All equipment shall be of first class workmanship and shall be entirely designed and suitablefor the intended services. All equipment shall be manufactured in accordance withapplicable industry standards.

E. All materials used in fabricating the equipment shall be new and undamaged. All materialsshall conform to applicable provisions of the AISC Specifications for the design andfabrication of structural steel, AWS Welding Specifications and to pertinent ASTM StandardSpecifications.

1.02 RELATED WORK SPECIFIED ELSEWHERE

A. Division 1 - General Requirements

B. Section 05500 - Metal Fabrications

C. Section 09900 - Painting.

D. Section 11100 - Pumps, General

E. Division 15 - Mechanical

F. Division 16 - Electrical

G. Division 17 - Instrumentation

1.03 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS

A. CONTRACTOR shall be familiar with all codes as referenced herein or shall otherwiserequest clarification if referenced codes are not fully understood.

B. Control Submittals: For each equipment submittal, submit, as a minimum, a completedescription of the proposed control functions and where such controls will be located. Forequipment packages that include control panels, field instruments, programmablecontrollers, and other control elements, submit complete control panel shop drawings, wiring



diagrams, and interface wiring diagrams. Submit catalog information on all panel and fieldmounted control components and instruments supplied. Submit detailed catalog informationon proposed programmable controller components, operator interface units, and powersupply components. Submittals shall be similar to that specified under Division 17. Aftercompletion of control programming, submit complete listing and descriptions of registeraddresses used for interface over the plant control network communications.

C. Commercial Standards

1. All equipment, products, and their installation shall be in accordance with thefollowing standards, as applicable, and as specified in each Section of thesespecifications:

a. American Society for Testing and Materials (ASTM).

b. American Public Health Association (APHA).

c. American National Standards Institute (ANSI).

d. American Society of Mechanical ENGINEERs (ASME).

e. American Water Works Association (AWWA).

f. American Society of Heating, Refrigerating, and Air ConditioningENGINEERs (ASHRAE).

g. American Welding Society (AWS).

h. National Fire Protection Association (NFPA).

i. Federal Specifications (PS).

j. National Electrical Manufacturers Association (NEMA).

k. Manufacturer's published recommendations and specifications.

l. General Industry Safety Orders (OSHA).

m. American Gear Manufacturers Association (AGMA).

n. American Hot Dip Galvanizers Association (AHDGA).

o. American Standards Association (ASA).

p. National Association of Corrosion ENGINEERs (NACE).

q. Anti-Friction Bearing Manufacturers Association, Inc. (AFMBA).

r. Underwriters' Laboratories, Inc. (UL).



D. The following standards have been referred to in this Section of the specifications:

1. ANSI B16.1 Cast Iron Pipe Flanges and Flanged Fittings Class 25, 125,250, and 800.

2. ANSI B16.5 Pipe Flanges and Flanged Fittings, Steel, Nickel Alloy, andOther Special Alloys.

3. ANSI B46.1 Surface Texture.

4. ANSI S12.6 Method for the Measurement of the Real-Ear Attenuation ofHearing Protectors.

5. ANSI/ASME Bl.20.1 General Purpose Pipe Threads (Inch).

6. ANSI/ASME B31.1 Power Piping.

7. ANSI/AWWA D100 Welded Steel Tanks for Water Storage.

8. AWWA C206 Field Welding of Steel Water Pipe.

9. ASTM A 48 Specification for Gray Iron Castings.

10. ASTM A 108 Specification for Steel Bars, Carbon, Cold-Finished, StandardQuality.

1.04 SUBMITTALS

A. Shop Drawings: Submit complete shop drawings for all equipment specified in the variousSections, together with all piping, valves, and controls for review by the ENGINEER inaccordance with Section entitled "Submittals."

B. Spare Parts

1. Obtain and submit from the manufacturer a list of suggested spare parts for eachpiece of equipment. After review by the ENGINEER, CONTRACTOR shall furnishsuch spare parts suitably packaged, identified with the equipment number, andlabeled. CONTRACTOR shall also furnish the name, address, and telephonenumber of the nearest distributor for each piece of equipment. All spare parts areintended only for use by the OWNER after expiration of the guaranty period.

2. The spare parts list shall indicate specific sizes, quantities, and part numbers of theitems to be furnished. Terms such as "1 lot of packing material" are not acceptable.

1.05 MANUFACTURERS

A. All equipment covered by the specifications are intended to be standard equipment andmanufactured by reputable manufacturers having experience in the production of suchequipment. Furnish equipment that is designed, constructed and installed in accordancewith the best practices and methods and shall operate satisfactorily.



1.06. MANUFACTURER'S EXPERIENCE

A. Unless otherwise directed by the ENGINEER, all equipment furnished shall have a record ofat least 5 years of successful, troublefree operation in similar applications, from the samemanufacturer.

1.07 SERVICES OF MANUFACTURER'S REPRESENTATIVE

A. Unless otherwise specified in the individual specification sections, provide the services of aqualified manufacturer's factory technical representative who shall adequately supervise theinstallation and testing of all equipment furnished under this Contract and instruct theCONTRACTOR's personnel and the OWNER's operating personnel in its maintenance andoperation as outlined in the General Conditions and Division 1 entitled "GeneralRequirements".

B. Any additional time required to achieve successful installation and operation shall be at theexpense of the CONTRACTOR.

C. The manufacturer's representative shall sign in and out at the office of the Resident ProjectRepresentative on each day present at the project.

1.08 QUALITY ASSURANCE

A. Inspection, Startup, and Field Adjustment

1. All equipment testing and startup shall be in accordance with Section entitled“Startup and Checkout”, and as specified herein.

2. Demonstrate that all equipment meets the specified performance requirements.Provide the services of an experienced, competent, and authorized servicerepresentative of the manufacturer of each item of major equipment who shall visitthe site of Work, and as necessary, to perform the following tasks:

a. Assist the CONTRACTOR in the installation of the equipment.

b. Inspect, check, adjust if necessary and approve the equipment installation.

c. Start-up and field-test the equipment for proper operation, efficiency, andcapacity. Pump efficiency shall be based on factory laboratory testing.

d. Perform necessary field adjustments during the test period until theequipment installation and operation are satisfactory to the ENGINEER.

e. Instruct the OWNER's personnel in the operation and maintenance of theequipment.

3. The costs of all inspection, startup, testing, adjustment, and instruction workperformed by said factory-trained representatives shall be borne by theCONTRACTOR.



4. The time allocated in the equipment Specification Sections for the manufacturer'srepresentative are minimum times only. Any additional time required to complete theinstallation, checkout, training, and placing in full operation to the satisfaction of theCity shall be furnished by the CONTRACTOR.

B. Public Inspection: Inform the local authorities, such as building and plumbing inspectors, firemarshal, OSHA inspectors, and others, to witness all required tests for piping, plumbing, fireprotection systems, pressure vessels, safety systems, etc., to obtain all required permits andcertificates, and pay all fees.

C. Tolerances: Tolerances and clearances shall be as shown on the shop drawings and shallbe closely adhered to. Machine work shall in all cases be of high-grade workmanship andfinish, with due consideration to the special nature or function of the parts. Members withoutmilled ends and which are to be framed to other steel parts of the structure may have avariation in the detailed length of not greater than 1/16 of an inch for members 30 feet orless in length, and not greater than 1/8 of an inch for members over 30 feet in length.

D. Machine Finish

1. Use the type of finish most suitable for the application and shall be shown inmicro-inches in accordance with ANSI B46.1. The following finishes shall be used:

a. Surface roughness not greater than 63 micro-inches shall be required for allsurfaces in sliding contact.

b. Surface roughness not greater than 250 micro-inches shall be required forsurfaces in contact where a tight joint is not required.

c. Rough finish not greater than 500 micro-inches shall be required for othermachined surfaces.

d. Contact surfaces of shafts and stems which pass through stuffing boxes andcontact surfaces of bearings shall be finished to not greater than 32micro-inches.

1.09 CLEANUP: After completion of the installation and testing, remove all debris from the site,clean all equipment and controls, and hand over its work in perfect operating condition inaccordance with Section 01700 entitled "Project Closeout".

1.10 GUARANTEES, WARRANTIES

A. After completion, furnish to the OWNER the manufacturer's written guarantees that theequipment will meet all requirements of these specifications. The CONTRACTOR shall alsofurnish the manufacturer's warranties as published in its literature and as specified.

B. Unless otherwise noted, the contractor shall warrant all parts, free from defective materialand workmanship for a period of two years following the date of substantial completion, andfurnish and install for the OWNER any such items found to be defective within the two-yearperiod.



1.11 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. The CONTRACTOR shall be responsible for the delivery, storage, and handling of products.

B. Load and unload all equipment and appurtenances by hoists or skidding. Do not dropproducts. Do not skid or roll products on or against other products. Pad slings and hooks in amanner which prevents damage to products.

C. Promptly remove damaged products from the job site. Replace damaged products withundamaged products.

1.12 TOOLS, SUPPLIES AND SPARE PARTS

A. Identify parts with a numerical system to facilitate parts inventory control and stocking. Eachpart shall be identified by a separate number. Parts which are identified for more than onesize unit shall have the same number.

B. All special tools required to disassemble, service and adjust the equipment shall befurnished by the equipment manufacturer. All tools shall be supplied in a suitable tool chestor case complete with lock and duplicate keys.

PART 2 -- PRODUCTS

2.01 GENERAL REQUIREMENTS

A. Noise Level: When in operation, no single piece of equipment shall exceed the OSHA noiselevel requirements for a one-hour exposure.

B. Service Factors: Apply service factors in the selection or design of mechanical powertransmission components.

C. For service factors of electric motors, see Section entitled "Motors." Where loadclassifications are not specified, use best modern practice.

D. Welding

1. Unless otherwise specified or shown, all welding shall conform to ANSI/AWWAD100 and AWWA C206.

2. All composite fabricated steel assemblies which are to be erected or installed insidea hydraulic structure, including any fixed or movable structural components ofmechanical equipment, shall have continuous seal welds to prevent entrance of airor moisture.

3. All welding shall be by the metal-arc method or gas-shielded arc method asdescribed in the American Welding Society's "Welding Handbook" as supplementedby other pertinent standards of the AWS. Qualification of welders shall be inaccordance with the AWS Standards governing same.

4. In assembly and during welding, the component parts shall be adequately clamped,supported, and restrained to minimize distortion and for control of dimensions. Weld



reinforcement shall be as specified by the AWS code. Upon completion of welding,all weld splatter, flux, slag, and burrs left by attachments shall be removed. Weldsshall be repaired to produce a workmanlike appearance, with uniform weld contoursand dimensions. All sharp corners of material which is to be painted or coated shallbe ground to a minimum of 1/32-inch on the flat.

E. Protective Coatings

1. Paint or coat all equipment in accordance with Section 09900, "Painting," unlessotherwise approved by the ENGINEER. Coat non-ferrous metal rotating/lubricatedand corrosion-resisting steel surfaces with grease or lubricating oil. Protect coatedsurfaces from abrasion or other damage during handling, testing, storing, assembly,and shipping.

2. For gears, bearing surfaces, and other similar surfaces obviously not to be painted,apply a heavy shop coat of grease or other suitable rust-resistant coating. Thiscoating shall be maintained as necessary to prevent corrosion during periods ofstorage and erection and shall be satisfactory to the ENGINEER up to the time of thefinal acceptance.

F. Protection of Equipment

1. Box, crate, or otherwise protect all equipment from damage and moisture duringshipment, handling, and storage. Protect all equipment from exposure to corrosivefumes and keep thoroughly dry at all times.

2. Store equipment that has moving parts such as gears, electric motors, etc. and/orinstruments, control panels, switchgear in a temperature and humidity controlledbuilding until such time as the equipment is to be installed.

3. Store equipment with electric motors having space heaters with the space heatersenergized unless stored in a temperature and humidity controlled building. Spaceheaters shall be energized at the time of installation and maintained until acceptanceof the equipment.

4. For exterior storage of fabricated products, place the items on sloped supportsabove ground. Cover Products subject to deterioration with impervious sheetcovering and provide ventilation to avoid condensation.

G. Identification of Equipment Items: Each item of equipment shipped shall have a legibleidentifying mark corresponding to the equipment number and/or equipment name andnumber shown or specified for the particular item.

H. Vibration Level: Provide all equipment subject to vibration with restrained spring-typevibration isolators or pads per manufacturer’s written recommendations.

I. Shop Fabrication: Perform shop fabrication in accordance with the Contract Documents andthe final reviewed and processed shop drawings.



2.02 EQUIPMENT SUPPORTS AND FOUNDATIONS

A. Equipment Supports: All equipment supports, anchors, and restrainers shall be adequatelydesigned for static and dynamic loads.

B. Equipment Foundations: Provide equipment foundations in accordance with details shownon the Drawings but revise to meet manufacturer's written recommendations when there is adiscrepancy. Mount all mechanical equipment, tanks, control cabinets, etc. on minimum4-inch high concrete bases, as shown on standard structural details, unless otherwiseshown or specified. Submit foundation drawings to the ENGINEER for review in accordancewith the requirements of Section 01300, "Submittals."

2.03 PIPE HANGERS, SUPPORTS, AND GUIDES

A. Support, anchor, and guide all pipe connections to avoid stress and loads on equipmentflanges and equipment. Supports and hangers shall be in accordance with the requirementsof Section 15020 entitled "Pipe Supports."

2.04 FLANGES AND PIPE THREADS

A. All flanges on equipment and appurtenances provided under this Section shall conform toANSI B16.1, Class 125; or B16.5, Class 150, unless otherwise shown. All pipe threads shallbe in accordance with ANSI/ASME Bl.20.1, in accordance with requirements of Sectionentitled "Piping, General."

2.05 COUPLINGS

A. Provide couplings between the driver and the driven equipment to accommodate angularmisalignment, parallel misalignment, end float, and to cushion shock loads. Where requiredfor vertical shafts, 4-piece spacer couplings shall be installed.

B. The CONTRACTOR shall have the equipment manufacturer select or recommend the sizeand type of coupling required to suit each specific application.

C. Taperlock bushings may be used to provide for easy installation and removal on shafts ofvarious diameters.

D. Where universal type couplings are shown, they shall be of the needle bearing typeconstruction, equipped with commercial type grease fittings.

E. Couplings shall be as shown on the Drawings. If not shown, couplings shall be asmanufactured by the selected pump manufacturer.

2.06 SHAFTING

A. All shafting shall be continuous between bearings and shall be sized to transmit the powerrequired. Keyways shall be accurately cut in line. All shafts shall rotate in the end bearingsand shall be turned and polished, straight, and true.

B. Materials: Shafting materials shall be appropriate for the type of service and torquetransmitted. Environmental elements such as corrosive gases, moisture, and fluids shall be



taken into consideration. Materials shall be as shown or specified unless furnished as partof an equipment assembly.

1. Pump shaft material shall be pump shaft quality 416 stainless steel.

2. Pump shaft shall be a one (1) piece design if overall shaft length is twenty (20) feetor less. Additional shaft lengths shall be limited to ten (10) feet maximum couplings.

3. Shafts over two inches in diameter requiring line shaft couplings shall be the splitring and keyed type. On smaller shafts, threaded couplings may be used, but themotor must have a non-reverse ratchet.

C. Differential Settlement: Where differential settlement between the driver and the drivenequipment may be expected, a shaft of sufficient length with 2 sets of universal typecouplings shall be provided.

2.07 BEARINGS

A. Bearings shall conform to the standards of the Anti-Friction Bearing ManufacturersAssociation, Inc. (AFBMA). All bearings for equipment driven by inverter duty rated motorsshall be insulated type, for both ends.

B. To assure satisfactory bearing application, consider fitting practice, mounting, lubrication,sealing, static rating, housing strength, and other important factors in bearing selection.

C. All grease-lubricated type bearings shall be equipped with a hydraulic grease fitting in anaccessible location and shall have sufficient grease capacity in the bearing chamber.Grease fittings and lubrication lines shall be stainless steel.

D. All lubricated-for-life bearings shall be factory-lubricated with the manufacturer'srecommended grease to insure maximum bearing life and best performance.

E. Except where otherwise specified or shown, all bearings shall have a minimum B-10 lifeexpectancy of 60,000 hours.

F. Bearing housings shall be of cast iron or steel and bearing mounting arrangement shall beas specified or shown, or as recommended in the published standards of the manufacturer.Split-type housings may be used to facilitate installation, inspection, and disassembly.

G. Sleeve-type bearings shall have a Babbitt or bronze liner.

2.08 GEARS AND GEAR DRIVES

A. Unless otherwise specified, gears shall be of the helical or spiral-bevel type, designed andmanufactured in accordance with AGMA Standards, with a minimum service factor of 1.7, aminimum B-10 bearing life of 60,000 hours and a minimum efficiency of 94 percent. Wormgears shall not be used, unless specifically accepted by the ENGINEER.

B. All gear speed reducers or increasers shall be of the enclosed type, oil- or grease-lubricatedand fully sealed, with a breather to allow air to escape but keep dust and dirt out. Thecasing shall be of cast iron or heavy-duty steel construction with lifting lugs and an



inspection cover for each gear train. As a minimum, an oil level sight glass and an oil flowindicator shall be provided, arranged for easy reading. Grease fittings and lubrication linesshall be stainless steel.

C. Gears and gear drives as part of an equipment assembly shall be shipped fully assembledfor field installation.

D. Material selections shall be left to the discretion of the manufacturer, provided the aboveAGMA values are met. Input and output shafts shall be adequately designed for the serviceand load requirements. Gears shall be computer-matched for minimum tolerance variation.The output shaft shall have 2 positive seals to prevent oil leakage.

E. Oil level and drain location relative to the mounting arrangement shall be easily accessible.Oil coolers or heat exchangers with all required appurtenances shall be furnished whennecessary.

F. Where gear drive input or output shafts have to connect to couplings or sprockets suppliedby others, the CONTRACTOR shall have the gear drive manufacturer supply matching keytaped to the shaft for shipment.

2.09 DRIVE CHAINS

A. Power drive chains shall be commercial type roller chains and meet ANSI Standards.

B. Provide a chain take-up or tightener in every chain drive arrangement to provide easyadjustment.

C. Provide a minimum of one connecting or coupler link with each length of roller chain.

D. Chain and attachments shall be of the manufacturer's best standard material and suitable forthe process fluid.

2.10 SPROCKETS

A. Use sprockets in conjunction with all chain drives and chain-type material handlingequipment.

B. Materials

1. Unless otherwise specified, materials shall be as follows:a. Sprockets with 25 teeth or less, normally used as a driver, shall be made of

medium carbon steel in the 0.40 to 0.45 percent carbon range.

b. Type A and B sprockets with 26 teeth or more, normally used as drivensprockets, shall be made of minimum 0.20 percent carbon steel.

c. Large diameter sprockets with Type C hub shall be made of cast ironconforming to ASTM A 48, Class 30.

C. All sprockets shall be accurately machined to ANSI Standards. Sprockets shall have deephardness penetration in tooth sections.



D. Furnish finish bored sprockets complete with keyseat and set screws.

E. To facilitate installation and disassembly, sprockets shall be of the split type or shall befurnished with taper-lock bushings as required.

F. Furnish idler sprockets with brass or Babbitt bushings, complete with oil hole and axial orcircumferential grooving. Steel collars with setscrews may be provided in both sides of thehub.

2.11 V-BELT DRIVES

A. V-belts and sheaves shall be of the best commercial grade and shall conform to ANSI,MPTA, and RMA Standards.

B. Unless otherwise specified, sheaves shall be machined from the finest quality gray cast iron.

C. All sheaves shall be statically balanced. In some applications where vibration is a problem,sheaves shall be dynamically balanced. Sheaves operating at belt speeds exceeding 6,500fpm may be required to be of special materials and construction.

D. To facilitate installation and disassembly, furnish sheaves complete with taper-lock or QDbushings as required.

E. Furnish finish bored sheaves complete with keyseat and set screws.

F. Provide sliding motor bases to adjust the tension of V-belts. Positive displacement blowermanufacturers may use a pivoting motor base for automatic tensioning of the v-belts.

2.12 DRIVE GUARDS

A. Guard all power transmission, prime movers, machines, and moving machine parts toconform with the OSHA Safety and Health Standards (29 CFR 1910). Where required forlubrication or maintenance, guards shall have hinged access doors.

2.13 INSULATING CONNECTIONS

A. Insulating bushings, unions, couplings, or flanges, as appropriate, shall be used inaccordance with the requirements of the Section 15000 entitled "Piping, General."

2.14 GASKETS AND PACKINGS

A. Gaskets shall be in accordance with the requirements of Section entitled "Piping, General."

B. Packing around valve stems and reciprocating shafts shall be of compressible material,compatible with the fluid being used. Chevron-type "V" packing shall be Garlock No. 432,John Crane "Everseal," or approved equal.

C. Packing around rotating shafts (other than valve stems) shall be "O"-rings or similar seals, ormechanical seals, as recommended by the manufacturer and accepted by the ENGINEER.



2.15 NAMEPLATES

A. Engrave or stamp stainless steel equipment nameplates and fasten to the equipment in anaccessible location with No. 4 or larger oval head stainless steel screws or drive pins.Nameplates shall contain the manufacturer's name, model, serial number, size,characteristics, and appropriate data describing the machine performance ratings.

2.16 SAFETY REQUIREMENTS

A. Where work areas are located within a flammable or toxic gas environment, suitable gasdetection, ventilating, and oxygen deficiency equipment shall be provided. Equip workerswith acceptable breathing apparatus.

2.17 OVERLOAD PROTECTION

A. Unless otherwise specified in individual equipment Sections, provide all major equipmentdrives with mechanical or electrical overload protection device as specified in the followingparagraphs.

B. Mechanical System

1. The overload protection shall be a mechanical device to provide for reliableprotection in the event of excessive overload. It shall be a ball detent type designedfor long-term repeatability and life. It shall be infinitely adjustable by a singleadjusting nut. Once set it shall be tamperproof, and incorporate a torque monitoringand control system. It shall activate an alarm set for 85 percent, and a motor cutoutswitch set for 100 percent of maximum continuous running torque.

2. A visual torque indication shall be provided and oriented so that it may be read fromthe walkway. The dial shall be calibrated from 0 to 100 percent of maximumcontinuous running torque. The design of the torque limiter should initiate themechanical disengagement of the drive upon overload. Each unit shall be suitablefor outdoor/corrosive environments with a protective finish, corrosion inhibitinglubricants and a stainless steel cover.

C. Electronic System

1. As an alternative to the mechanical system, the overload protection may be anElectronic Torque Monitoring Control System capable of displaying torque, rpm's,one level of overload and two levels of overload of the drive system. It shallincorporate a time-delay for start-up and a voltage monitoring and compensationcircuit for up to +/- 15 percent variation.

D. The overload device shall have an enclosure suitable for outdoor installation at temperaturesof 0-70 degrees C, and relative humidity up to 100%, unless unit is in an air conditionedenvironment where 95 percent shall be acceptable. A visual torque dial shall be providedand oriented so that it can be easily read from the walkway.

E. The torque monitoring system shall be calibrated to: alarm and shut down the system in theevent the torque drops to 50 percent of normal running; alarm at 85 percent of maximum



continuous running torque and shut down the motor at maximum continuous running torqueof the equipment. The system shall be calibrated at the factory of the equipmentmanufacturer and it shall be capable of monitoring twice the maximum continuous runningtorque of the equipment.

F. Manufacturers, or Approved Equal

1. American Autogard Corporation

2. Ferguson Machine Company

3. Siemens/Furnas

PART 3 -- EXECUTION

3.01 INSTALLATION

A. Install all equipment in accordance with acceptable procedures submitted with the shopdrawings and as indicated on the Drawings, unless otherwise accepted by the ENGINEER.

B. Alignment: Field test equipment to verify proper alignment, operation as specified, andfreedom from binding, scraping, vibration, shaft runout, or other defects. Measure driveshafts just prior to assembly to ensure correct alignment without forcing. Secure equipmentin position and make neat in appearance.

C. Lubricants: The installation work shall include furnishing the necessary oil and grease forinitial operation.

D. Couplings: Install the equipment in accordance with the equipment manufacturer's printedrecommendations.

E. Insulating Connections: Install all insulating connections in accordance with themanufacturer's printed recommendations.

F. Pipe Hangers, Supports and Guides: Space hangers in accordance with ANSI/ASME B.31.Iand with tables in Section 15000 entitled "Piping, General."

3.02 PROTECTIVE COATING

A. Field coat all exposed materials, except corrosion-resistant metals which have not beenshop painted as specified in Section 09900 entitled "Painting." Touch-up shop painted itemswhich suffered damage to the shop coating as specified in said "Painting" section.

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11100-1 PUMPS GENERAL

SECTION 11100 - PUMPS, GENERAL

PART 1 -- GENERAL


A. The CONTRACTOR shall provide all tools, supplies, materials, equipment and labornecessary for furnishing, installing, testing, and placing into operation of all pumps andpumping appurtenances, complete and operable, all in accordance with therequirements of the Contract Documents.

B. The provisions of this Section shall apply to all pumps and pumping equipment specified,except where otherwise specified in the Contract Documents.


A. Submittals.

B. Metals.

C. Painting.

D. Equipment General Provisions.

E. Piping.

F. Electric Motors.

G. Electrical General Provisions.

H. Instrumentation

1.03 REFERENCE SPECIFICATIONS, CODES AND STANDARDS

A. Codes:

The Building Code, as referenced herein, shall be the Florida Building Code (FBC), asspecified in Section entitled "Reference Standards."

ANSI/NFPA 70 National Electric Code

B. Commercial Standards:

ANSI B16.1 Cast Iron Pipe Flanges and Flanged Fittings, Class25, 125, and 250

ANSI B16.5 Pipe Flanges and Flanged Fittings, Steel NickelAlloy and Other Special Alloys

ANSI/ASME B31.1 Power Piping

ANSI/ASME B73.1M Specifications for Horizontal End SuctionCentrifugal Pumps for Chemical Process

ANSI/ASME B73.2M Specifications for Vertical In-Line CentrifugalPumps for Chemical Process

ANSI/AWWA E101 Deep Well Vertical Turbine Pumps - Line Shaft andSubmersible Types

ANSI/IEEE 112 Test Procedure for Polyphase Induction Motors and



Generators

ANSI/IEEE 115 Test Procedure for Synchronous Machines

ASTM A48 Specification for Gray Iron Castings

ASTM A470 Specification for Vacuum-Treated Carbon and AlloyForgings for Turbine Rotors and Shafts

ASTM A536 Specification for Ductile Iron Castings

ASTM E448 Standard Practice for Scleroscope HardnessTesting of Metallic Materials

ASTM B62 Specification for Composition Bronze or OunceMetal Castings

Hydraulic Institute Standards for Centrifugal, Rotary, andReciprocating Pumps

1.04 CONTRACTOR SUBMITTALS

A. Shop Drawings: Shop drawings of all pumps shall be submitted to the ENGINEER inaccordance with Section 01300, "Drawings and Submittals". Shop drawings shallcontain the following information:

1. Pump name, identification number and specification number.

2. Performance curve and pump data.

3. Pump hydraulic characteristic curves, efficiencies, required NPSH, andhorsepower curves at pump rotative speeds corresponding to the conditionsspecified. For variable speed driven pumps, curves shall be submitted atminimum, intermediate and maximum operating speed as well as for operationwith the variable speed drive bypassed (across the line). The CONTRACTORshall require the manufacturer to indicate points on the H/Q curves, and the limitsrecommended for stable operation between which the pumps may be operatedwithout surge, cavitation and vibration. The stable operating range shall be aswide as possible based on actual hydraulic and mechanical tests.

4. General cutaway sections, materials, dimension of shaft projections, shaft andkeyway dimensions, shaft diameter, dimension between bearings, generaldimensions of pump, suction head bolt orientation, design or baseplate, andanchor bolt locations and forces.

5. Electrical data including control and wiring diagrams.

6. Pump drive and motor data in accordance with Section entitled "Electric Motors".

7. Calculations for L-10 bearing life, shaft size, coupling size and anchor bolt size.

8. Uncrated weight of the pump, weight of heaviest part of pump.

9. Foundry certificates and results of Brinnell hardness testing showing complianceto ASTM A532, ASTM 536 or A48. Each individual casting shall be Brinnell testedin a minimum of two places, in an area of representative casting thickness toASTM Method E-10. Results shall be certified by a registered professionalengineer. Test results shall verify the satisfaction of the required Brinnellhardness of the finished product as specified in respective subsections.

10. Where pump and motor speeds are to be regulated by variable speed drives, the



CONTRACTOR shall coordinate, furnish and exchange all necessaryrequirements with the respective equipment manufacturers to ensure compatibilityand shall submit pump, motor and variable speed drive shop drawings together asa complete system.

B. Certification: The CONTRACTOR shall obtain written certification from the pumpmanufacturer, stating that the equipment will efficiently and thoroughly perform therequired functions in accordance with these Specifications and as indicated on theDrawings, CONTRACTOR shall have unit responsibility for coordination of allequipment, including motors, variable speed drives, controls, and services required forproper installation and operation of the completely assembled and installed pumps. TheCONTRACTOR shall submit all such certificates to the ENGINEER.

C. O & M Manuals: Prior to start-up the CONTRACTOR shall furnish complete operationsand maintenance manuals in accordance with Section 01300, "Submittals."

D. Spare Parts: The CONTRACTOR shall obtain from the pump manufacturer a list ofsuggested spare parts of all items of each pump, motor, and drive, subject to wear, suchas seals, packing, gaskets, nuts, bolts, washers, wear rings, etc., as well as a set ofspare bearings. He shall furnish all these parts suitably packaged and labeled in a boxas described above for tools.

E. Maintenance: Printed instructions relating to proper maintenance, including lubrication,and parts lists indicating the various parts by name, number, and diagram wherenecessary, shall be furnished in duplicate with each unit or set of identical units in eachpumping station. A recommended spare parts list shall be included.

F. Field Procedures: Instructions for field procedures for erection, adjustments, inspection,and testing shall be provided with the shop drawings.


A. Performance Curves: All centrifugal pumps shall have a continuously rising curve. Therated horsepower shall be such that the motors will not be overloaded nor the motornameplate horsepower exceeded at the specified Primary Operating Point

B. Equipment Testing: The CONTRACTOR shall be responsible for the coordination of thefollowing tests of each pump, drive, and motor. Pump tests shall utilize the pumpmanufacturer’s standard test motors.

1. General: Tests shall be performed in accordance with the Standards of theHydraulic Institute, Inc. Tests shall be performed on the actual assembled unitfrom shut-off head condition to 25 percent above the required design capacity.Prototype model tests will not be acceptable. Pump shop tests shall be made bythe manufacturer and certified curves shall be submitted prior to tests. The shoptests shall consist of standard IEEE tests of motors, operation of the pumps andmotors installed on the actual pump and motor bases to be furnished for properbalance of equipment and all other requirements as specified under this section.Pumps motors and drives shall be factory tested, as defined herein. All electronictransducers, meters, gauges, and test instruments shall be calibrated within 30days prior to the scheduled test and certified calibration data shall be provided.Differential pressure type flow meters, such as venturis are preferred and shallhave been calibrated, and its accuracy certified within the past 12 months. In caseof failure of any unit to meet the test requirements, the manufacturer shall makesuch alterations as are necessary, and the tests shall be repeated without



additional cost to the OWNER until the equipment test is passed.

2. Factory Tests of Motors: All motors of sizes 10 horsepower and larger, shall beassembled, tested, and certified at the factory and the working clearanceschecked to insure that all parts are properly fitted. The tests shall be inaccordance with ANSI/IEEE 112 and ANSI/IEEE 115 standards, including heat runand efficiency tests. All computations shall be recorded and 12 certified and datedcopies of the test results shall be furnished to the ENGINEER.

3. Field Tests: All pumping units shall be field tested after installation, in accordancewith the Contract Documents, to demonstrate satisfactory operation, withoutcausing excessive noise, vibration, cavitation, and overheating of the bearings.The field testing shall be performed in the presence of an experienced fieldrepresentative of the manufacturer of each major item of equipment, who shallsupervise the following tasks and shall certify in writing that the equipment andcontrols have been properly installed, aligned, lubricated, adjusted, and readiedfor operation:

a. Start-up, check, and operate the equipment over the entire speed range. Thevibration shall be within the amplitude limits recommended in the HydraulicInstitute Standards and it shall be recorded at a minimum of 4 pumpingconditions defined by the ENGINEER.

b. Pump performance shall be documented by obtaining concurrent readings,showing motor voltage, amperage, pump suction head, and pump dischargehead, for at least 4 pumping conditions at each pump rpm. Each power leadto the motor shall be checked for proper current balance.

c. Bearing temperatures shall be determined by a contact-type thermometer. Arunning time of at least 20 minutes shall be maintained for this test, unlessliquid volume available is insufficient for a complete test.

d. Electrical and instrumentation testing shall conform to applicable sections ofthese Specifications.

e. The field testing shall be witnessed by the OWNER or its representative. Inthe event any of the pumping equipment fails to meet the above testrequirements, it shall be modified and retested in accordance with therequirements of these Specifications. The CONTRACTOR shall then certifyin writing that the equipment has been satisfactorily tested, and that all finaladjustments thereto have been made. Certification shall include date of finalacceptance test, as well as a listing of all persons present during tests, andresulting test data. The costs of all work performed in this Paragraph byfactory-trained representatives shall be borne by the CONTRACTOR.

4. Acceptance: In the event of failure of any pump to meet any of the aboverequirements or efficiencies, the CONTRACTOR shall make all necessarymodifications, repairs, or replacements to conform to the requirements of theContract Documents and the pump shall be re-tested at no additionalcompensation, until found satisfactory.



1.06 MANUFACTURER'S SERVICE REPRESENTATIVE

A. The services of the manufacturer's representative shall be provided for periods stated inthe following schedule:

Schedule 11190-1

Manufacturer's Service Representatives (Working Days)

Installation 2

Start-Up 2

Performance Guarantee Test 1

*During the operation trip the CONTRACTOR, through the manufacturer, shall instructOWNER’s personnel as specified in Section 11000, "Equipment General Provisions"and Division 1.

Any additional time required to achieve successful installation and operation shall be atthe expense of the CONTRACTOR. The manufacturer's representative shall providewritten notification to the ENGINEER on each day he is at the project.

1.07 CLEANUP

A. After completion of the installation and testing, the CONTRACTOR shall remove alldebris from the site, clean all the pumping equipment and controls, and hand over hiswork in perfect operating condition.


A. After completion, the CONTRACTOR shall furnish to the OWNER the manufacturer'swritten guarantees that the pumping equipment will operate with the publishedefficiencies, heads, and flow ranges and meet these specifications. The CONTRACTORshall also furnish the manufacturer's warranties as published in its literature and asspecified.

PART 2 -- PRODUCTS

2.01 GENERAL

A. Wherever it is specified that a single Supplier shall be responsible for the compatible andsuccessful operation of the various components of any pumping equipment, it shall beunderstood to mean that the CONTRACTOR shall furnish and install only such pumpingequipment as the designated single Supplier will certify is suitable for use with itsequipment and with the further understanding that this in no way constitutes a waiver ofany specified requirements.

B. All manufactured items provided under this Section shall be new, of currentmanufacture, and shall be the products of reputable manufacturers specializing in themanufacture of such products; such manufacturers shall have had previous experiencein such manufacture and the CONTRACTOR shall, upon request of the ENGINEER,furnish the names of not less than five (5) successful installations of the manufacturer'sequipment of comparable nature to that offered under this contract.



C. All combinations of manufactured equipment which are provided under theseSpecifications shall be entirely compatible, and the CONTRACTOR shall be responsiblefor the compatible and successful operation of the various components of the unitsconforming to specified requirements. Each unit of pumping equipment shall incorporateall basic mechanisms, coupling, electric motor or engine drive and unit mounting. Allnecessary mountings and appurtenances shall be included.

D. Where two or more units of the same type and/or size of pumping equipment arerequired, such units shall all be produced by the same manufacturer.

2.02 MATERIALS

A. All materials employed in the pumping equipment shall be suitable for the intendedapplication; material not specifically called for shall be high-grade, standard commercialquality, free from all defects and imperfection that might affect the serviceability of theproduct for the purpose for which it is intended, and shall conform to the followingrequirements unless otherwise specified in individual pumping equipment specifications:

1. Cast iron pump casings and bowls shall be of close-grained gray cast iron,conforming to ASTM A48, or equal.

2. Bronze pump impellers shall conform to ASTM B584.

3. Stainless steel pump shafts shall be of Type 400, Series. Miscellaneous stainlesssteel parts shall be of Type 304 except in septic environment where they shall beType 316.

4. All anchor bolts, nuts and washers shall be type 316 stainless steel, unlessotherwise specified in individual pumping equipment specifications.

2.03 PUMP APPURTENANCES

A. Nameplates: Each pump shall be equipped with a stainless steel nameplate indicatingrated head and flow, pump size and type, impeller size, pump speed, and manufacturer'sname and model and serial number.

B. Pressure Gages: All pumps (except sump pumps) shall be equipped with pressuregages installed on the discharge lines. Pressure gages shall be located in arepresentative location, where not subject to shock or vibrations, in order to achieve trueand accurate readings.

PART 3 -- EXECUTION

3.01 INSTALLATION

A. General: Pumping equipment shall be installed in accordance with the manufacturer'srecommendations, acceptable procedures submitted with the shop drawings and asindicated on the Drawings, unless otherwise accepted by the ENGINEER.

B. Alignment: Equipment shall be field tested to verify proper alignment, operation asspecified, and freedom from binding, scraping, vibration, shaft run-out, or other defects.Pump drive shafts shall be measured just prior to assembly to ensure correct alignmentwithout forcing. Equipment shall be secure in position and neat in appearance.

Pumping equipment shall be installed and adjusted in such a manner that connectingpiping does not impose any strain whatsoever on any pump. Pumps shall be set so thatconnecting flanges, screwed and flexible connections meet without strain or distortion.



C. Lubricants: The installation work shall include furnishing the necessary oil and greasefor initial operation.

D. Connections: All motors shall be connected to the conduit system by means of a shortsection (18 inch minimum) of weatherproof flexible conduit, unless otherwise indicated.For connections for No. 6 AWG and smaller wire size, the CONTRACTOR shall furnishflexible conduit with an acceptable grounding conductor inside the flexible section. Forconnections of No. 4 AWG or larger wire size, the CONTRACTOR shall install agrounding conduction in the conduit and terminate at the motor control center with anacceptable grounding clamp.


A. All exposed materials, except corrosion-resistant metals which have not been shoppainted, shall be field coated as specified in Section 09900, "Painting". Shop painteditems which suffered damage to the shop coating shall be touched up as specified inSection 09900 entitled "Painting."

B. Gears, bearing surfaces, and other similar surfaces obviously not to be painted shall begiven a heavy shop coat of grease or other suitable rust-resistant coating. This coatingshall be maintained as necessary to prevent corrosion during periods of storage anderection and shall be satisfactory to the ENGINEER up to the time of the finalacceptance.

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ORLANDO:45530-003 S11185 SEMINOLE COUNTY YANKEE LAKE WRF R&R

11185-1 POSITIVE DISPLACEMENT BLOWER PACKAGES

SECTION 11185 - POSITIVE DISPLACEMENT BLOWER PACKAGES PART 1 -- GENERAL 1.01 THE REQUIREMENT

A. The CONTRACTOR shall furnish, install, test, adjust, and place in satisfactory operation two (2) heavy duty positive displacement (PD) blower systems complete with all accessories including motors, steel bases, inlet filters, inlet silencers, discharge silencers, relief valves, check valves, discharge isolation valves, weighted pressure relief valves, pressure gauges, flexible connectors, V-belt drive, guards, vibration isolation, acoustical enclosures and other components required for a complete and operable blower system as shown on the Drawings and as specified herein.

B. Equipment and manufacturer’s services shall be provided in accordance with the requirements of Section 11000 – Equipment General Provisions.

C. The blowers specified herein shall be suitable for variable speed operation. Variable

Frequency Drives (VFDs) shall be provided by the Electrical Subcontractor in accordance with requirements of Section 16370 – Variable Frequency Drives. The CONTRACTOR shall coordinate with the Blower Manufacturer and Electrical Subcontractor to ensure that the supplied VFDs are compatible with the blowers specified in this section. The CONTRACTOR shall be responsible for all modifications necessary to ensure a complete and fully operational blower system at no additional expense to the OWNER.

D. The two blower packages furnished under this system will be installed on a common air

header that currently serves two multistage centrifugal blowers. The PD blower packages will not be operated in parallel with the existing multistage blowers.

1.02 WARRANTY AND GUARANTEE

The blower supplier shall furnish a minimum of a two (2) year warranty to assure that any equipment specified herein which does not meet the performance requirements for the specifications, is repaired to the OWNER’s satisfaction or replaced with equipment that does meet the performance requirements of the specification and be in accordance with Specification Section 01300 Part 1.07.

1.03 SUBMITTALS

A. In addition to the submittal requirements specified in Section 01300 - Submittals and Section 11000 - Equipment General Provisions, submit the following:

1. Complete shop drawings and operation and maintenance manuals. 2. Support locations and loads that will be transmitted to bases and foundations.

Weights of all system components and the total weight of the operating blowers.



3. Complete electrical field termination drawings. 4. Electrical equipment product data sheets. 5. Overall equipment layout and piping interconnection drawings. 6. Copies of certified shop test reports.

7. Field test results. 8. The blower capacity (in icfm and scfm) based on corrections made for the worst

case site conditions. 1.03 OPERATION AND MAINTENANCE MANUALS

A. Furnish Operation and Maintenance manuals, shop drawings and other material required as specified in Section 01300 and Section 11000.

B. The CONTRACTOR shall submit a complete list of additional spare parts beyond those

specified herein, which the manufacturer recommends to be kept on hand and as specified in Section 11000.

1.04 CONTRACTOR'S RESPONSIBILITY

A. The CONTRACTOR through the manufacturer shall provide the services of qualified service persons with at least five (5) years of experience who are regularly involved in the inspection, installation, start-up, troubleshooting, testing, maintenance, and operation of positive displacement blower systems. The service persons shall:

1. Witness and check installation.

2. Assist the CONTRACTOR in conducting field tests and preparing a written report as specified below.

3. Witness and check start-up of the system.

4. Assist the CONTRACTOR in making adjustments and modifications as necessary to optimize operation of system components.

5. Troubleshoot and correct any mechanical or control problems that are noted during tests and start-up.

6. Submit written certification that the systems have been properly installed, tested, and adjusted; and that all controls and protective devices operate properly, including date of final acceptance test, as well as a listing of all persons present during the tests.

7. Investigate and supervise correction of any operating problems that may arise up

to the end of the guarantee period of the equipment.



8. Instruct OWNER personnel in the operation and maintenance of the equipment.

B. The services of a qualified manufacturer's technical representative shall be provided at no additional cost to the OWNER for a period of not less than two (2) days for each blower application, for a total of six (6) days as follows:

1. At least one trip of three (3) days during installation of the equipment.

2. At least one trip of three (3) days after acceptance of the equipment for start-up

purposes. C. Any additional time required to achieve successful installation and operation shall be at

the expense of the CONTRACTOR. PART 2 -- PRODUCTS 2.01 ACCEPTABLE MANUFACTURERS

A. Blower packages shall be Aerzen Model GM 90S, Kaeser Model HB950C, Robuschi Model ES 125/4, or Universal Blower Pac Model ATTENU-PAC 150HP.

2.02 PERFORMANCE REQUIREMENTS

A. Operating conditions and performance requirements are provided in the table below. The blowers shall be capable of providing the specified blower capacity at the design discharge pressure at the package discharge flange at the design temperature, relative humidity, inlet pressure and barometric pressure specified below. The discharge pressure specified below is the required pressure at the blower package discharge flange. The blower package manufacturer shall account for all inlet losses (inlet filter, inlet piping, silencer, etc.) and all discharge losses (silencer, check valve, etc.) within the blower package in determining the total differential pressure to be provided by the blower.

Process Air Blowers

Number of Units 2

Blower Identification Number 50-B-1

50-B-2

Site / Operating Conditions

Elevation, feet above MSL 40

Barometric Pressure, psia 14.7

Maximum Temperature, °F 105

Minimum Temperature, °F 35

Maximum Relative Humidity, % 100

Performance Requirements at Design Point



Design Temperature 95

Design Relative Humidity, % 45

Design Minimum Inlet Pressure, psia 14.5

Blower Capacity, scfm 2,300

Blower Capacity, icfm 2,490

Discharge Pressure at Package Discharge Flange, psig 8.5

Maximum Power Draw/Blower at Blower Shaft, bhp 135

Maximum Blower Speed at Design , rpm 3,000

Minimum Blower Capacity, icfm 1450

Minimum Blower Pressure Capability, psi 12

Acoustic Enclosure Type Close Fitting

Sound level 3’ from enclosure in free field conditions, dBA 80

B. Blower package manufacturer shall select motor size to address worst case site operation

conditions. The electrical system design is based on furnishing 150 hp blower motors. The CONTRACTOR shall be responsible for all modifications necessary to accommodate larger motors at no additional expense to the OWNER.

2.03 BLOWER CONSTRUCTION

A. A welded steel fabricated base or combination base frame and discharge silencer shall be provided for mounting the blower, electric drive and driver base. The base shall be of a rigid box section shape. The box section shall be properly stiffened and present large bearing areas for carrying the load on the foundation. The base shall be rigid to prevent deflection during start-up and normal operation that would affect alignment. Resilient isolation pads shall be provided between the concrete mounting or bottom of the blower enclosure and the base of the blower unit. Positioning pins and jackbolts shall be provided to facilitate motor alignment when motor is coupled directly to blower. The base shall support the blower and a pivoting motor base. The motor shall be mounted on the pivoting base. The weight of the motor, in conjunction with (2) springs (if needed) shall provide belt tension for the V-belt drive assembly. Installation shall conform to recommendations of the blower and V-belt component manufacturers including motor, V-belt drive, guard, controls, and all necessary items. V-belts shall be of the stretch resistant type with an adjustable belt tensioning mechanism.

B. The blower casing shall be of one piece with separate headplates, and shall be made of

close-grained cast iron suitably ribbed to prevent distortion under the specified operating conditions. Inlet and outlet shall be flanged connections. The casing shall incorporate a proven means of pulsation cancellation such that the sound pressure level measured 3 feet from the front and side panels of the blower package does not exceed the value specified in Paragraph 2.02. The vibration level as measured at the blower casing, in the X/Y planes of the bearings, shall not exceed 0.55-inch/sec RMS when operating at the specified maximum operating pressure and speed in the actual blower package.

C. Each lobe shall be made from a ductile iron casting. Shafts shall be alloy steel forgings.

Alternatively the lobe and shaft shall be of one piece construction that is machined



together or as a single drop forged piece of AISI 1043. The lobes shall be of the straight, tri-lobe involute type and shall operate without rubber or liquid seals or lubrication and shall be positively timed by a pair of accurately machine heat-treated alloy steel, helical tooth or straight cut timing gears. The timing gears shall be mounted on the lobe shafts with a press fit and keyed or mounted by hydraulic expansion onto the blower shafts with a tapered interference fit. One gear shall be equipped with a hub and a gear to facilitate accurate and easy timing. Each lobe/shaft shall be supported by anti-friction bearings sized for a minimum of 100,000 hours B-10 life.

D. The lube oil system shall be supplied with a sight glass and ample oil reservoir capacity.

Piston ring oil seal shall be provided at each bearing, designed to prevent lubricant from leaking into the air stream. Rotary piston ring shaft seals shall be provided at the point where the shaft passes through the head plate (air seal). A total of 16 piston ring seals shall be provided for each blower. Further provision shall be made to vent lubricant to the impeller side of the oil seal to atmosphere to eliminate any possible carryover of lubricant into the air stream. Lip seals inside the blower shall not be acceptable. Lip seal is allowed at the drive shaft only, complete with wear sleeve.

E. The timing gears and the bearings shall be splash oil lubricated from oil slingers mounted

on the driven shaft and dipping in oil. Grease lubricated bearings shall not be acceptable. Each bearing shall be equipped with an oil deflector disc if necessary to further reduce oil leaks

F. Blower package shall be designed to allow ease of access to oil drain plugs.

2.04 BLOWER ACCESSORES A. Each blower shall be supplied with one combination inlet filter silencer. The inlet filter

silencer shall be mounted directly to the inlet flange of the blower. Filter element shall be washable by maintenance personnel as a preventative maintenance procedure.

B. If a combination inlet filter silencer is not proposed by the manufacturer, then each blower

may be supplied with one inlet silencer and one inlet filter. The inlet silencer shall be a combination chamber and absorptive design for maximum sound attenuation. Inlet silencer performance losses shall be included by the blower vendor in the blower performance calculation.

C. Each blower shall be supplied with one combination base frame and discharge silencer or

separate structural steel base and conventional discharge silencer. The silencer shall feature a single or double shell of pressure vessel quality steel with continuous welds. The temperature rating shall be 300°F. The design of the silencer must accommodate being bolted directly to the blower discharge flange with no intermediary pieces, and shall be designed to assure that there will be no disturbing pipe beating noise or pipe harmonics whether one blower or multiple blowers are running. The discharge silencer and acoustic enclosure shall be designed to reduce the sound pressure level emitted by the blower package such that it does not exceed the value specified in Paragraph 2.02 over the entire range of operation measured 3 feet from the front, back and at two locations opposite each side panel in free field conditions. The blower manufacturer shall supply a stainless steel grounding lug fully welded to the base or shall ground the base to the sound



enclosure through a ground wire. D. Each blower package shall include flexible connector(s) which connect to the plant piping.

Flexible connector(s) will be located downstream of the discharge silencer. The flexible connectors shall be suitable for the maximum operating temperature and pressure ratings of the equipment in the air stream.

E. Each blower shall be supplied with a V-belt drive and belt guard that shall be of the high capacity type, oil and heat resistant. Drive shall be designed for a minimum service factor of 1.4 times the maximum blower horsepower. Belt tensioning shall be easily adjustable for maintaining proper tension. Sheaves shall be dynamically balanced regardless of the operating speed.

F. Each blower shall be supplied with vibration isolating mounts. Blower manufacturer shall be responsible for attenuating noise and vibration in the blower package.

G. Each blower shall be supplied with a single or dual pressure relief valve/s on the discharge

side of the blower mounted downstream of the discharge silencer and upstream of the check valve. The relief valve/s shall be set to protect the blower from exceeding its maximum pressure rating. The materials selected for the valve internals shall enable safe and reliable operation at the site conditions. The valve/s shall be sized to pass 110% of the design flow. The valve shall be field adjustable, spring loaded type and have a proportional operating characteristic with respect to the pressure set point. Initial setting of the relief valve shall be as required by the manufacturer to protect the blower from exceeding its maximum rated pressure capacity.

H. Check valves shall be provided on the discharge of each blower unit within the acoustic enclosure. Check valve shall be ductile iron with 316 SST shaft, plate, and springs, and EPDM sealing member suitable for 300°F or shall be of the full-bore low pressure drop, flapper type design with an aluminum or steel body and steel flap embedded in EPDM with full contact seal all suitable for 300°F.

I. Butterfly valves shall be provided on the discharge of each blower outside of the acoustic enclosure as shown on the Drawings. Butterfly valve shall be handwheel operated and all components of the valve shall be suitable for temperatures as high as 300°F. Butterfly valve may be wafer style or flanged.

J. In addition to the single or dual pressure relief valve/s provided in Part 2.04.G, provide

weighted pressure relief valves shall be provided on the discharge of each blower outside of the acoustic enclosure as shown on the Drawings. Relief valve shall be set to discharge pressure in excess of the setpoint to protect the blower system in the event that the positive displacement and multistage blowers are operating concurrently. The materials selected for the valve internals shall enable safe and reliable operation at the site conditions. The single valve shall be sized to pass 110% of the design flow. The valve shall be field adjustable, weighted type and have a proportional operating characteristic with respect to the pressure set point. Initial setting of the relief valve shall be 9.5 psig.

K. Provide a liquid-filled pressure gauge for each blower discharge and suction equal to Type 1009, Grade 1A (1.0% F.S.) as manufactured by Ashcroft or equal.



1. Range: 0 to 15 psig (discharge); 0 to 10 inches water gauge (suction). 2. Accuracy: ±1% of full scale. 3. Dial: 4-1/2” diameter; 270° scale; heavy gauge aluminum with white background

and black markings; 0.25 psig/0.20 inches WC minor divisions. 4. Case: Stainless steel. 5. Bourdon Tube and Socket: 316 Stainless Steel 6. Connection: ¼” NPT. 7. ¼” stainless steel pressure snubber. 8. Pressure gauges shall be mounted to the sound enclosure wall.

L. Provide a liquid filled bimetal thermometer for each blower discharge as manufactured by Ashcroft or equal.

1. Range: 50 to 300°F Series EL discharge and - 40 to 160°F inlet. 2. Accuracy: ±2% full span. 3. Dial: 3” or 4” diameter; 270° scale; heavy gauge stainless steel with white

background and black markings; 5°F minor divisions. 4. Case: Stainless steel. 5. Ring: Stainless steel. 6. Movement: Stainless steel. 7. Actuating Element: Type 304 stainless steel, precision rolled, fully annealed tubing. 8. Compensation: Bimetal compensator to offset ambient temperature changes in

case area. 9. Temperature gauge shall be mounted to the sound enclosure wall.

M. A high temperature switch shall be provided for each blower as manufactured by Ashcroft

or equal with an opening range of 150° to 270°F. The maximum temperature capability shall be 400°F. Sensor is to be capillary type with remote 3-3/4” brass bulb. CONTRACTOR shall provide 1/2” FPT in discharge piping near blower for thermostat well. Piping under 4 inches will require a tee with bushings to mount the well. Piping 4 inches and over may be drilled and tapped. The temperature switch shall be provided by the blower manufacturer to be installed on the discharge piping by CONTRACTOR. Alternatively the Blower Manufacturer may provide a panel-mounted Discharge Temperature Switch/Gauge connected to the discharge port of the blower. The Discharge



Temperature Switch/Gauge shall be wired to the Terminal Box.

N. A high pressure switch shall be provided for each blower as manufactured by Ashcroft, Type 400 in NEMA 4X enclosure, B4 Series or equal. The pressure switch operating range shall be from 1 to 15 psig. The actuator seal shall be Viton. Pressure switches shall have adjustable deadband, hermetically sealed switching element and 316 stainless steel pressure port. The pressure switch shall be provided by the blower manufacturer to be installed on the discharge piping by CONTRACTOR.

O. A filter maintenance indicator gauge shall be provided for each blower. The indicator gauge shall be differential pressure gauge Type Magnehelic Series 2000 as manufactured by Dwyer or equal. The filter maintenance indicator gauge shall be mounted to the sound enclosure wall.

P. Each blower shall receive its initial oil filling at the factory. Oil requirements shall be such that the oil shall be available from a local source.

2.05 BLOWER MOTORS

A. The blower manufacturer shall be responsible for furnishing a 150 horsepower electric

motor for each process air blower. The process air blower motor shall be inverter duty. The manufacturer shall be responsible for the proper selection, testing, installation, and operation of the motors and for coordinating the motors with the blower equipment. Motors shall be new and both materials and workmanship shall be of the very best quality. Motors shall be XE Premium Efficiency Motors, as manufactured by Reliance; W22 as manufactured by WEG, or equal. The manufacturer shall ensure that the blowers supplied are compatible with VFD operation to throttle the two new positive displacement blower packages specified in this section. VFDs will be provided by the CONTRACTOR as specified in Section 16370.

B. Motors shall be horizontal squirrel cage induction motors designed in accordance with the

latest ANSI, NEMA, and IEEE standards. Motors shall be 480 volts, 3-phase, 60 Hz. Motors shall be designed and manufactured for continuous duty for operation under the following conditions: 1. Elevation of 100 feet above mean sea level. 2. Ambient temperature ranging 0 degrees F to 105 degrees F. 3. Voltage variations of ±10 percent. 4. Frequency variation of ±5 percent. 5. Combined voltage and frequency variation of ±10 percent with frequency variation

not exceeding ±5 percent. C. Inverter duty motors shall have a service factor of 1.0 and non-inverter duty motors shall

have a service factor of 1.15. Motor horsepower shall be equal to or greater than the load over the full range of operating conditions. Motor speed shall not exceed 1,800 rpm.



D. Motor torque characteristics shall be at least 20 percent greater than the maximum full

load torque requirements over the full range of operating conditions from start-up to full load.

E. Motor enclosure shall be TEFC corrosion protected. Motor shall be designed for quiet

operation. Motor sound pressure shall not exceed 77 dBA at 3 feet from the motor.

F. Motors shall provide premium efficiencies and power factors throughout their operating range. The power factors specified shall be achieved without the use of power factor correction capacitors. Motors shall provide minimum efficiencies and power factors as follows:

Full Load Minimum Efficiency

Minimum Power Factor

100% 95.6% 85% 75% 95.6% 82% 50% 93.1% 74%

G. Efficiencies and power factors for each motor shall be verified by shop testing as specified. H. Motor winding insulation shall be Class F for non-inverter duty motors or Class H for

inverter duty motors. However, temperature rise shall be limited to that of Class B insulation. Manufacturer's premium grade insulation shall be used.

I. The stator shall be assembled from high grade electrical sheet steel laminations

adequately secured together. Stator windings and end turn connections shall be fully braced to withstand all mechanical, electrical, and thermal stresses. The shaft shall be made of high grade machine steel or steel forging and of size and design adequate to withstand the load stresses. The rotor shall be fabricated of high grade electrical sheet steel laminations, or die cast aluminum, adequately fastened together and to the shaft.

J. Bearings shall be grease lube ball bearings. Split bearing housings shall be used such

that bearings can be inspected or replaced without disturbing alignment. K. Motor leads shall be suitably marked and identified. Each motor shall be provided with an

oversized terminal box with space for connections and shall be constructed of cast iron or fabricated steel, neoprene gasketed and bolted.

L. Motors shall be designed and manufactured for operation in the direction required for the

blowers. The phase sequence shall be marked permanently and plainly inside the stator lead junction box.

M. Motors shall have breather and drain plugs to allow for drainage of any moisture from

inside. N. Each motor shall be provided with a normally closed motor winding temperature switches

or PTC thermistor (minimum of 2 per phase). O. Motors shall be supplied with space heaters for 120V operation.



P. Motors shall comply with Section 16150, except where modified herein.

2.06 ACOUSTICAL ENCLOSURE (CLOSE-FITTING TYPE) A. Each blower shall be supplied with a sound enclosure designed for outdoor installation

covering the entire blower package including the drive motor, the inlet silencer, and the discharge silencer. The sound enclosure must be designed for easy inspection and maintenance of all blower package components.

1. Panels shall be made of steel sheet, externally coated with a premium coating

system. Sound enclosure acoustic material as a minimum shall comply with UL 94 or UL 723 for fire-retardant, self-extinguishing, non-dripping materials. Materials with a lesser rating shall not be acceptable.

2. A grounding strap shall be installed between the blower base and the package skid

to bypass any vibration isolating mounts. 3. Quick release panels, each less than 50 lb shall provide easy and quick access for

routine maintenance of the blower and the package components. For panels heavier than 50 lbs, hinged doors shall be supplied, with the appropriate frame, reinforcements and supporting elements.

4. A high efficiency auxiliary electric motor driven ventilation fan shall provide

ventilation and cooling integral to the sound enclosure and shall operate whenever the blower is operating. The fan shall operate independently of the rotation speed of the compressor and continue to run for 15 minutes after the blower has shut down. The CONTRACTOR shall coordinate with the electrical subcontractor for the required interlock between the 110V cooling fan and the 480 volt starter for the blower. The fan shall be capable of limiting the temperature within the acoustical enclosure to 125°F with an outside temperature of 105°F. Cooling fan shall be sized for sufficient heat removal from the sound enclosure.

5. All enclosure fasteners shall be galvanized. Anchor bolts shall be Type 316 stainless steel. Anchor bolts shall be designed by the manufacturer.

2.07 SPARE PARTS

A. Furnish all special tools and appliances necessary to disassemble, service, repair and

adjust the equipment and appurtenances. B. Spare parts which are identical and interchangeable with the original parts shall be

furnished in clearly identifiable and labeled containers. The CONTRACTOR shall provide the following spare parts:

Two (2) filter elements per blower

One (1) year supply of manufacturers recommended oil, per blower

One set of V-belts per blower

One shaft seal and shaft sleeve per blower



One high temperature sensor per blower

One set of enclosure hardware (nuts, bolts, washers) if hardware is galvanized

PART 3 -- EXECUTION 3.01 SHOP TESTING

A. Shop testing shall be in accordance with Section 11000, Equipment General Provisions and with the following additional requirements:

B. A detailed shop test plan shall be submitted with the Shop Drawings. The shop test plan

shall fully describe the manufacturer's test facilities and the test procedure to be used.

C. After assembly, each blower system shall be factory lubricated, aligned and operationally tested. Run time on each blower shall be at least one (1) hour after which each blower shall be rechecked for alignment and tension of V-belts and adjusted if necessary. If adjustments are made, the blower(s) shall be restarted and run an additional 15 minutes, shut down and rechecked again.

D. Each blower system shall be provided with a bench test complying with ISO 1217 to

demonstrate compliance with all specified performance requirements.

E. A report on each blower system shall be furnished with the O&M manuals giving as a minimum the following readings taken during shop tests at or near the end of the one hour run time. 1. Motor current, per phase. 2. Applied motor voltage, phase-to-phase 3. Discharge pressure, psi 4. Air Flow, scfm 5. Air Flow, icfm 6. Blower discharge air temperature 7. Vibration levels in inch/second of blower housing in horizontal, vertical and axial

direction. 8. Inlet air temperature 9. Barometer, psia 10. Relative humidity, %



11. Speed 12. Sound pressure level in dbA measured at 3 ft. from the blower system in six

locations: one on each short side of the blower, and two on each long side of the blower. A comparison shall be made of tested performance to specified performance including calculations of variance from specified requirements.

F. Performance tests shall be conducted at the specified blower speed. Tolerances

allowable in testing shall be as approved by the ENGINEER.

G. A comparison shall be made of tested performance to specified performance including calculation of variance from specified requirements.

H. In case of failure of any unit to meet the test requirements, the manufacturer, at his own

expense, shall make such alterations as are necessary and the tests shall be repeated without additional cost to OWNER until the equipment is satisfactory.

I. Complete instrumentation layout and manufacturer's information for all instrumentation used

during testing shall be submitted including the arrangement and device for flow measurement, conversion tables/graphs, and accuracies over the specified flow range. All instruments and measuring devices that the manufacturer proposes to use for shop performance testing shall be calibrated by a laboratory not more than twelve months prior to the first performance test.

J. The blower manufacturer shall prepare and submit test results, performance curves, and

all calculations with a statement certifying that shop tests were successfully conducted in accordance with the test requirements and that all specified performance conditions were demonstrated for each blower system.

3.02 INSTALLATION AND FIELD TESTING

A. The equipment shall be installed in accordance with the instructions and drawings of the manufacturer and Section 11000 - Equipment General Provisions.

B. The CONTRACTOR shall furnish and install the blower packages and all related items in

strict accordance with manufacturer's instructions including proper support and anchoring of the blowers. All supports, fasteners, anchors, equipment, hardware, etc. shall be furnished for a complete installation.

C. Prior to field testing of blower equipment, the CONTRACTOR shall take all necessary

precautions to insure that the air piping is completely clean and free of any debris, dirt, or other foreign materials which could clog the aeration equipment or interfere with acceptable operation.

D. After each blower unit and its accessories have been completely installed and the

electrical connections have been made, it shall be subjected to field tests conducted by the CONTRACTOR and witnessed by the ENGINEER to determine if it is free from all objectionable vibration, bearing heating, noise, or other defects. Vibration shall not exceed 0.55 in/sec at any bearing in any plane. Sound pressure level shall be measured



along each side of the enclosure to verify conformance to the requirements specified herein. Each blower unit shall be subjected to running tests under actual operating conditions for a period of 12 hours during the field test. The CONTRACTOR shall make such changes of alterations in the blower units or their auxiliaries necessary for satisfactory operation as directed by the ENGINEER based on the results of the field tests.

3.03 PAINTING

A. Painting shall be as specified in Section 09900 unless otherwise specified herein. Blowers shall be coated with the manufacturer’s recommended premium paint system suitable for the blowers’ intended use.

B. All inaccessible surfaces of the equipment, which normally require painting, shall be finished painted by the manufacturer. The equipment and motor shall be painted with a high quality epoxy polyamide semi-gloss coating specifically resistant to chemical, solvent, moisture, and acid environmental conditions, unless otherwise specified.

C. Gears, bearing surfaces, and other unpainted surfaces shall be protected prior to shipment

by a heavy covering of rust-preventive compound sprayed or hand applied which shall be maintained until the equipment is placed in operation. This coating shall be easily removable by a solvent.

3.04 EQUIPMENT IDENTIFICATION

A. The blowers shall be provided with a substantial brass or stainless steel nameplate, securely fastened in a conspicuous place, and clearly inscribed with the manufacturer’s name, year of manufacture, serial number, design air flow in scfm and icfm, discharge pressure and rpm.

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Orlando:45530-003 S11192 SEMINOLE COUNTYYANKEE LAKE WRF R&R

11192-1 DRY PIT SUBMERSIBLE PUMPS

SECTION 11192 - VERTICAL, DRY-PIT SUBMERSIBLE NON-CLOG PUMPS

PART 1 -- GENERAL


A. The CONTRACTOR shall install all supplies, materials, equipment and labor necessary forthe furnishing, installing, field testing, and placing into operation of the pumps and pumpingappurtenances, complete and operable, all in accordance with the requirements of theContract Documents.

B. The CONTRACTOR shall furnish three (3) vertical, dry-pit submersible non-clog sewagepumps as specified herein to pump return activated sludge.

C. Rotation assemblies for all centrifugal pumps shall be statically and dynamically balanced inaccordance with applicable provisions of the Hydraulic Institute Standards.

D. The pumps shall be capable of operating in a continuous non submerged condition in avertical position in a dry pit installation while permanently connected to inlet and outlet pipes.The pumps shall be of submersible construction and shall continue to operate satisfactorilyshould the pumping station be subjected to flooding.

1.02 SUBMITTALS

A. The CONTRACTOR shall submit shop drawings, technical materials and performance data,including manufacturer's brochures, catalog cuts, and performance affidavit for each item ofthe system to the ENGINEER for review.

B. Submit a detailed shop drawing of the pump, motor and power cable.

C. Submit Operation and Maintenance Manuals specific for the pumps supplied based on theapproved shop drawings that completely detail the recommended storage and handling,installation, start-up, operation, maintenance, and trouble-shooting, including detailedexploded views for all components.

D. Submit certified pump curves after fabrication of the units.

E. Submit manufacturer’s 2-year warranty for the pumps.

F. Submit electrical drawings. Show wiring, controls, interlocks, terminals, and disconnects.Label each terminal, showing which control or electrical power wire connects to eachterminal.

G. Submit control panels, including, but not limited to cabinet assembly and layout drawings toscale. These shall include both front and rear layouts, fabrication specifications, panel wiringdiagrams showing all power connections, combined panel power draw requirements,breaker sizes, fuse sizes and grounding. This wiring diagram shall be in ladder logic formatand shall reference the appropriate loop drawing for continuations or details where required.



1.03 OWNER APPROVED MANUFACTURER

A. Each pump shall be a vertical submersible, non-clog, centrifugal pump, Flygt. No othermanufacturer will be accepted.

1.04 MANUFACTURER'S EXPERIENCE

A. Manufacturers shall have experience in the manufacture of this type and size of equipmentfor a minimum of 5 years.


A. The pump supplier shall provide the services of a qualified manufacturer's technicalrepresentative who shall supervise the installation and testing of all equipment furnishedunder this Contract and instruct the CONTRACTOR's personnel and the OWNER'spersonnel in its maintenance and operation. The services of the manufacturer's technicalrepresentative shall be provided for periods stated in the following schedule:

INSTALLATIONTRIP (DAYS)

OPERATION*TRIP (DAYS)

GUARANTEE PERIODTRIP (DAYS)

2 2 1

* During operation trip, the manufacturer shall instruct OWNER's personnel.

The manufacturer's technical representative shall adhere to all OWNER security proceduresfor access to the site including security background checks.


A. The materials covered by these Specifications are intended to be standard equipment ofproven reliability. It shall be the responsibility of the pump supplier to demonstrate that theequipment meets the specified performance requirements and meets all quality assurancerequirements.

B. The equipment furnished shall be designed and fabricated in accordance with the bestpractices and methods and shall operate satisfactorily when installed per the pumpmanufacturer's recommendations.

C. All material shall be new and both workmanship and materials shall be of the very bestquality, totally suitable for use in pumping return activated sludge under the serviceconditions indicated.

D. All components of the pumping system shall have been used successfully by themanufacturer on previous installations.

E. All materials used in fabricating the equipment shall be new and undamaged. All materialsshall conform to applicable provision of the AISC Specifications for the design and



fabrication of structural steel, AWS Welding Specifications and to pertinent ASTM StandardSpecifications.


A. The pump supplier shall furnish a minimum of a two (2) year warranty to assure that anyequipment specified herein which does not meet the performance requirements for thespecifications, is repaired to the OWNER’s satisfaction or replaced with equipment that doesmeet the performance requirements of the specification and be in accordance withSpecification Section 01300 Part 1.07.

PART 2 -- PRODUCTS

2.01 MATERIALS

A. The pumps, electric motors and couplings shall be the standard product of a manufacturerwhich has produced and sold such pumps, couplings and motors for a period of at least five(5) years for similar service.

B. Each pump shall meet the operating requirements outlined below. The motor at thenameplate rating specified shall not overload anywhere along the entire characteristic curveof the impeller. The pump design shall be such that the impeller is attached directly to themotor shaft.

C. Vibration shall not exceed 0.2 inches per second, velocity as measured by the Standards ofthe Hydraulic Institute. Pump structure shall have a first natural frequency at least twice theshaft maximum rotative speed.

D. The pump and all related equipment shall be designed for the wastewater applicationspecified herein and for the allotted space shown on the drawings. The pumps shall besuitable for continuous or intermittent operation. The pump shall be bottom suction, sidedischarge construction and shall be supplied with a suction connection elbow.

E. The lifting cover, stator housing, and volute casing shall be close grained cast ironconforming to ASTM A48-Class 30, 35, or 40. Ductile iron pump volute shall be furnished ifrecommended by pump manufacturer for specified pressure rating. All exposed nuts, bolts,washers, lifting handle, and other fastening devices shall be AISI type 316 stainless steel.

F. Casing shall be a smooth surface devoid of blowholes, pits, burrs, or other irregularities.The casing shall have a suction cover, which can be easily removed for easy access to theimpeller. All non-stainless steel metal surfaces exposed to the atmosphere shall beprotected by a factory applied spray coating of pump manufacturer’s modified acrylic primerand finish. The volute shall be single piece, non-concentric design and shall have smoothfluid passages large enough at all points to pass any size solids which can pass through theimpeller. Pump volute shall be provided with a cleanout port to allow for removal of anyforeign material blocking or impeding performance of the pump.

G. All mating surfaces where watertight sealing is required shall be machined and fitted withnitrile or Viton rubber O-rings. Fittings shall be such that sealing is accomplished by



metal-to-metal contact between machined surfaces. This will result in controlledcompression of the O-rings without the requirement of a specific torque limit. Secondarysealing compounds, rectangular gaskets, elliptical O-rings, grease or other devices shall notbe acceptable.

H. The impeller shall be Hard-Iron™ conforming to ASTM A-532 (Alloy III A) 25% chrome castiron. Impellers shall be dynamically balanced, closed non-clogging design with multiplevanes. The impeller shall be capable of handling solids, fibrous materials, heavy sludge,and other matter found in normal wastewater applications. The impeller shall bemechanically secured to the motor shaft per manufacturer’s recommendations utilizingmachined stainless steel components. Adhesive or friction-type fits are not acceptable.Impeller shall be coated with the same system applied to the interior of the casing.

I. Shafting shall be constructed of AISI 329 stainless steel or 400 Series stainless steel for thepump and motor, sufficiently large in diameter to transmit safely the maximum torquedeveloped by the drive unit and of such a design as to provide a rigid support for the impellerand to prevent excessive vibration. The shaft shall be suitably heat-treated, turned, ground,and polished over its entire length.

J. Shaft Seals

1. Each pump shall be provided with a tandem mechanical shaft seal system consistingof two totally independent seal assemblies of high-pressure design. The seals shalloperate in a lubricant reservoir that hydrodynamically lubricates the lapped sealfaces at a constant rate. The lubricant chamber shall be designed to preventoverfilling and to provide lubricant expansion capacity. The drain and inspectionplug, with positive anti-leak seal shall be easily accessible from the outside. The sealsystem shall not rely upon the pumped media for lubrication. Seal lubricant shall beFDA Approved, nontoxic.

2. The lower, primary seal unit, located between the pump and the lubricant chambershall contain one stationary and one positively driven rotating, industrial duty,corrosion resistant, seal rings (Tungsten carbide/Tungsten carbide or Tungstencarbide/silicon carbide). The lower seal shall be independent of the impeller hub.

3. The upper, secondary seal unit, located between the lubricant chamber and themotor housing, chamber shall contain one stationary and one positively drivenrotating, industrial duty, corrosion resistant, seal rings (Tungsten carbide/Tungstencarbide).

4. Each seal interface shall be held in contact by its own spring system. The sealsshall require neither maintenance nor adjustment and shall be capable of operatingin either clockwise or counter clockwise direction of rotation without damage or lossof seal. The seal system shall not be damaged when run dry. No external source ofseal cooling or lubrication water shall be required.

5. The following seal types shall not be considered acceptable nor equal to the dualindependent seal specified: shaft seals without positively driven rotating members, or



conventional double mechanical seals containing either a common single or doublespring acting between the upper and lower seal faces. Cartridge type systems willnot be acceptable. No system requiring a pressure differential to offset pressure andto effect sealing shall be used.

K. The pump shaft shall rotate on at least two (2) heavy duty permanently lubricated bearings.Bearings shall be designed to carry all radial and axial thrust loads and shall have aminimum AFBMA L-10 life of 100,000 hours at all points along the usable portion of thepump curve at maximum pump speed.

L. Each pump, as specified herein or as recommended by the manufacturer, shall be providedwith an integral, self-supplying cooling system that is adequately designed to cool the motorwithout an external cooling source. The cooling jacket shall be of cast-iron construction andshall surround the stator housing. The cooling jacket shall provide heat dissipation for themotor regardless of whether the motor unit is submerged in the pumped media orsurrounded by air. The impeller back vanes shall provide the necessary circulation of thecooling liquid, a portion of the pumpage, through the cooling system. The cooling liquid shallpass through a classifying labyrinth prior to entering the cooling jacket. Two cooling liquidsupply pipes, one discharging low and one discharging high within the jacket, shall direct thecooling liquid to the jacket. An air evacuation tube shall be provided to facilitate air removalfrom within the jacket. Any piping internal to the cooling system shall be shielded from thecooling media flow allowing for unobstructed circular flow within the jacket about the statorhousing. Two cooling liquid return ports shall be provided. The internals to the coolingsystem shall be non-clogging by virtue of their dimensions. Drilled and threaded provisionsfor external cooling and, seal flushing or air relief are to be provided. The cooling jacketshall be equipped with two flanged, gasketed and bolted inspection ports of not less than 4-inch diameter located 180° apart. The cooling system shall provide for continuoussubmerged or completely non-submerged pump operation in liquid or in air having atemperature of up to 40°C (104°F), in accordance with NEMA standards. Restrictionslimiting the ambient or liquid temperatures at levels less than 40°C are not acceptable.

M. Gauge taps shall be provided on the discharge piping of the vertical dry pit submersiblepumps in a location as directed by the ENGINEER. Gauge taps shall be threaded andsupplied with brass corporation stops.

N. All anchor bolts, lifting bolts, eye lugs, etc. necessary for complete installation andmaintenance of the pump shall be furnished by CONTRACTOR and constructed of Type316 stainless steel and shall be adequately designed for its intended use.

2.02 PUMP CHARACTERISTICS AND SERVICE CONDITIONS

Designation

Location RAS Pump Station

Number of Units required 3

Pump Identification Numbers 70-P-3

70-P-4



70-P-5

Pump and Motor Arrangement Vertical

Liquid PumpedDescriptionSuspended Solids, mg/L

Return Activated Sludge

6,000-12,000

Minimum Solids Passing, inches 3

Connection Size, inchesSuctionDischarge

108

Connection Type Flange

Motor Horsepower(1) (non-overloading) 25

Maximum Motor Speed, rpm 1,800 at 60 hz

Minimum Motor Speed, rpm 1,200 at 40 hz

Pump Best Efficiency Point(at max. pump speed):

Flow, gpm(2)

Total Head, feetMinimum Pump Efficiency, %

1,5003178

Shut Off Head, feetMaximum Pump OperatingSpeed, rpm

62

1,800

Operating Point No. 1(at max. pump speed):

Flow, gpm(2)


1,60028.577

Operating Point No. 2(at max. pump speed):

Flow, gpm(2)


2,3501255

Operating Point No. 3(at min. pump speed):

Flow, gpm(2)


2682350

Operating Point No. 4(at min. pump speed):

Flow, gpm(2)

Total head, feetMinimum Pump Efficiency, %

1,3001060



NPSH Available, feet 31.5

Manufacturer and model FLYGT NT 3153 LT 3-414(1) Along entire characteristic curve of impeller.(2) Flow rates specified are in terms of fluid pumped, i.e., RAS

2.02 ELECTRICAL REQUIREMENTS

A. The pump manufacturer shall provide the power and control cables between the pump and alocal disconnect switch mounted within 30 feet of the pump motor. All pumps for the samepumping application shall be provided with the same length of cable. No splices shall beallowed but field trimming of the cable shall be allowed to fit actual conduit run distance.Cables shall be PVC or oil resistant chloroprene rubber jacketed type SPC cable suitable forsubmersible pump applications, shall be sized according to NEC and ICEA standards, andshall meet with MSHA approval. Stainless steel strain relief connectors shall be furnishedfor all cables.

B. Covers shall be installed on exposed cables to shield the sun.

C. Cable Entry Water Seal

1. The cable entry water seal design shall insure a watertight and submersible sealwithout specific torque requirements. The cable entry shall be comprised of a singlecylindrical elastomer grommet, flanked by stainless steel washers all having a closetolerance fit against the cable outside diameter and the entry inside diameter andcompressed by the entry body containing a strain relief function, separate from thefunction of sealing the cable. The assembly shall bear against a shoulder in thepump top. The cable entry junction chamber and motor shall be separated by astator lead sealing gland or terminal board, which shall isolate gaining accessthrough the pump top. The junction chamber containing the terminal board shall besealed from the motor by an elastomer compression seal O-ring. Connectionbetween the cable conductors and stator leads shall be made with threadedcompressed type binding post permanently affixed to the terminal board and thusperfectly leak proof. Each pump shall be equipped with separate terminal board thattotally isolates the incoming power supply from the pump motor.

2. An acceptable alternate cable entry seal shall include cable leads shall enter at thetop of the motor and shall allow the cable-to-motor connection to be accomplished inthe field without soldering. All power and control lead wires shall be double sealedas they enter the motor in such a manner that cable-wicking will not occur. Thissealing system shall consist of a rubber grommet followed by epoxy that is high inadhesive qualities and has a low coefficient of expansion. Each conductor shallhave a small section of insulation removed to establish a window area of bare wireand each wire shall be untwisted and surrounded by epoxy potting material. A cablestrain relief mechanism shall be an integral part of the sealing system. The cablesealing system shall be capable of withstanding an external pressure test of 1,200psi as well as a cable assembly pull test as required by Underwriters Laboratories.Power and control leads shall be terminated on a sealed terminal board. Theterminal board and its bronze lugs shall be O-ring sealed.



3. Manufacturer shall provide means to connect or securely fasten an electrical conduitor pull box, to be supplied by the CONTRACTOR, to the motor cable entry point toallow the motor cable to be routed through conduit to the disconnect to limitexposure to direct sunlight. Connection method shall be capable of dis-assembly toallow cable to be easily removed with motor for maintenance.

D. Electrical Requirements Summary

RAS PumpsMotorsNumber of pumps/motors 3Rating 460V, 3 ph, 60 HzHorsepower 20Speed, rpm 1,800Insulation Class HType Dry Pit

SubmersibleInverter Duty YesService Factor 1.0Moisture Seal Switch YesMotor Winding Temperature Switches YesRTDs NoCooling Jacket Yes

E. The pump motor shall be a NEMA B design, squirrel-cage induction type, housed in awatertight chamber. The stator winding and stator leads shall be moisture resistant. Theuse of bolts, pins, or other fastening devices requiring penetration of the stator housing shallnot be allowed.

F. The motor shall be guaranteed for continuous unsubmerged duty, capable of sustaining upto fifteen (15) starts per hour without overheating.

G. The motor shall be provided with pre-lubricated radial and thrust bearings which aredesigned to carry the entire load which may be imposed upon it under all operatingconditions.

H. All motors shall be of nationally known manufacture, shall be housed in enclosuresspecifically designed for submersible pump application.

I. Pumps and motors shall be specifically designed for operation with variable frequency drivespeed controls.

J. Motors controlled by variable frequency drives shall be inverter duty rated in accordance withNEMA MG1, Part 31.

2.03 CONTROLS AND INSTRUMENTATION



A. The pumps shall be supplied with a lockout stop control station supplied under Division 16.All controls for the pumps shall be as supplied with the pump variable frequency drive (seeSection 16370) and as described in Section 17000.

PART 3 -- EXECUTION

3.01 GENERAL

A. Each pump shall be installed by the CONTRACTOR in strict accordance with themanufacturer’s instructions and recommendations. The CONTRACTOR shall coordinatewith the pump supplier to complete field services as required. The CONTRACTOR shall beresponsible for ensuring that all other disciplines match the needs of the pump equipmentincluding piping, structural, and electrical components.

B. The pump supplier shall inspect and verify that structures or surfaces on which equipmentwill be installed have no defects which will adversely affect installation.

C. The pump supplier shall inspect all equipment prior to installation.

D. The pump supplier shall promptly report defects which may affect the Work to ENGINEER.

3.02 PRODUCT DELIVERY, STORAGE AND HANDLING

A. The pump supplier shall be responsible for packing, shipping, and delivery of equipment andmaterials to be furnished under this specification. All equipment shall be suitably packagedto facilitate storage, handling, and shipping in accordance with the manufacturer’srecommendations and as otherwise necessary to protect against damage during transit. Allequipment shall be boxed, crated, or otherwise completely enclosed and protected duringstorage, shipment and handling. All equipment shall be protected from exposure to theelements and shall be kept dry at all times.

B. Painted and coated surfaces shall be protected against impact, abrasion, discoloration, andother damage. Painted and coated surfaces which are damaged prior or during delivery shallbe repainted to the satisfaction of the ENGINEER. Grease and lubricating oil shall beapplied to all bearings and similar items.

C. Before shipping, each item of equipment shall be tagged or marked as identified in thedelivery schedule or on the Shop Drawings. Complete packing lists and bills of material shallbe included with each shipment.


A. Pumps and motors shall be shop primed and finished with the pump manufacturer’sstandard coating system suitable for outdoor environment in Central Florida. Provide factoryprime and intermediate coats. Apply finish coats in the field. Touch up finish paint shall besupplied to the CONTRACTOR as needed and at the CONTRACTOR’s expense. The colorof the finish coat and touch up finish paint shall match the adjacent piping.



3.04 PUMP PERFORMANCE VERIFICATION

A. Once all the pumps and pump motors have been fabricated and prior to shipment of theequipment, all of the pumps and motors shall be tested in accordance with Sections3.05.A.1-2 of this specification. The actual pump and motor shall be tested together atvarious speeds ranging from full speed to 60 percent speed in 10 percent increments.

B. Following completion of the factory testing, and prior to shipping the pumps, theCONTRACTOR shall submit the certified pump curves and motor test results to theENGINEER. The pump curves and motor test results shall distinctly demonstrate the actualefficiencies of the pump and motor at each of the speed increments throughout the full pumprange.

3.05 SHOP TESTING AND FIELD STARTUP EQUIPMENT TESTING

A. The pump supplier shall provide certification that each pump has been tested in accordancewith Specification Sections 01020, 01660, and the following:

1. Pump Factory Tests: Tests shall be performed in accordance with the Standards ofthe Hydraulic Institute, Inc. Tests shall be performed on the actual assembled unitfrom shut-off head condition to 25 percent below the required design capacity.Pump shop tests shall be made by the manufacturer and certified curves shall besubmitted to the ENGINEER. The ENGINEER reserves the right to inspect themanufacturer's testing facilities. Prior to conducting a pump test, notification of suchtest and a list of test equipment and test procedures shall be forwarded to theENGINEER at least ten (10) working days before the scheduled test date. Allelectronic transducers, meters, gauges, and test instruments shall be calibratedwithin 30 days prior to the scheduled test and certified calibration data shall beprovided. Differential pressure type flow meters, such as Venturi meters arepreferred and shall have been calibrated, and its accuracy certified within the past 12months. In case of failure of any unit to meet the test requirements, themanufacturer shall make such alterations as are necessary, and the tests shall berepeated without additional cost to the OWNER until the equipment test is passed.

2. Field Tests: All pumping units shall be field tested after installation to demonstratesatisfactory operation, without causing excessive noise, vibration, cavitation, andoverheating of the bearings. The field testing shall be performed by an experiencedfield representative of the manufacturer, who shall supervise the following tasks andshall certify in writing that the equipment and controls have been properly installed,aligned, lubricated, adjusted, and readied for operation:

1) Start-up, check, and operate the equipment over the entire speed range. Thevibration shall be within the amplitude limits recommended in the HydraulicInstitute Standards and it shall be recorded at a minimum of 4 pumpingconditions defined by the ENGINEER (typically the maximum, twointermediate, and minimum speeds).

2) Pump performance shall be documented by obtaining concurrent readings,showing motor voltage, amperage, pump suction head, and pump discharge



head, for at least 4 pumping conditions at each pump rpm. Each power lead tothe motor shall be checked for proper current balance.

3) Electrical and instrumentation testing shall demonstrate the specified functionshave been met to the satisfaction of the OWNER.

4) Impeller, motor rating and electrical connections shall be checked.

5) A motor and cable insulation test for moisture content or defective insulationshall be made.

6) Pumps shall be run initially to verify correct rotation and mechanical integrity.

7) Pumps shall be run continuously for 2 hours under load with no damage to themotor. During this test, the pump shall demonstrate compliance with thespecified performance for flow, head, and horsepower and shall experience aheat rise of not greater than 45C (80F) above ambient temperature.

B. Control Loop Testing: The CONTRACTOR shall perform loop tests on all control functionsprovided through the VFDs, new instruments supplied under this contract, and interfacesignals made to/from the plant SCADA system. Initial loop tests shall document that eachsignal has been properly terminated, signal strength is within specified range, ranges foranalog signals have been appropriately and consistently set, and all control functions for theloop are functioning as intended. Once loop tests for a particular pump have beencompleted successfully, the pump can be placed in service in accordance with the approvedconstruction sequencing plan.

C. Demonstration Testing: For each pump placed in service, a demonstration test shall beperformed, witnessed by the ENGINEER and OWNER, to verify the pumps, motors, drives,instruments, sensors, signals, and control functions are operating as intended and asspecified. Demonstration test procedures shall be submitted to the ENGINEER for approvalat least 30 days prior to placing the pump(s) in service. Documentation shall provide includetest procedures and/or previous testing results to demonstrate both the physical (vibration,volume, head, temperature) performance and control function (manual, automatic, staging,alarms, operator interface) performance meet the requirements of the specifications.

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11215-1 VERTICAL TURBINE PUMPS

SECTION 11215 – VERTICAL TURBINE PUMPS

PART 1 -- GENERAL

1.01 SCOPE OF WORK

A. The CONTRACTOR shall furnish and install all tools, supplies, materials, equipment,and labor necessary for the installation, testing, and placing into operation of all verticalturbine pumps and appurtenances, complete and operable, all in accordance with therequirements of the Contract Documents.

B. The pump supplier shall include, in his bid, time, labor, materials and tools required forinstallation assistance, testing and start-up with the CONTRACTOR.

C. The pump supplier shall have unit responsibility for coordinating the proper pumpmounting system with the CONTRACTOR to ensure a vibration free, stable pumpoperation.

D. Vertical turbine pumps shall be provided in accordance with the requirements ofSection 11000 – Equipment General Provisions and Section 11100, Pumps, General.


A. Section 01300 – Submittals

B. Section 01600 – Materials and Equipment

C. Section 01660 – Equipment Testing, Training and Start-Up

D. Section 11000 – Equipment General Provisions

E. Section 11100 – Pumps, General

F. Division 15 – Mechanical

G. Division 16 – Electrical

H. Division 17 – Instrumentation

1.03 SUBMITTALS

A. Shop Drawings and Operation and Maintenance Manuals shall be submitted inaccordance with Section 01300 – Submittals and Section 11000 – Equipment GeneralProvisions. The following additional items shall also be submitted:

1. Performance Affidavit

2. Manufacturer’s literature, data sheets, fabrication information, installationinstructions, assembly views.



3. Complete lubrication instructions and lubricant schedule, includingmanufacturer’s recommended lubricant. All lubricants shall be food grade, NSF61 approved. Schedule shall include frequency of lubricant application, type oflubricant, and instructions regarding lubricant application.

4. Provide weight of entire pump assembly, including motor and base weight ofindividual major subassemblies.

B. Submit results of factory tests, field tests, and start up reports.

C. Performance curves submitted shall be for the entire pump assembly, includingefficiency corrections and losses.


A. The pump supplier shall furnish a minimum of a two (2) year warranty to assure thatany equipment specified herein which does not meet the performance requirements forthe specifications, is repaired to the OWNER’s satisfaction or replaced with equipmentthat does meet the performance requirements of the specification and be inaccordance with Specification Section 01300 Part 1.07.

1.05 DEFINITIONS

A. Terms shall be as defined in ANSI / AWWA E103 Standard for Horizontal and VerticalLine-Shaft Pumps.

B. Additional terms are defined below:

1. Submergence: Vertical distance in feet between the pumping water level and thebottom of the first stage impeller.

PART 2 – PRODUCTS

2.01 ACCEPTABLE MANUFACTURERS

A. Manufacturer shall have a minimum of 10 years of experience of producingsubstantially similar equipment and shall be able to show evidence of at least 5substantially similar installations in satisfactory operation for at least 5 years in the stateof Florida.

B. Vertical turbine pumps shall be as manufactured by Fairbanks Morse, Flowserve, orPeerless.

C. The electric motor shall be provided by the pump manufacturer and shall be one of thenamed manufacturers specified in Section 16150.

2.02 GENERAL

A. All equipment for the pumps, including motors, and bases, shall be provided as acomplete unit by the pump manufacturer.

B. All pumps for same pumping application shall be provided by one manufacturer.




A. When operating at the maximum output speed each pump shall have a characteristicperformance curve which meets all the minimum conditions listed in the pumpschedule. The pumps and drive motors shall be capable of operating satisfactorilyunder the full-range of speed, flow and pressure conditions as defined by the pumpschedule. Pump efficiency as defined herein shall be bowl efficiency.

B. The impeller diameter required for the specified operating conditions shall not exceed95% of the maximum impeller diameter for the pump provided to provide flexibility inmeeting specified head within required tolerance and allow increased duty for futureconditions.

C. Each pumping unit and its driving equipment shall be designed and constructed towithstand the maximum turbine run-away speed of the unit due to backflow through thepump with the primary TDH specified available at the pump discharge flange.Maximum reverse run-away speed shall not exceed 130 percent of the design operatingspeed.

D. Design operating capacity shall be between 80% and 115% of best efficiency point(BEP).

E. Pump Operating Conditions

DescriptionFilter Backwash

PumpsEffluent Transfer

Pumps

1 Pump Identification Numbers80-P-180-P-2

90-P-190-P-290-P-3

2 Number of Units2 3

4 Maximum Pump Operating Speed (rpm) 1200 12005 Number of Stages As Required

6

Primary Operating Point(at maximum pump speed):

a. Flow (gpm)b. Total Head (feet)c. Minimum Bowl Efficiency (%) at Design

Point

4,0004478

2,5003682

7

Pump curves shall follow curve developedfrom secondary design points shown inadjacent columns for each pump. Total headat each point shall be within +-2 feet ofsecondary design points.

Flow (gpm) TDH (feet)0 751650 613300 485000 385800 306650 20

Flow (gpm) TDH (feet)0 611150 491900 432250 402650 343000 25

8Maximum NPSH Required at PrimaryOperating Point at centerline of impeller offirst stage (feet)

15 15



9Minimum NSPH Available at PrimaryOperating Point at centerline of impeller offirst stage (feet)

25.4 25.4

10Maximum Shut Off Head (feet)(at maximum pump speed)

80 65

11 Motor Type Solid Shaft Solid Shaft12 Power Supply 480 V, 3 phase, 60 Hz 480 V, 3 phase, 60 Hz13 Fluid Pumped Reclaimed Water Reclaimed Water14 Fluid Temperature (degrees F) 70 7015 Fluid Specific Gravity 1.0 1.016 Fluid pH range 6-9 6-9

17Fluid Viscosity (absolute centipoises at 60degrees F)

1.0 1.0

18 Pump ModelsFlowserve 17 EPHPeerless 18HH, orapproved equal

Flowserve 16 ENHPeerless 16HXB orapproved equal

E. Pump Dimensions

Dimension Description Filter BackwashPumps

Effluent TransferPumps

Pump Column Diameter (inches) 16 12

Discharge Diameter (inches) 16 12

2.04 SUCTION AND DISCHARGE HEAD

A. The discharge head shall have bolted register or rabbet-fit connections for the motor.Discharge head shall have connections for the pump column and shall support theloadings that it imposes as well as hydrostatic and hydrodynamic heads.

B. Design columns and discharge heads for 100% of the pump discharge pressure(suction pressure plus pump differential pressure) at shutoff. Hydrostatically testcolumns, discharge heads and bowls at 130% of design pressure.

C. Access to the stuffing box shall be through windows placed 90 degrees from thedischarge. Fit handholes or windows with stainless steel, expanded metal guards instainless steel frames to protect the exposed shaft and coupling.

D. The discharge head outlet pipe shall be Class 150 flanges, complying with ANSIB16.5. If cast iron discharge heads are specified, flange shall be Class 125.

E. Provide for lifting the heads by means of lifting eyes that are capable of sustaining theweight of the complete unit less the motor.

F. Provide the following connections on the discharge head:

Filter BackwashPumps

EffluentTransfer Pumps



Seal Drain 1 – inch NPT 1 – inch NPT

Discharge Gauge 1/2 - inch NPT 1/2 - inch NPT

Air Release Valve 2 – inch NPT 2 – inch NPT

2.05 MECHANICAL SEAL

A. Mechanical seals shall be used to seal the pump shaft and prevent leakage of thepumped liquid. Mechanical seals shall be provided as follows:

1. Seal face location: inside seal cavity2. Type: single pusher, balanced3. Assembly: component4. Metal materials: Type 316 stainless steel or Alloy C-2765. Elastomers: EPDM6. Seal faces: Carbon vs. silicon carbide7. API flush plan: 138. Manufacturers: AES, Chesterton, Flowserve, John Crane, or equal

2.06 SHAFTS

A. Shafting shall be polished over its full length. Support the shafting by bearings atintervals so that the first natural frequency complies with Section 11190 – Pumps,General. Calculate the shaft diameter using the formulas given in AWWA E103 for thepump shutoff head.

B. Shafts shall be supported by no fewer than two lineshaft bearings (not includingstuffing box bushing or bowl bearings). Lineshaft bearings shall be supported bybearing retainers of the material listed in the subsection on “Pump Materials ofConstruction” and clamped between column pipe flanges for open lineshaft pumps.

C. Shaft couplings for shaft diameters 2 inches or larger shall be of the key and thrust-ring types or other nonthreaded design.

D. The pump shaft shall be coupled to the motor shaft by a Type 410 stainless steel fourpiece adjustable spacer coupling that allows axial adjustment and removal of thecomplete seal assembly without disturbing the driver. An adjusting plate shall be partof the coupling.

E. Total eccentricity between pump shaft and motor shaft for pumps with solid shaftmotors shall not exceed 0.002 inch total indicator reading. Angular misalignment shallnot exceed 0.001 inch/inch.

2.07 BOWL ASSEMBLY

A. Each bowl assembly shall consist of the discharge bowl, impeller, impeller shafting,and a bearing above the impeller. A bearing below the first stage impeller shall belocated in the suction case or bell.



B. Pump bowls shall be of the material listed under the subsection on “Pump Materials ofConstruction”. Bowls shall be sufficiently rigid to prevent adverse changes in bearingalignment and to maintain the running clearances of seal rings. Bowls shall be flangedwith male and female rabbets for joining to the suction bell and the discharge column.Bolts shall be Type 316 stainless steel. Waterways and the diffusion vanes shall besmooth and free from nodules, bumps, and dips. Provide the bowls with a renewablewear ring adjacent to the impeller, made of materials as indicated under “PumpMaterials of Construction”. Cast iron bowls shall be internally lined with vitreousenamel or coated with 12 mils of fusion bonded epoxy. All fusion bonded epoxy shallbe heat-cured.

2.08 SUCTION BELL

A. The suction bell shall have, as an integral part, vanes supporting a central hub inwhich the bottom bearing is carried below the impeller. The outer suction bell entranceshall be at least the size of the maximum pump bowl dimension and as much larger asis practical. Maximum entrance velocity shall not exceed 5 fps based on the outsidediameter of the suction bell. The contour between the outer edge and the impellersuction eye shall be smooth, continuous, and bell shaped. Provide Type 316 stainlesssteel suction strainer/vortex suppressor.

2.09 IMPELLERS

A. Pump impellers shall be of the enclosed type, cast in one piece of the material listed inthe subsection on “Pump Materials of Construction”. Impellers shall incorporate aclose fitting annular clearance with the case at the suction eye and be equipped withreplaceable wearing rings. Impellers shall be positively secured to the shaft in such amanner that they cannot become loose under any operating condition or under reverserotation or torque. For pumps having bowl diameters greater than 15 inches and allpumps with stainless steel impellers and shafts, impellers shall be keyed to the shaftand positively secured against axial movement. Dynamically balance impellers to thetolerances specified by ISO 1940-1, grade G-6.3. Provide for adjustment of the axialposition of the impellers at the pump shaft connection to the motor shaft to obtainproper clearance between bowls and impellers.

2.10 COLUMN PIPE

A. The column pipe joints shall be flanged and bolted to the discharge head and to thepump bowl assembly and shall have register fits at each end. Material shall be aslisted in the subsection on “Pump Materials of Construction.” Provide bearing retainercontaining an EPDM bearing as an integral part of the top end of each section where alineshaft bearing is used. As an alternative, provide a separate retainer that isregistered in the pipe flanges and easily removable for maintenance.

B. Top and bottom column pipe sections shall not exceed 5-foot length.

2.11 VIBRATION

C. The maximum vibration level measured on the top of the discharge head for any speedand operating point within the Preferred Operating Region shall not exceed that shownin Figure 9.6.4.2.5.16 of the Hydraulic Institute Standards as measured on the installedpump during field testing.



D. The pump and motor assembly shall be designed so that its lateral critical speedavoids the operating speed range by a margin of 25 percent above and below themaximum and minimum speeds, respectively, assuming a rigid foundation.Manufacturer calculations that show compliance with this requirement shall befurnished with the shop drawing submittal.

E. The CONTRACTOR shall coordinate pump installation requirements with the pumpsupplier to ensure a vibration free and stable installation.

F. The pump supplier shall have unit responsibility for coordinating and fabricating theproper pump mounting design for the layout shown on the drawings. If, in the opinionof the pump supplier, the openings or other aspects of the pump mounting designmust be revised to allow for vibration free, stable pump operation, the CONTRACTORshall submit said revisions to the ENGINEER for review, comment and acceptance.The CONTRACTOR shall then be responsible for implementing such revisions at noadditional cost.

2.12 DISCHARGE HEAD AND COLUMN FABRICATION

A. Welding shall conform to the following:

1. Welding procedures and performance qualifications shall be in accordance withAWWA Standards with written certification from the manufacturer.

2. The minimum number of passes for welded joints shall be as follows:

Steel Cylinder Thickness(inch)

Minimum Number ofPasses for Welds

Less than 0.1875 1

0.1875 through 0.25 2

Greater than 0.25 3

3. Welds shall be full circumferential.

B. Beveled ends for butt welding shall conform to ANSI B16.25. Remove slag bychipping or grinding. Surfaces shall be clean of paint, oil, rust, scale, slag, and othermaterial detrimental to welding.

C. Test the seams by the dye-penetrant method per ASTM E 165, Method B.

D. Welded stainless steel components shall be pickled and passivated followingfabrication. All surfaces shall be free of heat tint, scale and slag. Manufacturer shallprovide written certification that passivation has been completed prior to shipment ofequipment.

2.13 PUMP MATERIALS OF CONSTRUCTION

A. Materials of construction shall conform to the requirements listed below and thesection entitled “Pumps, General”.



ComponentFilter Backwash Pumps Effluent Transfer Pumps

Pump shafts andline shafts

Stainless Steel, Type 416 Stainless Steel, Type 416

Shaft couplings Stainless Steel, Type 410 Stainless Steel, Type 410

Bowl wear rings Bronze Bronze

Bowl impellersAluminum Bronze ASTM B148

alloy C95200Aluminum Bronze ASTM

B148 alloy C95200

Pump bowls,discharge case, andsuction bell

Cast Iron Cast Iron

Impeller keys andthrust rings


Pump columnsCarbon Steel Pipe, ASTM

A53, Sch 30*Carbon Steel Pipe, ASTM

A53, Sch 30*

Discharge heads Carbon Steel, ASTM A36 Carbon Steel, ASTM A36

Sole plate Carbon Steel, ASTM A36 Carbon Steel, ASTM A36

Sleeve bearings Bronze Bronze

Lineshaft bearings EPDM EPDM

Adjustable spacercoupling


Bearing Retainers Bronze Bronze

Basket type suctionstrainer

Stainless Steel, Type 316L Stainless Steel, Type 316L

Bolts and nuts

Bolts shall be StainlessSteel, Type 316 (ASTM

A193, Grade B8M)

Nuts shall be StainlessSteel, Type 316 (ASTM

A194, Grade 8M)

Bolts shall be StainlessSteel, Type 316 (ASTM

A193, Grade B8M)

Nuts shall be Stainless Steel,Type 316 (ASTM A194, Grade

8M)

* or higher schedule if required to meet vibration criteria.

B. The impeller and bowl wearing rings shall not be constructed of the same material.Impeller and bowl wearing rings materials shall have a minimum Brinell hardnessdifference of 50.



2.14 MOTORS AND DRIVES

A. The motor for the pump shall be of the vertical solid shaft, totally enclosed fancooled, squirrel cage induction type in accordance with Section 16150 - ElectricMotors, unless specifically modified herein. The motor shall be designed to acceptall downthrust and upthrust loads imposed by the pump during starting and running.The maximum speed and horsepower of each motor shall be as specified. Therated horsepower shall be such that the motors will not be overloaded nor the motornameplate horsepower exceeded at the specified Primary Operating Point.

B. Motor Data

Motor Data Filter Backwash Pumps Effluent Transfer Pumps

Type Direct Coupled – Vertical Direct Coupled – Vertical

Horsepower 60 30Voltage 460v 460vPhase 3 3Frequency 60 Hz 60 HzMaximum Speed, rpm 1200 1200Enclosure Type TEFC TEFCInverter Duty No NoThermal Protection Thermostats ThermostatsMotor Speed Control Constant Constant

Non-reverse ratchet Yes YesMaximum Sound at 3 feet 80 dBA 80 dBASpace Heater Yes, 120 V, single phase Yes, 120 V, single phaseMiscellaneous See Note 1 See Note 1

Notes1: Provide oversized Terminal Box. Provide breathers and drains for TEFC enclosures. Provide

motor shaft brushes.

C. Thrust bearings and guide bearings shall be anti-friction type and grease or oillubricated. Thrust bearings for motors of 125 hp and larger and guide bearings formotors of 250 hp and larger shall be oil lubricated. Bearings shall have a minimumABMA L10 life of 100,000 hours. Water cooling of thrust bearings shall not be used.

2.15 SPECIAL TOOLS AND SPARE PARTS

A. Provide in accordance with Section 11100 – Equipment General Provisions andSection 11190 – Pumps, General.

B. Provide the following spare parts for each pump:

Quantity DescriptionOne set Impeller wear ringsOne set Bowl wear ringsTwo sets Bowl bearingsTwo sets Shaft bearingsOne Shaft coupling



One set Impellers

Two sets Gaskets and o-rings

Two Mechanical Seals

C. Pack spare parts in wooden boxes; label with manufacturer’s name and localrepresentative’s name, address, and telephone number; and attach list of materialscontained therein.

PART 3 – EXECUTION

3.01 INSTALLATION

A. CONTRACTOR shall install pumps according to manufacturer’s recommendations andas shown on the Drawings.

B. General installation requirements shall be as specified in Section 11100 - Pumps,General, and Section 01600 - Materials and Equipment and Section 11000 - EquipmentGeneral.

C. CONTRACTOR shall have unit responsibility for the proper coordination, sizing, andinstallation of the pump foundation/mounting requirements based on the manufacturer’srecommendations, subject to ENGINEER’S review and comment.

D. Manufacturer’s technical representative shall perform or supervise the followingactivities prior to starting each pump:

1. Installation of mechanical seals

2. Alignment of pump and motor shafts

3. Impeller end clearance adjustment

E. After installation and until substantial completion, all pump shafts shall be rotatedweekly in the presence of the ENGINEER.

F. For materials delivered and stored prior to installation, CONTRACTOR shall providewritten documentation of recommendations from the pump manufacturer.CONTRACTOR shall ensure all recommendations are followed during storage period.

3.02 MANUFACTURER’S FIELD SERVICES

A. Refer to Section 01020 – Construction Sequencing for requirements regarding thenumber of pumps that must remain in service. At a minimum for each pump, theCONTRACTOR shall furnish the services of a qualified manufacturer's technicalrepresentative in accordance Section 01600 - Materials and Equipment and Section11100 - Pumps, General and for a period of not less than five (5) days as follows:

1. At least one (1) trip of one (1) day to check and supervise the equipmentinstallation, supervise start-up, and supervise testing and adjustments of theequipment.



2. At least one (1) trip of one (1) day to supervise initial start-up and operation and toinstruct the OWNER's personnel in proper operation and maintenance of theequipment.

3. At least one (1) trip of one (1) day to assist the OWNER during the guaranteeperiod.

3.03 SHIPPING AND HANDLING

A. Shipping and handling requirements shall be as specified in Section 01600 - Materialsand Equipment.

B. Factory assembled parts and components shall not be dismantled for shipment unlesspermission is received in writing from the ENGINEER.

C. Machined surfaces of all exposed pump openings or other exposed unpainted surfacesshall be protected by wooden blanks or Cosmoline, as appropriate, strongly built andsecurely bolted thereto.

D. After hydrostatic or other tests, all entrapped water shall be drained prior to shipment,and proper care shall be taken to protect parts from the entrance of water duringshipment, storage and handling.

3.04 PUMP TESTS

A. Pump Tests: Each pump shall be tested in the factory in accordance with Section 11100– Pumps, General.

B. Field Tests: CONTRACTOR shall perform field tests on the completed pump installationin accordance with Section 11100 – Pumps, General.

C. Field vibration and alignment tests shall be performed on all pumps. In addition, naturalresonance testing shall be conducted on each pump assembly utilizing the standard“Bump Test” method. The CONTRACTOR shall procure the services of an independentpredictive/preventive maintenance laboratory service to perform baseline vibration testson the subject equipment. The testing laboratory shall be independent from theCONTRACTOR and Supplier. Testing shall be conducted at maximum, intermediateand minimum pump operating speeds for the assembled pumping units in place afterinstallation. Vibration tests will be conducted in the presence of the ENGINEER inaccordance with the procedures outlined in the applicable standards of the HydraulicInstitute and maximum vibration shall be within the limits set forth therein. In the eventvibration exceeds the specified limits, the pump manufacturer shall make all requiredbalancing and frame adjustments to bring the equipment within the Hydraulic Institutelimits and re-perform the baseline vibration testing until the system complies prior toacceptance of any pumping equipment. The results of the final baseline analysis will bedelivered to the OWNER.

D. Noise measurements shall be taken in the field and shall comply with Hydraulic InstituteStandards and as specified herein. Testing shall be performed by the CONTRACTOR.

E. After the pump manufacturer’s representative has determined the pump installation iscorrect and the pumps are ready for continuous use, CONTRACTOR shall test operate



the pumps under actual operating conditions for a minimum of the next ten (10) days inaccordance with Specification Section 01660, Part 1.05.

3.05 PAINTING

A. All surface preparation, shop painting, field painting, and field repairs shall conform toSection 11000 – Equipment General Provisions and Division 9.

B. Mating surfaces or mounting flanges and sole plates shall not be coated.

C. Ferrous surfaces in water passages and submerged surfaces shall be coated withpolyamidoamine epoxy in accordance with Division 9. The coatings shall be listed byANSI/NSF International to be in compliance with NSF 61.

D. At a minimum, pump Manufacturer shall factory coat the exterior of the bowlassemblies, interior and exterior of the pump column, and interior of the discharge headwith a minimum of 10 mil DFT epoxy.

- END OF SECTION -


11372-1 RECIPROCATING AIR COMPRESSOR

SECTION 11372 - RECIPROCATING AIR COMPRESSOR ASSEMBLY

PART 1 -- GENERAL


A. The CONTRACTOR shall furnish, install, test, adjust, and place in satisfactoryoperation one self-contained fully pressure lubricated reciprocating simplex pistonair compressor package. The package consists of the compressor, a motor, V-beltdrive, tank drain, and totally enclosed belt guard all mounted on an ASME NationalBoard approved air receiver, and shall include suitable piping between thecompressor, control, receiver, dryer, filter, oil / water separator, and othercomponents required for a complete and operable compressor system as shown onthe Drawings and specified herein. All current air lines shall be reconnected.

B. Equipment and manufacturer’s services shall be provided in accordance with therequirements of Section 11000 – Equipment General Provisions.


A. Section 01300 – Submittals

B. Section 01600 – Materials and Equipment

C. Section 01660 – Equipment Testing, Training and Start-Up

D. Section 11000 – Equipment General Provisions

E. Division 15 – Mechanical

F. Division 16 – Electrical

G. Division 17 – Instrumentation

1.03 SUBMITTALS

A. In addition to the submittal requirements specified in Section 01300 - Submittals andSection 11000 - Equipment General Provisions, submit the following:

1. Complete shop drawings and operation and maintenance manuals.

2. Submit manufacturer's catalog data and detail drawings showing all compressorparts and auxiliary equipment, described by material of construction,specification (such as AISI, ASTM, SAE, or CDA), and grade or type. Showcapacities and noted pressure. Show linings and coatings. Identify eachcompressor by tag number to which the catalog data and detail sheets pertain.

3. Submit electrical drawings showing wiring, controls, interlocks, terminals, anddisconnects. Label each terminal; showing which control or electrical power wireconnects to each terminal.

4. Submit ASME Forms U-1 or U-1A for each receiver tank after tank fabrication.For Code UM vessels, submit Form U-3 certificate of compliance only.



5. Submit certification that each receiver meets the ASME Boiler and PressureVessel Code.

6. Submit manufacturer's certification that air compressor mounted on receivertank meets OSHA requirements.

7. Support locations and loads that will be transmitted to bases and foundations.Weights of all system components and the total weight of the operatingcompressor.

8. Terms shall be as defined in the ASME PTC-9.


A. The compressor supplier shall furnish a minimum of a two (2) year warranty toassure that any equipment specified herein which does not meet the performancerequirements for the specifications, is repaired to the OWNER’s satisfaction orreplaced with equipment that does meet the performance requirements of thespecification and be in accordance with Specification Section 01300 Part 1.07.

1.05 DEFINITIONS

A. Terms shall be as defined in the ASME PTC-9.

1.06 MANUFACTURER'S SERVICES

A. Provide equipment manufacturer's services at the jobsite for the minimum labor dayslisted below, travel time excluded:

1. One half labor-day for each air compressor assembly listed in the subsection on"Service Conditions" to check the installation and advise during start-up, testing,and adjusting of the equipment and to instruct the OWNER's personnel in theoperation and maintenance of the equipment.

2. OWNER will videotape all training sessions. OWNER reserves all rights for videoreproduction and distribution of videotaped training sessions.

3. The supplier shall include one site visit after six months of operation to verifyproper operation and make adjustments.

PART 2 – PRODUCTS

2.01 ACCEPTABLE MANUFACTURERS

A. Air Compressor Assembly shall be Model F350 as manufactured by Quincy,2545E10-V as manufactured by Ingersoll Rand or engineer approved equal.


A. Operating conditions and performance requirements are provided below.

1. For operation with existing two belt filter press units.



a. No. of Units: one (1)

b. Tag Number: 115-AC-1

c. Location: Dewatering Building (Process 115)

2. Service Conditions

Service: Outdoors (covered)

Maximum ambient temperature: 120°F

Compressor:

Type: Two-stage, single cylinder,oil-lubricated

Minimum compressor rated capacity: 17.4 acfm

Rated compressor discharge pressureat rated capacity (measured ataftercooler outlet):

175 psig

Air filter silencer type: Dry

Motor horsepower(minimum):

5

Motor service factor (minimum): 1.15

Motor type (per Section 16150): NEMA WP-2

Receiver:

Size (minimum): 200 gallons

ASME design pressure rating: 200 psig

Pressure switch settings (on/off): 150 psig

Control panel enclosure rating: NEMA 4X

2.03 AIR COMPRESSOR

A. The basic compressor shall be of the single-acting, two-stage, pressure lubricated,air-cooled reciprocating piston type. Cylinders will be cast iron with deep cooling finsand shall be bolted to the crankcase for ease of maintenance and rebuild.

B. Valve assemblies shall be removable individually without removing the cast ironhead and inlet or discharge piping. The compressor shall have lapped disc typevalves for continuous service.



C. The two piece connecting rod with replaceable inserts shall have passages forpositive oil distribution to the piston pins. Low pressure pistons will be aluminum withthree automotive type compression rings and one automotive type oil ring. The highpressure pistons will be cast iron with three automotive type compression rings andone automotive type oil ring. Connecting rod inserts shall be steel backed babbittlined automotive type and crankshaft shall have integral counterweights and be rifledrilled for pressure lubrication to ensure positive oil distribution.

D. Adjustable anti-friction tapered roller bearings shall be mounted on each end of thecrankshaft to take both radial and thrust loads. The fan type compressor flywheelshall be dynamically balanced. An integral finned intercooler shall be located in thedirect blast of air from the flywheel.

E. Compressors shall have a crankshaft driven oil pump with oil filter and gauge. Lowoil pressure protection shall be a standard feature of the compressor, as well asautomatic loadless starting to allow oil pressure to build before the air compressorloads.

F. A 10 micron inlet air filter with a metal housing shall be standard.

2.04 DRIVE MOTOR

A. The compressor package shall be driven by a nominal 1750 RPM electric motorsuitable for continuous operation. Three phase motors shall be EISA rated.

B. The motor shall be a NEMA “T” frame, squirrel cage induction-type with an open-drip proof enclosure and shall be rigidly bolted to the base plate assembly for simpleand reliable manual belt adjustment.

C. The service factor on the standard motors will be a minimum of 1.15.

2.05 FLEXIBLE CONNECTORS

A. Flexible connectors shall be of the corrugated metal hose type with an external braid.Connectors shall have a minimum pressure rating as stated in the subsection on"Service Conditions" for the particular compressor. Corrugation tubing material shallbe Type 316 stainless steel with Type 321 stainless steel braid material. Endconnections shall be ground joint female union with ANSI/ASME B1.20.1 NPTthreads. Flexible connectors shall be American BOA Type B4, Flexonics Series400H or Type RW, or equal.

2.06 AFTERCOOLER

A. Provide a belt-guard type air-cooled after-cooler after the compressor.

B. After-cooler shall be capable of cooling the compressed air to within 25°F of theambient air temperature at the compressor air inlet.

C. Provide an automatic condensate trap to remove accumulated moisture from theafter-cooler.

2.07 RECEIVERS



A. Tank shall comply with Section VIII, Division 1, of the ASME Boiler and PressureVessel Code. Steel plates shall be selected from those listed in Table UCS-23 ofsaid code. Galvanize interior and exterior of receiver. Pressure rating shall be notless than the ASME design pressure rating specified in the section on "ServiceConditions" below. Perform standard hydrostatic test in the shop. Test pressure shallbe 150% of the ASME pressure rating.

2.08 INTEGRATED DRYER

A. Refrigerated air dryer sized for 33% duty cycle shall be provided with climate controlduplex packages.

2.09 OIL AND WATER SEPARATOR

A. Oil and water separator shall be capable of removing all compressor lubricantsincluding polyglycol emulsions.

B. Separator shall be of the carbon-free filter media type.

2.10 PRESSURE SWITCHES

A. Provide 1/4-inch ANSI/ASME B1.20.1 NPT inlet threaded, adjustable differential-type pressure switch to start compressor and to stop compressor. Pressure ratingshall be at least 400 psi. Bourdon tubes, bellows, and diaphragms shall be Type303, 304, 316, or 403 stainless steel. Voltage rating shall be 120-volt, 60-hertz a-c.Contacts shall be rated for at least 10 amperes. Provide NEMA 4X enclosure.Provide with stainless steel pipe nipples and fittings, two-way gauge cock, andstainless steel pulsation dampener. Pressure settings shall be as specified in"Service Conditions" below. Manufacturers: Allen-Bradley, Barksdale, Mercoid,United Electric, or equal.

2.11 PRESSURE GAUGE ASSEMBLIES

A. Provide one 1/2-inch ANSI/ASME B1.20.1 NPT inlet threaded pressure gaugeassembly at the receiver tank. Assembly shall include 4-1/2-inch gauge, stainlesssteel pipe nipples and fittings, three-way gauge cock, stainless steel pulsationdampener.

2.12 AUTOMATIC DRAIN TRAP FOR RECEIVER

A. Where after-cooler is plumbed to flow into receiver, provide an automatic drain trapwith receiver tank to drain tank to outdoors at atmospheric pressure.

2.13 SAFETY RELIEF VALVES

A. Provide a safety relief valve on each receiver. Safety relief valves comply with theASME Boiler and Pressure Vessel Code for air service. Valve shall close whenpressure drops to the allowable range. Valve size shall not be less than that requiredto maintain the receiver at its ASME design pressure while discharging the aircompressor capacity at that pressure. Provide external lifting levers. Valves shallhave a pressure rating at least 25 psi higher than the discharge pressure rating ofthe compressor or pressure rating not to exceed the receiver ASME pressure rating,whichever is appropriate. Valve bodies (including caps, bases, and bonnets) shall



be bronze (ASTM B61 or B62) or Type 304 or 316 stainless steel. Discs and springsshall be Type 304, 316, or 420 stainless steel. Valves shall have bottom inlet andside outlet. Inlet shall have NPT threads, ANSI/ASME B1.20.1. Valve shallincorporate a calibrated spring set to allow the valve to open at the setting shown inthe subsection on "Service Conditions." Valve shall be Consolidated Figure 1541 or1543, Birkett/Richards Series B, Crosby Series 900, or equal.

2.14 CONTROLS

A. Provide control panel mounted on compressor assembly or common support systemcomplete with fusible disconnect switch, magnetic motor starter, control transformer,wiring, and control switch for each compressor. Enclosure shall be sheet metal;NEMA rated as shown in section on "Service Conditions," bonderized, and paintedANSI Z55.1 No. 61 gray. Starters and control devices shall conform to NEMAstandards for the horsepower of the motor provided. Control transformer shall be drytype, with secondary voltage of 120-volt a-c. Control switches shall be maintainedcontact, hand-off-auto selector switches with spring returns from hand to offpositions.

B. The panel shall as a minimum include the following devices mounted on the frontdoor.

1. Hand-Off-Auto selector switch for each motor.

2. Run indicator for each motor.

3. Power on indicator.

4. Low oil pressure indicator.

5. High air temperature indicator.

6. Elapsed time meter for each motor.

7. Alarm reset.

C. The control panel shall include thirty percent (30%) extra mounting space foradditional equipment. The enclosure shall allow a minimum 8 inches (8") of clearspace above the main circuit breakers and 10 inches (10") below the motor startersfor making wire terminations. The control panel enclosure shall have a minimum 6inches (6") of clear space along each side with bracing to allow strapping of theincoming power feeder from the electric service. The control panel enclosure shallbe Underwriters Laboratories (UL) 50 Type 3R listed. Mount all components in asingle enclosure. Top of panel shall be solid with no penetrations.

D. All indicators shall be NEMA 4X LED type.

E. NEMA rated motor starters for each motor, with solid-state overload relay that isclose coupled to the contactor.

F. A 3-pole motor circuit protector shall protect each motor. The motor circuit protectorshall be operated by a toggle-type handle and contain a quick-make, quick-break,over center switching mechanism mechanically trip-free from the handle so contacts



cannot be held closed against a short circuit and abnormal currents causing themotor circuit protector to trip.

G. Phase Monitor: A 3-phase monitor shall be installed and wired to disconnect controlpower from the motor starters in the event of loss of power, phase reversal, loss ofany phase or phase balance, or low voltage. The phase monitor shall automaticallyreset upon removal of any and all of the preceding conditions.

H. Audible Alarm: The audible alarm shall consist of a weatherproof high intensityelectronic horn mounted on the side of the enclosure. The audible alarm shall beequipped with a control panel mounted pushbutton silencer. The alarm circuit willautomatically reset when the alarm condition is corrected and reset button pressed.Main and Branch Circuit Breakers: All circuit breakers shall be heavy-duty industrialservice molded case breakers with amperage rating as required. All circuit breakersshall have an appropriate locking device to meet OSHA lockout and tag-out rules.Both main and emergency breakers shall be equal in size. Circuit breakers shallbe thermo-magnetic as manufactured by Square D.

I. All interior wiring shall be 600-volt rated stranded copper, identified at each end.

2.15 PAINTING AND COATING

A. All surface preparation, shop painting, field painting, and field repairs shall conformto Section 11000 – Equipment General Provisions and Division 9.

2.16 CONNECTING VALVES AND PIPING

A. Steel piping for air distribution line and common drain line shall conform to ASTM A53, Type E or S, Grade B; ASTM A 106, Grade B; ASTM A 135, Grade B; or ASTMA 587 with Supplementary Requirement S1 "Hydrostatic Testing." Pipe 3 inches andsmaller shall be Schedule 80 standard weight per ASME B36.10, except wheregreater wall thickness is required to accommodate lugs for thrust harnesses onflexible pipe couplings.

2.17 ANCHOR BOLTS

A. Air compressor assembly manufacturer shall size anchor bolts and recommendspacing. Anchor bolts shall be the cast-in-place type.

2.18 SPARE PARTS

A. Provide the following spare parts for each compressor:

Quantity Description

2 sets

sets

Gaskets, valve springs

2 V-belts

1 Flexible connector

1 Safety relief valve

1 set

set

Fuses for compressor motor disconnectswitch



2 sets Filters

Year supply Oil

B. Pack spare parts in a wooden box; label with the manufacturer's name and localrepresentative's name, address, and telephone number; and attach list of materialscontained within.

PART 3 – EXECUTION

3.01 INSTALLATION

A. Embed anchor bolts in Portland cement concrete support slab per air compressorassembly manufacturer's instructions. Use templates to hold bolts in position. Mountair compressor assembly support feet on dry-packed mortar.

B. Collect drain lines from receiver and plumb to drain outside the building by ball valveand steel piping.

C. Connect air distribution line with ball valve and check valve.

D. Reconnect all air lines.

E. Provide the manufacturer's recommended lubricants and operating fluids and verifythat each piece of equipment contains the amount recommended by themanufacturer.

F. Provide final grouting of the compressor assembly base.

G. Provide continuous protection of the installed equipment from the elements, dust,debris, paint spatter, or other conditions that will adversely affect the unit's operationuntil such time as the equipment is scheduled for start-up testing.

- END OF SECTION -


11377-1 FINE BUBBLE DIFFUSED AERATION

SECTION 11377 - FINE BUBBLE DIFFUSED AERATION EQUIPMENT

PART 1 -- GENERAL


A. The CONTRACTOR shall furnish all labor, materials, tools and equipment necessary forsupply, installation, testing, and placing into satisfactory operation all fine bubblemembrane diffused aeration equipment in the existing Sludge Holding Basins 1 and 2 asshown on the Contract Drawings and as specified herein.

B. The diffused aeration equipment shall be provided complete with all accessories, specialtools, spare parts, mountings, anchor bolts, and other appurtenances as specified and asmay be required for a complete and operating installation. All air piping, supports, diffusers,etc. downstream of the butterfly valves at the top of the drop pipes shall be supplied by thediffused aeration equipment manufacturer.

C. Diffuser system shall be manufactured by Sanitaire, a Xylem Brand, AquariusTechnologies or engineer approved equal. Being named in this specification does notexempt the diffused aeration equipment supplier from meeting the performancerequirements specified herein.


A. Division 1 - General Requirements

B. Division 5 - Metals

C. Section 11000 - Equipment General Provisions

1.03 REFERENCE SPECIFICATIONS, CODES AND STANDARDS

A. Shall be as specified in Section 01090, Reference Standards.

1.04 SUBMITTALS

A. The CONTRACTOR shall submit Shop Drawings, Operation and MaintenanceInstructions and other information as specified in accordance with Section 11000 -Equipment General Provisions and Section 01300 - Submittals. Detailed layoutdrawings for the diffused aeration system in Sludge Holding Basins 1 and 2 shallbe based on tank dimensions as confirmed in the field by the CONTRACTOR. TheCONTRACTOR shall field verify dimensions in empty basins including jet mixingpiping and sludge suction piping locations including elevations and shall provideinformation to the membrane diffuser equipment manufacturer before shopdrawings are prepared and submitted.

B. Submit manufacturer's catalog data and descriptive literature. Call out materials ofconstruction of discs, gaskets, headers, baseplates, and other parts. Show headloss through disc at specified minimum and maximum airflows.



C. Submit piping layout showing arrangement and location of discs and air piping inthe Sludge Holding Basins. Show location and type of expansion joints. Showlocation of every pipe support. Show layout of piping around obstructions within thetanks.

D. Installation instructions shall be complete including anchoring, leveling, fastening,inspection, provisions for expansion/contraction, etc. The manufacturer'sinstallation instructions shall be submitted prior to shipment of the diffuserequipment.

E. In order to demonstrate satisfactory experience and qualifications, provide aninstallation list for a minimum of ten (10) operating installations, at a minimum offive (5) different facilities, for not less than three (3) consecutive years from finalcompletion of the respective project of the installation. The installations must bewithin the contiguous lower forty-eight (48) States of the United States of America.At a minimum the reference information shall include the following;

1. Current Owner Reference Contact Information

2. Installation Service Conditions

3. Equipment Model Numbers

4. Date of Final Completion of the Project

F. Submit details of pipe support system within the basins. Describe material ofconstruction of supports and anchor bolts by ASTM reference and grade.

G. A list of spare parts that are to be supplied with the project in accordance with thisspecification.

H. Submit copies of report on the results of the factory testing of the discs.

I. Submit six copies of a written report prepared by the manufacturer/manufacturer’srepresentative certifying that the equipment has been properly installed.

J. Operation and Maintenance Manuals per Section 01730 with installationinstructions, operation and start-up procedures and a complete bill of materials forall equipment.


A. The diffuser supplier shall furnish a minimum of a two (2) year warranty to assurethat any equipment specified herein which does not meet the performancerequirements for the specifications, is repaired to the OWNER’s satisfaction orreplaced with equipment that does meet the performance requirements of thespecification and be in accordance with Specification Section 01300 Part 1.07.

B. The manufacturer shall furnish, deliver, and install new parts to replace thedefective parts. The manufacturer shall furnish all supervision, labor, equipment,



and materials to repair or replace components which have failed as defined by thewarranty at no cost to the OWNER.


A. The materials covered by these Specifications are intended to be standardequipment of proven reliability and as manufactured by reputable manufacturershaving experience in the production of such equipment.

B. The equipment furnished shall be designed, constructed, and installed inaccordance with the best practices and methods and shall operate satisfactorilywhen installed as shown on the Contract Drawings and operated per themanufacturer's recommendations.

C. All material shall be new and both workmanship and materials shall be of the verybest quality, totally suitable for use with compressed air for the service conditionsindicated in the Contract Documents.

D. All components of the fine bubble diffuser system shall have been used successfullyby the Manufacturer on previous installations. The manufacturer shall note anynew or changed components on the submittal drawings for ENGINEER approval.

E. The diffuser manufacturer is required to prove satisfactory experience in the designand manufacturing of fine bubble diffused aeration systems.

F. Design of support systems, system for expansion and contraction, and diffuserassemblies shall be the full undivided responsibility of the equipment manufacturer.Layout of the equipment in the reactor shall be the responsibility of the equipmentmanufacturer and shall meet the Equipment Requirements specified herein.

G. The system for expansion and contraction and all diffuser system components shallbe designed for a temperature range of a minimum of 0°F (diffuser headers out ofservice and exposed) to a maximum of 140°F (diffuser in operation with limitedsubmergence of the diffusers).

H. The membrane fine bubble aeration system shall be supplied as a complete systemfrom a single manufacturer.


A. The CONTRACTOR shall arrange for the manufacturer to furnish the services of aqualified manufacturer's technical representative with at least three years ofexperience, who is regularly involved in the inspection, installation, start-up, testing,operation, and maintenance of fine bubble aeration systems. The service person(s)shall:

1. Witness installation procedures and check installation.

2. Witness and check operation at start-up.

3. Assist the CONTRACTOR in performing field testing and prepare a written report



as specified below.

4. Troubleshoot, document and correct any equipment problems which are notedduring initial operation.

5. Submit written certification signed by the service person and a corporate officer,Vice President or higher, that the system has been properly installed, tested, andadjusted and that the system operates as required, including dates of field testsand a listing of all persons present during the tests.

6. Investigate and correct any equipment problems which may arise during thewarranty period of the equipment.

7. Instruct the OWNER's personnel in proper operation and maintenance of theequipment.

B. Such services shall be furnished at no additional cost to the OWNER and shallentail a period of not less than 4 days and a minimum of 3 site visits.

C. The times specified are exclusive of travel time to and from the facility and shall notbe construed as to relieve the Manufacturer of any additional visits to providesufficient service to place the equipment in satisfactory operation.

D. Any additional time required to achieve successful installation and operation shallbe at the expense of the CONTRACTOR.

E. The Manufacturer's representative shall sign in and out at the ENGINEER’s FieldOffice on each day and shall comply with OWNER requirements for visiting the site.

F. A written report covering the representative's findings and installation approval shallbe mailed directly to the ENGINEER covering all inspection and outlining in detailany deficiencies noted.

G. OWNER will videotape all training sessions. OWNER reserves all rights for videoreproduction and distribution of videotaped training sessions.

H. The supplier shall include one site visit after six months of operation to verify properoperation and make adjustments.

PART 2 -- PRODUCTS


A. Sludge Holding Basins 1 and 2

1. The membrane fine bubble diffuser system shall be used in an aerated sludgeholding process to transfer oxygen into the waste activated sludge (0.8% to 2.5%solids by weight). Methanol, ethanol, acetic acid, sodium acetate, corn syrup,glycerol, Micro-C™, anionic polymer, cationic polymer, solids recycle streams,sodium hypochlorite, alum, ferric chloride, polyaluminate chlorides, sodiumaluminate, magnesium hydroxide, calcium hydroxide and fats, oils and grease



may also be present in any stage of the aeration tanks. The list of possibleconstituents in the wastewater is not limited to this list. The system manufacturershall ensure that all materials are compatible with these and other potentialconstituents found in wastewater.

2. The air diffuser system shall consist of circular EPDM membrane discs mountedon a submerged plastic piping network.

3. The system manufacturer shall guarantee diffuser system performance forspecified transfer efficiency and headloss.

4. The diffusers and diffuser system shall operate efficiently and effectively overthe range 0.5 to 3.0 scfm per diffuser for a 9 inch disc. Use a maximum designflow of 3.0 scfm per nominal 9-inch diameter disc.

5. Membrane diffuser transfer efficiency and headloss requirements at 12.7 feet ofdiffuser submergence at various diffuser airflow rates and the diffuser densities(expressed as tank surface area / total diffuser area (AT/AD)) provided belowshall be as follows:

Airflow/Diffuser(scfm)

Headloss AcrossOrifice Plus

Diffuser (in. H2O)

Minimum Standard Oxygen TransferEfficiency (%)

AT/AD = 7.0 AT/AD= 10.8 AT/AD = 15.7

1.20 16.0 25.4 24.7 24.3

1.75 19.0 24.5 23.8 23.5

2.35 24.0 23.9 23.2 22.8

a. Standard oxygen transfer efficiency shall be based on a liquid temperature of20°C, oxygen saturation value and transfer characteristic (KLa) equal to thatof clean tap water at 20°C, and initial dissolved oxygen concentration of zeromg/l, an alpha factor of 1.0, a beta factor of 1.0, and a temperature correctionfactor (theta) of 1.024.

b. No tolerance shall be allowed for required minimum oxygen transferefficiency. Tolerance for measured headloss shall be -15 percent and +10percent.

c. The diffuser manufacturer shall provide control orifices sized for the requiredheadloss.

6. All new diffused aeration equipment shall be furnished and installed such that theelevation of the top of the diffuser membranes for all sludge holding basins (1, 2,3 and 4) are at the same elevation.

7. The design of the piping or grid system shall provide a maximum head loss of0.03 psi per 100 feet of piping. Minimum piping size for the grid system shall be3 inches.

8. The diffused aeration equipment will be installed into sludge holding basins 1 and2 alongside the existing jet mixing equipment. Diffuser piping and supports must



be designed to withstand the high velocity environment created by the jet mixingequipment.

2.02 EQUIPMENT REQUIREMENTS

A. Sludge Holding Basins 1 and 2

1. Layout of diffusers in the diffuser grids shall be submitted for ENGINEER reviewand shall provide as uniform a pattern of active diffusers as possible. The diffusergrids must avoid existing jet mixing piping and sludge suction piping.

2. The CONTRACTOR shall remove all existing aeration equipment and furnish anew complete and operational membrane fine bubble aeration system including,but not limited to, drop pipes, manifolds, diffuser headers, diffuser holders,membrane diffuser elements, and supports. The CONTRACTOR shall repair anyconcrete or coating damaged in the removal of the existing aeration equipment.

a. Drop pipe shall be a minimum of 12 gauge stainless steel from the air mainconnection to a point 3 ft above the manifold.

b. Provide a stainless steel flange with a 150-pound drilling at the topconnection.

c. Provide a stainless steel EPDM gasketed coupling for connection to themanifold.

3. Service Conditions:

a. Sludge Holding Basins 1 and 2

Number of Basins: 2

Total airflow per basin: 1,060 scfm

Number of Drops per Basin: One (1)

Number of. Drops (Total) : Two (2)

Drop Header Diameter: 10 inches

Sidewater Depth: 13.6 feet

Maximum Pressure at Drop Header Connection: 6.66 psi

SOR (lb/day): 19,971

Average scfm per Diffuser 9-inch disc: (maximum), 3.0

4. The CONTRACTOR shall furnish aeration equipment as follows:



a. Sludge Holding Basins 1 and 2 – 9 inch disc

GridDropleg

Diam. (in)Minimum

RowsMembrane

diffusers/tank1 10 20 9402 10 20 940Totals 1,880

2.03 PIPING AND SUPPORTS

A. The submerged air piping shall connect to a flanged or band coupling Type 316Lstainless steel drop header connection as shown on the drawings.

B. Submerged manifolds and distribution piping shall be un-plasticized polyvinyl(UPVC). Pipe shall conform to Type I, Grade 1 (Class 12454-B) per ASTM D 1784and D 1785 or ASTM D 3034 and ASTM D 3915. Minimum pipe wall thickness shallbe Schedule 40 or equivalent wall thickness. Provide 2% titanium dioxide (byweight) in the pipe shell for ultraviolet protection.

C. Fittings shall be of the same material as the pipe. Minimum wall thickness shall beSchedule 40 or equivalent wall thickness.

D. Piping shall be mounted on Type 316 stainless steel adjustable supports. Mountingbracket, base, and u-bolt or strap shall be Type 316 stainless steel. Anchor boltsshall be Type 316 stainless steel with a minimum embedment length of 2 inches.Minimum anchor bolt size shall be 3/8 inch. Supports shall permit raising or loweringthe pipe to compensate for variations in the tank floor elevation. Provide a varianceof ± 1-1/8 inches from the mean elevation of any piping. Design supports tocompensate for sloping and variations in the tank floor elevation. Equivalent pipesupports that are designed to accommodate a sloped floor if necessary and providevertical adjustment for leveling the system will also be acceptable. Design floormounted piping system to accommodate expansion and contraction of the pipingsystem.

E. The headers shall be fabricated in sections not exceeding 23-feet in length withsections joined by fixed joints and anchored by guide (sliding) supports.

F. The pipe and piping grid design and installation shall withstand the normal systemoperating pressures and temperatures as well as all surges during start-up periods.

G. Corners and ends of the grid shall be equipped with easily removable caps or plugsfor clean out of the grid piping interior.

H. The header system shall consist of fixed joints between header pipes and guidesupports which allow movement of the pipe with changes in temperature. Supportspacing shall not exceed 7½ feet.

I. The support system shall be designed to withstand a force at least equal to 4 times



the buoyant force.

J. The entire system shall be designed, manufactured, and installed in such a mannerthat all the diffuser elements in all tanks are within + 1/8-inch of a common diffuserelevation.

K. Air distribution shall be uniform throughout the entire system and shall be uniformover the entire horizontal projected surface of each diffuser element.

L. All air manifolds, diffuser headers, and diffusers shall be capable of being installedprecisely at level and of remaining level under all conditions of operation whetherthe aeration basins are full, partially full, or empty.

M. Header supports shall resist forces caused by the operation of the jet mixing inthese tanks. Supports in these zones shall consist of a minimum ½-inch threadedstainless steel support base rod and ½-inch Nylok nuts versus 5/16-inch threadedstainless steel support base rod in the remaining cells. A sway brace with 316stainless steel struts for additional support shall be provided as needed

2.04 MEMBRANE DISC DIFFUSERS

A. Manufacture circular membrane diffuser discs of EPDM synthetic rubber compoundwith precision die formed slits.

B. Diffuser shall be a one-piece injection molded part for a nominal 9-inch diameterunit.

C. The EPDM rubber compound shall have the following minimum characteristics:

PARAMETER VALUE/UNITS ASTM

Base Polymer: EPDM

UV Resistance: Carbon Black

Specific Gravity: 1.25 or Less

Ozone Resistance: Pass D1171

Durometer, Shore A: 45 Point + 5 or

58 Point + 5 2240

Tensile Strength: 1200 PSI D412

Elongation at Break: 350% D412

Accelerated Aging Max. Compression Set:

@ 23°C, 22 Hrs. 20% D573



@ 70°C, 22 Hrs. 40% D573

D. Furnish diffuser membranes with uniform distribution of air bubble release acrossthe active surface of the diffuser element when submerged in water. Manufacturemembrane discs with integral sealing gasket.

E. Furnish diffuser membranes to meet or exceed the following criteria: Membraneshall collapse and seal when aeration system air is turned off.

2.05 DIFFUSERS ASSEMBLIES

A. Furnish diffuser assemblies consisting of a diffuser membrane with diffuserassembly or diffuser holder, air flow control orifice, and retaining device withgaskets as required. Diffusers utilizing ceramic or plastictype diffusion media elements will not be acceptable as alternatives to themembrane disc design. Diffusers that require a center bolt to limit membranedeflection will not be allowed. Tubular type diffusers will not be allowed.

B. Diffuser Assemblies – Furnish diffuser assemblies including diffuser, holder,retaining ring and air flow control orifice.

1. Diffuser holders shall incorporate diffuser holder and membrane support plateas a single unit. Multiple piece assemblies will not be acceptable.

2. Diffuser holders shall be factory bonded to the crown of the distributor with onecontinuous contact area of 13 square inches minimum to ensure structuralintegrity and strength.

3. Diffuser holders will be factory solvent welded and ultrasonically staked to thepipe to maximize adhesion and ensure a positive air seal.

4. The diffuser holders shall be attached to the distributor piping followingapplication of primer along the crown of the pipe, mechanically scrubbed andallowing sufficient activation time. Solvent shall be applied to the pod to insurefull coverage without voids at the pod to pipe interface.

5. The holder shall be applied to the pipe immediately followed by an ultra-sonicweld to create a hermetic seal and securely hold the holder in place while thesolvent sets and cures.

6. Diffuser holders shall be attached to the pipe with no more than +/- 1 degreeangular variation from top dead center, and no greater than +/- 1/8” lateralspacing variation to insure diffuser uniformity within the grid piping.

7. Attach element holders to the distribution headers to resist dead load of 200 lbs.applied vertically to the outer edge of the diffuser unit.

8. Furnish retaining device to securely hold and seal the membrane diffuser to theholder.

C. Design diffuser assembly to prevent air escape at the diffuser element-sealing



gasket interface.

D. Sealing method or retaining device shall generate a minimum of 50 pounds per inchof circumference of the sealing gasket to provide a long term positive seal andprevent air escape except through the active area of the diffuser membrane.

E. If a screw on retainer ring is used, it shall be provided with a positive O-ring seatand a minimum of 2 complete threads for engagement. Threads shall have aminimum cross section of 1/8 inch.

F. Maximum spacing between diffuser assemblies shall be coordinated with hydraulicmixing nozzle layout. Typical maximum spacing between diffuser assemblies shallnot exceed 4 feet on a distribution header or between distribution headers tominimize solids build-up between the diffuser assemblies.

2.05 EXPANSION JOINTS AND FIXED JOINTS

A. Provide a PVC expansion system to prevent thermally induced stresses due toexpansion and contraction over a temperature range of 140 degrees F (60 degreesC). All expansion joints shall be airtight and permit free and easy movement of theplain end of the pipe within the coupling barrel.

B. Expansion joints shall consist of a barrel section solvent welded to one end of thelateral pipe, an O-ring gasket and a threaded, screw-on retainer ring. Expansioncouplings shall meet the following criteria:

1. Minimum stroke – 4 inches (100 mm).

2. Average force to operate – 50 lbs (23 kg).

C. Fixed joints shall consist of a spigot section solvent welded to one end of adistribution lateral, a threaded socket section solvent welded to the matingdistribution lateral, an O-ring gasket, and a threaded screw-on retainer ring. The o-ring will be compressed on four sides and will provide an uninterrupted 360-degreerotation to allow leveling of adjacent distributors. When tightened slight internalprojections will provide anti-rotation feature through the o-ring. Unions will splinelocks or ratchets will not be acceptable. Threads shall be a minimum of 0.013square inches to provide adequate strength of the socket and retainer ring.

2.06 PURGE SUMP OR DRAINLINE, SUMP, AND AIRLIFT PURGE SYSTEM

A. Provide a continuous Purge Sump Assembly with internal suction tube locatedwithin the low point of the manifold to discharge above the high water level.

B. Alternatively the manifold pipe can be used as the drain line for the grid with lowpoint within the manifold pipe and airlift purge system.

1. Connect drain sump or manifold pipe to 3/4-inch (19 mm) diameter airlift eductorline extending to the drain line invert elevation. Extend airlift eductor to a point 18inches (450 mm) above the basin water level and terminate with a PVC ball valve.

2. Support airlift eductor with Type 316L stainless steel brackets at walkway or



platform beam location.

3. The PVC ball valve and termination piping shall be supported by the handrailusing aluminum pipe supports such that the PVC ball valve is accessible from thewalkway.

4. Systems using drain lines at the ends of the aeration grids shall be provided witha combination support/thrust anchor at each header-drain line connection toprevent joint blow-apart.

2.08 SPARE PARTS

A. Provide the following spare parts for the fine bubble diffuser system:

Quantity Description

2% of the quantity installed Membrane Disc Diffusers and DiffuserAssemblies

2% of the quantity installed Threaded retainer rings

B. Pack the spare parts in wooden boxes; label with the manufacturer's name andlocal representative's name, address, and telephone number; and attach list withpart number of materials contained within.

PART 3 -- EXECUTION

3.01 INSTALLATION

A. Install membrane disc diffusers in accordance with the manufacturer's instructionsand recommendations.

B. The CONTRACTOR shall replace any diffusers which are broken or damaged inshipment, in relocation or during installation at no additional cost to the OWNER.

C. The CONTRACTOR shall also be responsible for providing proper storage at noadditional cost to the OWNER.

D. Diffusers to be stored by the OWNER at the end of construction shall be inspectedfor integrity prior to acceptance for storage.

E. Each aeration basin shall be cleaned by the CONTRACTOR to remove all debrisfrom the basin to provide for proper installation of the fine bubble diffused aerationequipment.

F. The CONTRACTOR shall comply with manufacturer's recommendations afterdiffusers are installed and before and during placement into operation to ensurethat diffusers are maintained in "new" condition and to prevent any sliming or bio-fouling of the diffuser elements.

G. The CONTRACTOR shall minimize the time that grid piping is exposed to sunlight



by completing installation of piping and diffusers in a tank within three weeks fromthe installation of the first piping in the tank and shall cover the system with plantservice water until the system is placed in service. The OWNER will provide plantservice water at no charge to the CONTRACTOR. CONTRACTOR shall provideall equipment and pay all costs to pump or transport plant service water to theaeration basins. In the event that the CONTRACTOR’s activities preclude theusage of plant service water, the CONTRACTOR shall be responsible for all costsassociated with providing potable water. OWNER cannot guarantee the quality orsolids content of the plant service water.

H. Concrete anchors shall not be installed within 6 inches of any concrete expansionjoint.

I. CONTRACTOR shall clean air header pipe, mains, submains, laterals, blowers,filters and droplegs prior to installing diffuser elements.

J. CONTRACTOR shall protect diffuser elements from unpressurized submergencein wastewater.

K. Mount the membrane discs to the baseplates attached to the UPVC pipe. InstallO-ring seals and apply the manufacturer's recommended lubricant before screwingon the threaded retainer rings.

L. Bolt the pipe saddles to the concrete floor using adhesive anchors recommendedby Manufacturer.

M. Provide PVC joints at 20’ nominal intervals and furnish expansion couplings, guidesupports and fixed supports at locations appropriate to accommodate expansionand contraction of the piping system.

N. Provide header pipe supports at maximum spacings of 7’ 6”.

O. The top of the diffuser assemblies shall be at the same elevation, ±1/8 inch. Afterthe diffuser assemblies are installed, fill a basin with water to the top of the discsand check that each disc is within this range.

P. The top of the diffuser assemblies shall be at the elevation shown in the drawings,±1/8 inch. A surveyor licensed in Florida will verify the elevation matches theelevations in the other sludge holding tanks.

3.02 HANDLING AND STORAGE

A. Special care shall be exercised during delivery, handling, and storage ofequipment and material to prevent damage, degradation of materials, and fouling.Delivery shall be scheduled by the CONTRACTOR to minimize time materials arestored on site. Materials shall not be stored on site for more than 90 days. In theevent the storage time exceeds 90 days, the OWNER can require storage in abonded, climate controlled facility at no expense to the OWNER

B. Delivery, handling, and storage of the piping and equipment shall be in accordance



with manufacturer's recommendations and as specified in Section 01010 -Summary of Work.

C. Store piping and diffusers indoors prior to installation.

D. Within 48 hours of installing the diffusers, fill the basin with water to a level 1 footabove the tops of the discs.

E. All parts of the air diffusion equipment shall be shipped to the job site adequatelypalletized and protected from breakage and dirt.

F. All PVC air laterals as well as PVC and stainless steel headers, shall be cratedand supported in a wood framework. All loose fittings, pipe supports, etc., shall beadequately boxed and palletized. All equipment shall remain palletized and boxeduntil the time of installation.

3.03 CERTIFICATION

A. Provide a written certification from the equipment manufacturer that theequipment has been properly installed according to the plans, specificationsand manufacturer’s specifications, and that the equipment is operatingnormally. Make all necessary corrections and adjustments at no additional costto the OWNER.

- END OF SECTION –



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