6_1_1

Toledo Refinery

Site Technical Practices EP 6-1-1

Centrifugal Pumps of 17 October 2009 Revision 0.3

Maintained by E2G – Shaker Heights, OH

TABLE OF CONTENTS INTRODUCTION ................................................................................................................................................... 2 1.0 SCOPE ....................................................................................................................................................... 2 2.0 NORMATIVE REFERENCES .................................................................................................................... 3 3.0 TERMS AND DEFINITIONS ...................................................................................................................... 3 4.0 CLASSIFICATION AND DESIGNATION .................................................................................................. 3

4.3 UNITS AND GOVERNING REQUIREMENTS ....................................................................................... 3 5.0 BASIC DESIGN .......................................................................................................................................... 4

5.1 GENERAL .............................................................................................................................................. 4 5.3 PRESSURE CASINGS ........................................................................................................................... 5 5.4 NOZZLES AND PRESSURE CASING CONNECTIONS ....................................................................... 5 5.6 ROTORS ................................................................................................................................................. 5 5.7 WEAR RINGS AND RUNNING CLEARANCES .................................................................................... 6 5.8 MECHANICAL SHAFT SEALS .............................................................................................................. 6 5.9 DYNAMICS ............................................................................................................................................. 6 5.11 LUBRICATION .................................................................................................................................... 7 5.12 MATERIALS ....................................................................................................................................... 7

6.0 ACCESSORIES ......................................................................................................................................... 8 6.1 DRIVERS ................................................................................................................................................ 8 6.2 COUPLINGS AND GUARDS ................................................................................................................. 9 6.3 BASEPLATES ...................................................................................................................................... 10 6.4 INSTRUMENTATION ........................................................................................................................... 11 6.5 PIPING AND APPURTENANCES ....................................................................................................... 11

7.0 INSPECTION, TESTING AND PREPARATION FOR SHIPMENT ......................................................... 11 7.1 GENERAL ............................................................................................................................................ 11 7.2 INSPECTION ........................................................................................................................................ 11 7.3 TESTING .............................................................................................................................................. 12 7.4 PREPARATION FOR SHIPMENT ....................................................................................................... 12

8.0 SPECIFIC PUMP TYPES ......................................................................................................................... 13 8.1 SINGLE-STAGE OVERHUNG PUMPS ............................................................................................... 13 8.2 BETWEEN-BEARINGS PUMPS (TYPES BB1, BB2, BB3, AND BB5) .............................................. 13 8.3 VERTICALLY SUSPENDED PUMPS (TYPES VS1 THROUGH VS7) ................................................ 14

9.0 VENDOR’S DATA .................................................................................................................................... 16 9.1 GENERAL ............................................................................................................................................ 16 9.2 PROPOSALS ....................................................................................................................................... 16 9.3 CONTRACT DATA ............................................................................................................................... 16

10.0 TABLES ................................................................................................................................................ 17 (REVISED) TABLE B.1 — LUBRICATING-OIL SYSTEM SCHEMATIC .......................................................... 17

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INTRODUCTION

Requirements for Centrifugal Pumps correspond to those of API Standard 610, Tenth Edition, October 2004, with the specific options, deletions, additions, substitutions or modifications sanctioned in this Practice.

The paragraph numbers in this Practice correspond to those used in API 610. Paragraph numbers may not be consecutive and all API paragraphs not mentioned herein shall be considered to be verbatim requirements of this Practice.

Instructions contained in this Practice such as “(Add)”, “(Substitute)”, “(Revise)” or “(New)” shall be interpreted as follows: If information is “added” to an existing paragraph in the API Standard, the requirements of this Practice shall be read as a continuation of that particular API paragraph. If information is “substituted”, the affected API requirement shall be replaced in its entirety by the requirements of the Practice. If information is “revised”, the requirements of this Practice shall be read as a revision to part of the particular API paragraph (i.e.: changed sentence). If information is “new”, it shall be read as an added requirement to the API Standard (i.e.: new paragraph).

The Purchaser’s requirements for all paragraphs in API 610 which require a Purchaser’s decision (●) are indicated on the API 610 Data Sheets or in this Practice. If not addressed in the inquiry, the proposal shall clearly state the basis included in the quoted pricing.

In case of conflict between the various documents, their order of precedence is generally as follows:

1. Purchase Order 2. Data Sheets 3. Project Specifications/Engineering Practices 4. Referenced Industry Standards

1.0 SCOPE

1.1 (New) All conflicting requirements shall be referred to the purchaser in writing prior to issuance of the purchase order. The purchaser will issue confirming documentation if needed for clarification.

1.2 (New) Any deviation from this Practice must be approved by the procedure described in EP 1–1–3.

1.3 (New) A bullet (●) indicates that a decision by the Owner or the Owner’s Engineer is required or that additional information is furnished by the Purchaser.

1.4 (New) A revision bar indicates all changes made to this Revision.

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2.0 NORMATIVE REFERENCES

The latest edition of the following standards and publications are referred to herein.

STANDARDS AND PUBLICATIONS

Site Technical Practices

EP 1–1–3 Deviations to the Site Technical Practices EP 2–5–2 Documentation Format Requirements EP 6–3–1 General Purpose Steam Turbines EP 6–3–2 Special Purpose Steam Turbines EP 6–7–1 Special Requirements for Rotating Equipment EP 6–8–1 Field Storage and Installation of Rotating Equipment EP 13–3–1 Induction Motors NEMA Frame EP 13–3–2 Induction Motors Above 200 HP EP 13–3–4 Induction Motors NEMA Frame 1/2 to 200 HP Explosion Proof

API

Std 610 10th Ed. Centrifugal Pumps for Petroleum, Petrochemical, and Natural Gas Industries RP 686 Recommended Practices for Machinery Installation and Installation Design

3.0 TERMS AND DEFINITIONS

3.60 (New) Contractor – Company or business that agrees to furnish materials or perform specified services at a specified price and/or rate to the Owner.

3.61 (New) Inspector – A Toledo Refinery appointed engineer or inspector.

3.62 (New) Manufacturer – The recipient of a direct or indirect purchase order for materials and/or equipment. In this context, a direct order is one issued to a manufacturer by a contractor or the Owner. An indirect order is one issued to a manufacturer by a vendor (recipient of a direct order) for materials, fabricated components, or subassemblies.

3.63 (New) Owner – The Toledo Refinery.

3.64 (New) Owner’s Engineer – A Toledo Refinery appointed engineer.

4.0 CLASSIFICATION AND DESIGNATION

4.3 Units and Governing Requirements

4.3.1 ● (Add) Any exceptions to the specified dimensional units require purchaser approval.

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5.0 BASIC DESIGN

5.1 General

5.1.1 (Add) The vendor shall quote in strict accordance to the bid inquiry. Alternative bids are acceptable; however, deviations must be completely documented.

5.1.4 (Substitute) All pumps, drivers, accessories, and gears (if required) shall be designed and constructed for continuous operation at the normal and rated operating points and any other anticipated operating conditions specified by the Owner.

5.1.10 ● (Add) At rated capacity, the margin between NPSHa and NPSHr shall be at least 3 feet. Unless otherwise approved by the Owner’s Engineer, for high energy (600 ft per stage or discharge pressure greater than 500 psi ) boiler feed water pumps NPSHr testing criteria should be based on 1% drop in head.

Note: It is a good practice for the owner to define the basis for the NPSHa calculation, noting assumed suction level or if an additional margin was added to cover future detailed hydraulics. NPSH available shall be calcualted based on the fluid vapor pressure at the maximum pumping temperature.

5.1.11 (Substitute) The pump suction specific speed shall be calculated in accordance with Annex A. Suction specific speed greater than 11,000 shall require specific approval by the Owner's Engineer.

5.1.13 ● (Substitute) Pumps shall have stable head/flow curves (continuous rise to shutoff) for all applications. If parallel operation is specified, the head rise from rated point to shutoff shall be at least 10%. If a discharge orifice is used as a means of providing a continuous rise to shutoff, this use shall be stated in the proposal.

5.1.13.1 (New) Pumps for parallel operation shall have equal design head rise to shutoff and equivalent slope. Variation in head between the two pumps within the performance test acceptance criteria is acceptable.

5.1.13.2 ● (New) Low capacity, high head pumps may be exempt from the requirements of Sections 5.1.13 and 5.1.13.1 with the approval of the Owner’s Engineer.

5.1.16 (Revise) Revise first sentence to read: The design intent is to not exceed 85 dBA at three feet from the unit, the vendor shall provide maximum sound pressure level data.

5.1.19 (Substitute) Pumps shall be designed to operate continuously without the use of cooling water. Owner's engineer approval is required for exceptions.

5.1.32 (New) Diffuser or double volutes are required for pumps with discharge nozzle sizes of 4 inch NPS or larger. Impellers with an even number of vanes are not acceptable on double volute pumps unless approved by Owner’s Engineer.

5.1.33 (New) Vendor offerings shall be of duplicate size and design of a pump unit having a minimum of two years proven service.

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5.3 Pressure Casings

5.3.2 (Revise) Revise first sentence to read: The maximum discharge pressure shall be increased by the additional differential pressure developed during one or more of the following operating circumstances:

5.3.6 (Substitute) Regions of vertically suspended and OH6 integral gear-driven pumps that are normally subject only to suction pressure shall be designed, as a minimum, to withstand pressure equal to the maximum discharge pressure at maximum specific gravity conditions. Horizontal BB3 multistage pumps (with 3 or more impellers) may be designed for dual pressure ratings.

5.4 Nozzles and Pressure Casing Connections

5.4.3 Auxillary Connections

5.4.3.1 (Substitute) Threaded connections on auxiliary connections to the pressure casings are not allowed. All piping between the flanged connection outlet and the pressure casing shall be butt welded.

5.4.3.2 Delete.

5.4.3.3 Delete.

5.4.3.4 (Revise) Revise first sentence to read: For flammable or hazardous liquids, auxiliary connections to the pressure casing, except seal gland, shall be butt welded or integrally flanged.

5.4.3.6 (Substitute) Pipe nipples welded to the casing should not be more than 6 inches in length and shall be a minimum of schedule 160 seamless.

5.4.3.7 (Substitute) Threaded openings not connected to piping are only allowed in seal glands.

5.4.3.10 ● (Add) Vents and drains on pumps with other nozzle configurations may also be eliminated with Owner's Engineer approval.

5.4.3.10.1 (New) The suction vent connection on a vertical pump shall be located at the highest point on the suction shell and oriented as far from the inlet nozzle as possible. Another vent is required in the seal flush piping to vent the seal chamber.

5.4.3.12 (New) Seal piping components such as vent valves, cyclones, strainers, coolers, etc shall be structurally supported from the baseplate. Seal piping and tubing shall not be used to support the components.

5.4.3.13 (New) On vertical pumps with a seal drain connection, a drip tube shall be installed in the seal drain connection to prevent pumpage from being slung radially from the pump in the event of a seal failure.

5.6 Rotors

5.6.3 (Revise) Revise the third sentence to read: Collets shall not be used in vertically suspended pumps .

5.6.4 (Revise) Delete the second sentence.

5.6.6 (Substitute) The shaft-to-seal sleeve fit(s) shall be F7/h6 in accordance with ISO 286 (all parts).

5.6.10 b. (Substitute) be free from stencil or scribe marks or any other surface discontinuity, such as an oil hole, keyway, shaft shoulder, or metallic stationary component, for a minimum distance of one probe tip diameter on each side of the probe,

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5.6.16 (New) For single stage overhung pumps, the L3/D4 value shall be included with the Vendor proposal. L is the distance between the centerline of the impeller and the centerline of the closest bearing and D is the shaft diameter under the sleeve.

5.7 Wear Rings and Running Clearances

5.7.1 ● (Add) Impellers for multistage and critical service pumps such as charge pumps shall have integral wear surfaces. OH2 type pumps without impeller hub wear rings require approval by the Owner's Engineer.

5.7.3 (Substitute) Renewable wear rings, if used, shall be held in place by a press fit and shall be tack welded in place. Vendor shall submit weld procedure.

5.7.5 (New) If Vendor requires warm-up of pump to prevent excessive thermal stresses, a detailed procedure including time, flow and temperature requirements shall be included with the proposal.

5.8 Mechanical Shaft Seals

5.8.1 ● (Substitute) The pump manufacturer, the Owner’s Engineer and seal manufacturer’s local representative shall be jointly responsible for the selection of seals.

5.9 Dynamics

5.9.2 Torsional Analysis

5.9.2.6 (Revise) Change “If specified” to “When required by 5.9.2.1.”

5.9.3 Vibration

5.9.3.3 (Revise) Revise last sentence to read: Plotted spectra shall be included with the pump test results.

5.9.4 Balancing

5.9.4.1 Delete.

5.9.4.4 (Revise) Revise first sentence to read: Impellers, balancing drums, and similar rotating components shall be dynamically balanced to ISO 1940-1 G1 (equivalent to 4 W/n in USC terminology). The weight of the arbor used for balancing shall not exceed the weight of the component being balanced.

5.10 Bearings and Bearing Housings

5.10.1 Bearings

5.10.1.5 (Revise) Delete the third sentence.

5.10.1.6 (Add) On applications that have very low net thrust loads, such as single stage, double suction pumps, the vendor shall confirm that the paired single-row 40 Deg angular contact type bearing is acceptable and/or offer an alternate angular contact type bearing good for the service.

5.10.2 Bearing Housings

5.10.2.2 (Revise) Revise the second sentence to read: The housings shall be equipped with a Trico Watchdog 31830 closed system, constant level oiler with protective wire cage, stainless steel body and glass reservoir. (Delete the last sentence.)

5.10.2.8 (Add) Unless otherwise specified by the Owner’s Engineer, pure oil mist is required for rolling element bearing applications. Purge mist is required for hydrodynamic bearing applications without forced oil lubrication systems. Sump lube systems per 5.10.2.2 may be used for pumps in location that are remote from existing oil mist systems. New or revamped process units shall be equipped with oil mist systems.

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5.10.2.12 (Substitute) A flat surface at least 25 mm (1 inch) in diameter shall be supplied for the location of magnetic-based vibration measuring equipment in the locations indicated in Figure 27 and Figure 28.

5.11 Lubrication

5.11.1 (Substitute) Unless otherwise specified, bearings and bearing housings shall be designed for use with a diester based synthetic lubricant.

5.11.3 (Substitute) Provision shall be made for either pure oil or purge oil mist lubrication. (See 5.10.2.8 for requirements)

5.11.4 (Add) Grease lubrication shall be used only when oil mist or oil sump lubrication is not feasible.

5.12 Materials

5.12.1 General

5.12.1.2.1 (New) Positive Material Identification (PMI) is required for alloy materials (not including carbon steel). PMI shall include all alloy components and welds. PMI testing shall be at the final assembly operation when parts are accessible for testing (prior to painting) and will be uniquely identified for, or installed on, the job. If a component will be inaccessible after installation but is uniquely identified for the job, then as an option, PMI testing can be performed at any time throughout the manufacturing process. In wet H2S services, manufacturer shall identify parts that require hardness verification to meet NACE. Manufacturer shall submit for approval a PMI procedure for alloy parts that indicates the type and manufacture of test equipment, personnel qualifications, materials to be tested, components to be tested, and documentation methods.

5.12.1.2 (Add) Twelve percent chrome castings shall be per ASTM A487, Grade CA6NM. Austenitic stainless steel shall be per ASTM A351 with liquid penetrant examination to S.6. Monel Castings shall be per ASTM A494 grade M-30C with weldability test S.2. and liquid penetrant examination S.5.

5.12.1.5 (Substitute) The vendor shall specify the optional tests and inspections procedures that are necessary to ensure that materials are satisfactory for the service.

5.12.1.8 (Substitute) The vendor shall furnish material certificates that include chemical analysis and mechanical properties for the heats from which the material is supplied for pressure containing castings, forgings and plate, as well as impellers, and shafts. Unless otherwise specified, piping nipples, auxiliary piping components, and bolting are excluded from this requirement.

5.12.1.15 (New) Unless otherwise specified, cast iron shall not be used as an impeller wear ring material.

5.12.2 Castings

5.12.2.2 (Add) Chaplets in casings other than cast iron that are not completely fused into pressure castings or other defects shall be replaced by weld metal equivalent to the casing composition. No other repair method is permitted. Casings shall be heat treated following any major repairs.

5.12.2.3 b) (Revise) Repaired iron castings are only permitted in water service.

5.12.2.5 (Substitute) Casting repair procedures and weld procedures for all major weld repairs for repairs made in the vendor’s shop shall be submitted to the Purchaser for specific approval prior to making repairs. Major weld repairs include the following:

a. Any repairs to cast iron components.

b. Repairs required to correct a hydrostatic test defect.

c. Any repairs where the excavated area exceeds 10 square inches.

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d. Any repair where the depth of the excavated area exceeds 20% of wall thickness or 1.0 inch, whichever is smaller.

5.12.4 Low Temperature Service

5.12.4.3 (Substitute) Pressure casing components, either cast, forged, or welded, shall meet the following impact requirements:

CET (oF) Maximum Casing Working Pressure

Impact Requirements (1)

≤ 20 oF All 15/12 ft-Ibf

≥ 20 oF to < 60 oF > 1000 psi 15/12 ft-Ibf

≥ 20 oF to < 60 oF ~1000 psi None

≥ 60 oF All None

(1) In the notation 15/12, the first number is the minimum average energy of the three specimens while the second number is the minimum for any one specimen in the impact determination.

a. The minimum CET for any part of a casing shall apply to the entire casing.

b. No impact tests are required for a particular pressure containing component if the maximum casing working pressure generates a stress less than 25 percent of the minimum specified yield stress for the material as determined by the Manufacturer.

● c. All impact test details shall be approved by the Owner's Engineer.

5.13 Nameplates and Rotation Arrows

5.13.5 (New) Nameplates and rotation arrows (if attached) shall be of austenitic stainless steel or nickel-copper alloy (Monel or its equivalent). Attachment pins shall be of the same material. Welding is not permitted.

6.0 ACCESSORIES

6.1 Drivers

6.1.1 ● (Add) Electric motors shall generally comply with the following Site Technical Practices (EPs) and the associated data sheets depending on their type and size and the Electrical Area Classification that they are to be installed in. These guidelines only apply for motors driving pumps with speeds of 900 RPM or higher. For slower speed pumps, synchronous motors per EP 13–3–3 may be the preferred motor type and the Owner should be consulted. The following guidelines are offered to assist the pump OEM in selection of the proper motor design specification. However, the Owner's Electrical Engineer should be consulted to verify the selection before quoting the motor. In every case, the associated EP Motor Data Sheets shall be fully completed before quoting a motor.

6.1.1.1 ● (New) For electric motors installed in Class 1, Division 1 locations, the following guidelines shall apply. Motors 200 HP and less shall be explosion-proof and certified for such use by an approved body such as UL or CSA, and shall comply with EP 13–3–4. Motors over 200 HP shall generally be force ventilated and shall comply with EP 13–3–2 as indicated by the Owner.

6.1.1.2 ● New) For electric motors installed in Class 1, Division 2 locations or Unclassified locations, the following guidelines shall apply. Motors 200 HP and less shall generally be TEFC enclosed and shall comply with EP 13–3–1. Motors over 200 HP shall comply with EP 13–3–2 as indicated by

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the Owner. The enclosure for motors over 200 HP may be TEFC, WP-II, TEAAC, TEWAC or other depending on environmental conditions in the area where the motor is to be applied.

6.1.1.3 ● (New) The Owner's Electrical Engineer should be consulted for guidance as to which motor EP is to be used, and which motor enclosure and motor features should be included and specified on the motor data sheets that accompany the EPs.

6.1.1.4 ● (New) Electric motors in Variable Speed applications require special engineering considerations. These motors shall be purchased as part of a packaged system including the motor and the variable frequency drive controller. The Owner's Electrical Engineer and the drives system supplier should be included in discussions regarding the application and specifications and requirements. The electric motor shall be suitable for installation on the Variable Frequency Drive.

6.1.3 (Substitute) For pump rated BHP under 250, motors shall be sized for end of curve BHP for rated impeller and specific gravity without including the motor service factor above 1.0. An alternate quote is required when end of curve BHP exceeds 150% of the pump rated BHP. For pump rated BHP of 250 and greater, motors shall be sized for 110% of pump rated BHP for rated impeller and maximum specific gravity without including the motor service factor above 1.0.

6.1.8 (Substitute) For pump rated BHP under 250, steam turbines shall be sized for end of curve BHP for rated impeller and specific gravity. An alternate quote is required when end of curve BHP exceeds 150% of the pump rated BHP. For pump rated BHP of 250 and greater, steam turbines shall be sized for 110% of pump rated BHP for rated impeller and maximum specific gravity. Steam turbines shall conform to:

EP 6–3–1 General Purpose Steam Turbines

EP 6–3–2 Special Purpose Steam Turbines

6.1.11 (Add) Drivers shall be mounted and aligned to the pump with tolerances per API RP 686 Section 5.4.5 prior to shipment.

6.2 Couplings and Guards

6.2.2 a (Substitute) Flexible elements shall be stainless steel

6.2.2 f ● (Add) Unless otherwise specified, coupling shall be Kopflex KD-2.

6.2.2.g (New) Coupling hubs shall be profiled if needed to allow removal of bolts without removing hub(s) from the shaft. Vendor must confirm that any hub profiling does not reduce the torque or power rating of the coupling below the requirements of the application.

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6.2.3 (Substitute) Couplings operating at speeds greater than 1850 RPM but less than or equal to 3800 RPM shall be component balanced to ISO 1940-1 G1 (equivalent to 4 W/n in USC terminology). All machining of components, except keyways of single keyed hubs, shall be completed before balancing. Two-plane balancing is preferred; however single-plane balancing may be used on hubs.

6.2.4 Delete.

6.2.6 (Add) Keys shall be flush with the face of the hub and any portion of the key protruding beyond the hub shall be profiled to the shaft.

6.2.11 Delete.

6.2.14 a (Revise) Change last sentence to read: Allowable access dimensions shall comply with ASME B15.1.

6.2.14 c (Substitute) Guards shall be fabricated from solid sheet or plate with no openings. Guards fabricated from expanded or perforated sheet materials may be used if the size of the openings does not exceed 0.375 in (10 mm). Material shall be at least 16 gage. Guards shall be constructed of non-sparking materials, preferably aluminum. Guards shall have perforated opening for inspection of the coupling flex element. Openings shall not exceed 0.375 in..

6.3 Baseplates

6.3.2 (Add) Baseplate deckplate shall completely cover the entire baseplate.

6.3.3 (Substitute) Mounting pads shall be provided for the pump and all drive train components. The pads shall be larger than the foot of the mounted equipment to allow leveling of the baseplate in two planes, using a Starrett 98 machinist level, without removal of the equipment. The pads shall be fully machined flat and parallel. Corresponding surfaces shall be in the same plane (coplanar) within 0.001 inch per foot of distance between the pads. Prior to mounting equipment, the mounting pads shall be checked for level and coplanar at the pump manufacturer’s shop in relaxed state (non-clamped) using the provided base plate jack screws. The tolerance for levelness on each individual pad shall be 0.002 inches per foot. The results shall be recorded and included in the final QA/QC document pacakge.

Corresponding Pads – Are the surfaces that support a given single piece of equipment. Example(s): OH2 pump has pads, BB2 – has 2 pads, BB3 – has 4 pads.

Co-Planarity – Condition of two or more surfaces having all the elements in one plane. Co-planarity tolerance specifies a tolerance zone between two or more surfaces

Installed baseplate flatness can be affected by transportation, handling, and installation procedures beyond the vendor’s scope. Installation practices in EP 6–8–1 and API RP 686 should be followed for field installation.

6.3.4 (Add) Shims shall be commercial pre-cut stainless steel shims with no more than six (6) shims per pack. Vendor shall provide thick ground washers for driver hold down bolts.

6.3.14 (Revise) Revise first sentence to read: Transverse and axial alignment positioning jackscrews shall be provided for drive train components on all pumps to facilitate transverse horizontal and longitudinal adjustments. Rabbet fits shall not be used on vertical drivers for alignment.

6.3.17 (Substitute) Substitute first paragraph with: Unless otherwise specified, the Vendor shall commercially sandblast, in accordance with SSPC SP6, all grout contact surfaces of the baseplate. After sandblasting, grout contact surfaces shall be coated with an epoxy grout compatible primer. The Dry Film Thickness (DFT) of the primer shall be 3.0 to 3.7 mils. Vendor shall submit primer specifications to Purchaser for approval.

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6.4 Instrumentation

6.4.3 (New) Stainless steel tags with instrument identification numbers must be provided for primary and secondary seal flush instrumentation and relief valves.

6.5 Piping and Appurtenances

6.5.1 General

6.5.1.1 (Add) Note: API 610 references API 682 and ISO 10438 (API 614) for auxiliary piping systems. Both of these standards require adherence to ISO 15649 (ASME B31.3).

6.5.1.2 e ● (New) Seal flush piping (see API 682 Section 8 Accessories). Note: API 682 allows both tubing and piping. Purchaser shall determine whether piping or tubing is to be furnished for seal flush systems. Note: Only welded piping systems are required to be hydro tested by ISO 10438.

6.5.1.2.1 (Add) Table H.5 is the minimum requirements for auxiliary piping materials. API Table H.2 defines the piping material requirements.

Table H.5 Note (a) (Substitute) Pipe nipples welded to the casing should not be more than 6 inches in length and shall be a minimum of schedule 160 seamless.

Table H.5 ● Tube fittings (Substitute) Compression fittings to be specified by the purchaser.

6.5.1.9 (New) During assembly of the system before testing, each component (including cast-in passages of these components) and all piping and appurtenances shall be cleaned chemically or by another appropriate method to remove foreign materials, corrosion products, and mill scale.

6.5.1.10 (New) All orifice plates shall be installed in flanged connections and have a tab extending from the flange where they are installed to indicate their location. The orifice size and flange rating shall be stamped on the exposed portion of the tab.

6.5.2 Auxillary Process Fluid Piping

6.5.2.8 (Substitute) Piping containing flammable or hazardous fluids shall be flanged. Socket-welded unions are not permissible.

6.5.2.9 ● (New) Balance lines shall be flanged to facilitate removal and inspection. Provision for balance line flow measurement shall be provided if specified by the purchaser.

6.5.2.10 (New) All auxiliary piping shall be fitted so that piping strain is minimized on any component, including mechanical seals. The Purchaser’s Inspector may request a fit check at his/her discretion.

6.5.2.11 ● (New) Seal reservoirs are piping components and shall be designed, fabricated, and inspected to ISO 15649 (ANSI B31.3). Purchaser shall determine any ASME VIII requirements.

7.0 INSPECTION, TESTING AND PREPARATION FOR SHIPMENT

7.1 General

7.1.4 c (Add) The notification shall include raw hydraulic and vibration test data, and completed curves of the specified tests.

7.2 Inspection

7.2.1 General

7.2.1.1 g (New) Purchasing specifications for items on the bill of materials on recommended spare parts list.

7.2.1.5 (New) Inspection shall include verification of equipment dimensions, compliance with baseplate machining tolerances, examination of test data and checking preparation for shipment. For services

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with pumping temperatures 500 oF or higher, the Inspector shall verify that the internal clearances conform to 5.7.4

7.3 Testing

7.3.1 General

7.3.1.1 (Substitute) Performance and NPSH tests shall be conducted using the methods of HI 1.6 (for centrifugal pumps) or HI 2.6 (for vertical pumps), except that efficiency shall be for information only and not rating. Performance tolerances shall be in accordance with Table 14.

7.3.3 Performance Test

7.3.3.1 (Add) All pumps shall be operated for at least one hour at rated speed and capacity, prior to the performance test. Unless otherwise specified by the Owner’s Engineer, performance testing shall be witnessed if any of the following are met:

a) Discharge pressure > 1000 psig

b) Differential head > 650 ft

c) Driver Horsepower > 200 HP

7.3.3.3.a) Modifiy the 3rd item of the list as follows:

3) normal flow/capacity

7.3.4 Optional Tests

7.3.4.2 NPSHr Test

(New) NPSHr test is required when the margin between the specified NPSHa and quoted NPSHr at the rated capacity is less than 5 feet. For BFW pumps, the NPSH margin should be larger and be determeind at the Owner’s Engineer’s discretion. If a NPSHr test is required, it shall be witnessed when a witness performance test is required per 7.3.3.1.

7.3.4.2.1 (Revise) Delete “If specified”.

7.3.4.8 ● (New) If specified, the seal chamber pressure shall be measured at each point during the performance test. The Vendor shall ensure that the measured seal chamber pressures, when corrected for rated suction pressure and specific gravity, are consistent with those assumed in designing the mechanical seal. Corrective steps needed to improve the seal design or seal chamber conditions shall be mutually agreed upon by the Vendor and the Owner’s Engineer.

7.4 Preparation for Shipment

7.4.3.2 (Substitute) Exterior surfaces, except for machined surfaces, shall be given one coat of primer suitable for casing temperature and outdoor installation. After testing and final assembly, at least one coat of manufacturer’s standard paint shall be applied. The paint shall not contain lead or chromates. Stainless steel parts shall not be painted. The undersides of baseplates shall be prepared for epoxy grout per Paragraph 6.3.17.

7.4.3.3 (Add) The rust preventative shall be removable with mineral spirits or any Stoddard solvent.

7.4.3.6 Delete.

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8.0 SPECIFIC PUMP TYPES

8.1 Single-stage Overhung Pumps

8.1.1 (Add) Impeller tip speed of the maximum diameter impeller on OH2 type pumps shall be no more than 205 ft/sec (This equates to 15 inch diameter at 3600 RPM). Pumps shall meet the requirements of 5.6.9 and 5.9.3 regardless of impeller diameter.

8.1.2 (Add) OH3 type pumps shall not be used for services greater than 200 HP or 300oF.

8.1.2.2 ● (Add) OH3 pumps shall be designed with a mounting plate. The top and bottom surfaces of the mounting plate shall be flat within 0.002 inch of the surface planes. Pumps shall be provided with a separate sole plate for bolting and grouting to the foundation. The top surface of the plate shall be flat within 0.002 inch of the surface plane. The grout contact surface of the plate shall be cleaned and primed per Paragraph 6.3.17. The sole plate shall be provided with at least four vertical leveling screws. The sole plate shall not be provided with a grout hole. If the purchaser specifies the pump to float with the piping, then the vendor shall design mounting plate for controlled movement and pump over turning prevention.

8.1.2.9 (New) Unless otherwise specified, auxiliary piping systems (Plans 52 and 53) shall not be mounted nor piped on pumps. Tubing shall be supplied and installed by the owner or installation contractor.

8.1.2.10 (New) Motor transverse alignment positioning jackscrews shall be provided at four locations, 90 degrees apart.

8.1.2.11 (New) Impeller tip speed of the maximum diameter impeller on OH3 type pumps shall be no more than 205 ft/sec. Pumps shall meet the requirements of 5.6.9 and 5.9.3 regardless of impeller diameter.

8.1.4 (New) OH4 and OH5 style pumps are not permitted.

8.2 Between-bearings Pumps (Types BB1, BB2, BB3, and BB5)

8.2.1 Pressure Castings

8.2.1.2 (Substitute) Pumps for service temperatures below 250oF may be foot mounted, if approved by the Owner’s Engineer.

8.2.2 Rotor

8.2.2.3 (Substitute) Rotors with shrink-fit impellers shall have mechanical means to limit movement in the direction opposite to normal hydraulic thrust to 0.75 mm (0.030 inch) or less.

8.2.4 Dynamics

8.2.4.2 Rotor Balancing

8.2.4.2.1 (Substitute) All rotors shall be two plane dynamically balanced at low speed to the balance grade in Table 17. The sequence of rotor assembly and balance correction shall follow ISO 11342. For balancing, the rotor does not include the pump half-coupling or the rotary units of the mechanical seals.

Table 17 (Revise) Rotor balance for interference component fit rotors for all speeds shall be G1 (4W/n).

8.2.5 Bearings and Bearing Housings

8.2.5.2.4 (Revise) Replace fifth paragraph with: Thrust-bearing sizing and thrust calculations shall be reviewed and approved by the purchaser.

8.2.5.2.4 (Revise) Replace seventh paragraph with: Shop test on water and normal operation in the field (7.3.3.4.b): 93oC (200 oF) or no more than 80 oF rise in temperature, whichever is less.

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8.2.5.2.4 (Substitute) External pressure-lubrication systems shall comply with the requirements of ISO 10438-3 and Figure B.10 and revised Table B.1. Materials of construction for coolers in salt water cooling service shall be as follows:

Item Material Description

Tubes Titanium (6) Tubesheets Carbon steel with Grade 1 titanium cladding on tube side

Baffles, Tie-Rods and Spacers Carbon steel Channel AL-6XN with 1/16 inch corrosion allowance on cylinder and

carbon steel slip-on flanges (5) Channel Cover Carbon steel with Gr. 1 titanium cladding Floating Head Carbon steel with 1/4 inch minimum thickness Inconel 625

weld overlay on tube side (5) Shell Carbon steel

Notes: 1. These requirements assume that the shell is carbon steel with a corrosion allowance that does not exceed 1/8

inch and that the shell side will not be exposed to an electrolyte. 2. The gasket contact surfaces on all channels shall be weld overlaid with Inconel 625 (1/4 inch minimum thickness). 3. The pass partition plates in channels shall be AL-6XN; in floating heads, they shall be Inconel 625. 4. Titanium cladding shall be 1/2 inch minimum thickness after machining for tubesheets and 5/16 inch minimum

thickness after machining for channel covers. 5. Solid Inconel 625 is an acceptable alternative. 6. The grade of titanium and the need for thermal oxidation treatment shall be specified by the Owner's Materials

Engineer. For process temperatures under 200oF, Grade 2 Titanium is acceptable. Tubes shall be anodized or thermally oxidized.

8.2.6 Lubrication

8.2.6.6 (New) Non shaft driven horizontal pumps shall have positive suction heads and suction lines sloped to vent to the reservoir.

8.2.7 Testing

8.2.7.5 (Substitute) If a witness performance test is specified, then hydrodynamic bearings shall be removed, inspected by the purchaser or his representative, and reassembled after the performance test is complete.

8.3 Vertically Suspended Pumps (Types VS1 through VS7)

8.3.2 Pressure Casings

8.3.2.3 (New) Vertical turbine pumps shall have columns and bowls of the bolted design.

8.3.3 Rotors

8.3.3.1 (Substitute) Impellers shall be fully enclosed and constructed as single piece castings. Fabricated impellers require the purchaser’s approval.

8.3.4 Wear Parts and Running Clearances

8.3.4.3 Delete.

8.3.5 Dynamics

(Add) All VS pumps greater than 50 HP, shall have the natural frequency of the driver support calculated, and submitted with the final documentation. All VS pumps greater than 700 HP

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regardless of speed, shall have the discharge head and/or motor stand natural frequency checked by bolting to vendor shop floor and rung with hammer to determine if vendor's analysis is accurate. Vendor to submit certificate with natural frequencies calculated, and those measured.

8.3.8 Accessories

8.3.8.3 Mounting Plates

8.3.8.3.1 (Substitute) The mounting plate for double casing pumps shall be separate from the main body flange and located sufficiently below it to permit the use of through-bolting on the body flange (see Figure 33) The mounting plate shall have a 0.750 inch flanged pipe connection to vent the space between the outer pump casing and the foundation. The plate shall have rounded corners. The plate shall be attached to the outer pump casing with a continuous weld. The top and bottom surfaces of the mounting plate shall be flat within 0.002 inch of the surface planes.

8.3.8.3.3 (Substitute) Pumps shall be provided with a separate sole plate for bolting and grouting to the foundation (see Figure 33). This plate shall be machined on its top surface for mounting of the discharge head, can, or motor support. The top surface of the plate shall be flat within 0.002 inch of the surface plane. Corners shall be rounded to 2 inch radius.

8.3.8.4 Piping and Appurtances

(Add) Unless otherwise specified, auxiliary piping systems (Plans 52 and 53) shall not be mounted on pumps nor piped by vendor. Installation contractor or owner shall provide tubing and pipe to pots / panels.

8.3.9 Testing

8.3.9.1 (Add) The suction can shall be mounted to the discharge head to verify alignment of bolt holes.

8.3.9.2 (Add) Note: purchaser shall consider resonance testing on critical pumps or pumps over 8 feet long.

8.3.10 Single-Case Diffuser (VS1) and Volute (VS2) Pumps

8.3.10.5 (Substitute) Line shafting shall have High Velocity Oxygen Fueled (HVOF) tungsten carbide coating under each bushing.

8.3.13 Double-Case Diffuser (VS6) and Volute (VS7) Pumps

8.3.13.2 (Substitute) Bowls and column pipe shall be hydrostatically tested with liquid at a minimum of 1.5 times the maximum differential pressure developed by the bowl assembly. Hydrostatic testing shall be conducted in accordance with the requirements of 7.3.2

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9.0 VENDOR’S DATA

9.1 General

9.1.4 (New) In addition to hard copies, all information shall be supplied in electronic format (two CD’s). Files shall be submitted in Microsoft Excel, MS Word or PDF format.

9.2 Proposals

9.2.2 Drawings

9.2.2.1 c (Add) Orifice drill size shall be indicated on the seal piping drawings.

9.2.3 Technical Data

9.2.3 f (Substitute) A list of spare parts, including price and delivery information, for startup and normal maintenance purposes (see Table 18). All parts shall be quoted as prepared for long term storage of four (4) years or more, under roof, unheated. Any long term storage maintenance requirements shall be identified. Proposed method of protection from corrosion during shipment and subsequent storage shall be provided.

9.2.3 q (New) Wear ring clearances and diameters for proposed pumps with pumping temperature 500ºF and higher.

9.2.3 r (New) The maximum dynamic and static pressure ratings of the mechanical seal.

9.2.3 s (New) Design details of all coolers on a TEMA datasheet.

9.2.3 t (New) Minimum case thickness and amount of corrosion allowance.

9.2.4 Curves

(Add) Quoted efficiency and power shall take into account the increased clearance required for hot pumps.

9.2.5 Options

(Revise) Delete the words “If specified”.

9.3 Contract Data

9.3.2 Drawings and Technical Data

9.3.2.3 (Add) Cross-sectional dimensioned drawings of the stuffing box, seal, gland, shaft sleeve, and proposed flushing arrangement for the mechanical seal shall be provided.

9.3.6 (New) Performance Guarantee

The equipment shall be guaranteed for satisfactory mechanical performance at startup, shutdown, part-load operations, and all operating conditions specified on the data sheets. The pump hydraulic performance shall be guaranteed for the rated operating conditions as specified on the data sheets.

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10.0 TABLES

(REVISED) TABLE B.1 — LUBRICATING-OIL SYSTEM SCHEMATIC

ISO 10438-3:- Subclause Note/Option Comments

3A-1 Minimum Requirements for General Purpose Oil Systems

Add

TI, FI on oil return lines from pump (and driver)

3A-2 Reservoir Option 1 A level switch is not required Option 2 A temperature indicator with thermowell is required

Add An electric immersion heater is required Add

Additional connections are required for: 1. Shaft-driven oil pump relief valve return (not required with integral relief valve) 2. Motor-driven oil pump relief valve return (not required with integral relief valve) 3. System PCV return 4. Aux. oil pump to have independent suction w/ strainer

Option 5 One tapped grounding lug is required Option 6 Gauge glass may be armored and extended

Add Add Add Add Add

A vent (breather) with screen is required. The reservoir shall have a sloped bottom. A flanged drain connection with valve and blind at least 5 cm in size shall be included. A level glass shall be provided in accordance with ISO 10438-3. The return line from the system PCV shall be located below the minimum operating oil level.

3A-3 Pumps Add A 100% capacity motor-driven auxiliary pump is required. Auxiliary pumps to be horizontally mounted and shall be steel housing, IMO, screw type with flanges

Option 2 Block valves are not required Option 3 A pre/post-lubricating oil pump is not required Option 4 Pressure switches are required for low-pressure trip, alarm and aux. pump start Option 5 The pressure transmitter is not required

Add

The pressure switches shall be located in accordance with ISO 10438-3-, Figure A.5

Option 6 Motor drive main lube oil pump. 3A-4 Pumps and Coolers (and filters)

Add One oil cooler is required Add Duplex filters are required Add A three-way constant temperature control valve with bypass line is optional.

Option 4

A two- or three-way variable temperature control valve with bypass line is not required

Option 5

A temperature switch is required. Temperature switch is not represented in ISO 10438-3:—, Figure A.5.

Option 6

A single transfer valve with cooler and filter in parallel with separate TCV is not required. Valve is not represented in ISO 10438-3:-,Figure A.5.

Add A pressure differential indicator is required Add Add Add

A single transfer valve for the duplex filters is required. The replaceable filter shall be in accordance with ISO 10438-3. Temperature indicator is required.

3A-5 Pressure Control Add A full flow relief valve is required. Option 2 A back-pressure control valve; direct-acting is not required Option 3 Block valves around the PCV/regulator are not required Option 4 A globe bypass valve is not required

“Option” means an optional item as specified; “Add” means a requirement additional to those given in ISO 10438-3.

6_1_1

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