240k-c2-es-55-002-2.pdf

Z:\103_PROJ_ADMIN\109_ENG DOCS\109.6R_ES\55-Mechanical\240K-C2-ES-55-002_Paint\240K-C2-ES-55-002-2.doc

SOCIEDAD MINERA CERRO VERDE S.A.A.

CERRO VERDE PRODUCTION UNIT EXPANSION

PROJECT NO. A6CV

PAINT EQUIPMENT STANDARDS

DOCUMENT NO. 240K-C2-ES-55-002 REV. 2

30 MARCH 2012

®

Z:\103_PROJ_ADMIN\109_ENG DOCS\109.6R_ES\55-Mechanical\240K-C2-ES-55-002_Paint\240K-C2-ES-55-002-2.doc

Sociedad Minera Cerro Verde S.A.A. Document No. 240K-C2-ES-55-002 Cerro Verde Production Unit Expansion Revision 2 Project No. A6CV


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Table of Contents

1. GENERAL.......................................................................................................................................................5 1.1 Summary...............................................................................................................................................5 1.2 References............................................................................................................................................6 1.3 Submittals .............................................................................................................................................9 1.4 Quality Assurance.................................................................................................................................9 1.5 Handling and Transportation ................................................................................................................9 1.6 Environmental Requirements ...............................................................................................................9 1.7 Color Systems.....................................................................................................................................10

2. PRODUCTS ..................................................................................................................................................10 2.1 Acceptable Manufacturers ..................................................................................................................10 2.2 Same Product and Manufacturer........................................................................................................10 2.3 Coating Systems - Shop Fabricated Steel/Mechanical Equipment....................................................11 2.4 Coating Systems - Field Fabricated Steel and Structural Steel .........................................................11 2.5 Coating Systems - Piping ...................................................................................................................11 2.6 Coating Systems – Shop Fabricated Tank Interior (Immersion Service) ...........................................12 2.7 Coating Systems – Field Fabricated Tank Interior (Immersion Service)............................................12 2.8 Coating Systems – Shop Fabricated Tank Interior (Fuel and Oil Service).........................................12 2.9 Coating Systems – Field Fabricated Tank Interior (Fuel and Oil Service) ........................................13 2.10 Mixing and Thinning ........................................................................................................................13 2.11 Paint Products Delivery, Storage and Handling..............................................................................13

3. EXECUTION .................................................................................................................................................13 3.1 General ...............................................................................................................................................13 3.2 Scheduling of Work.............................................................................................................................14 3.3 Preparation .........................................................................................................................................15 3.4 Application ..........................................................................................................................................16 3.5 Protection............................................................................................................................................17 3.6 Cleaning..............................................................................................................................................17 3.7 Field Touch-up ....................................................................................................................................17 3.8 Jobsite Environmental Conditions ......................................................................................................18 3.9 Inspection and Quality Control............................................................................................................18 3.10 Safety ..............................................................................................................................................19

4. ATTACHMENTS...........................................................................................................................................20




1. GENERAL

1.1 Summary

A. Scope of Specification

This specification describes the minimum requirements for the supply of material and labor for shop and/or field painting to the following:

1. Structural and miscellaneous steel

2. Fabricated structural and miscellaneous steel

3. Fabricated mechanical and structural plate work, for example, bins, hoppers, baseplates, chutes, tanks, pump boxes and launders

4. Fabricated piping components, for example, pipe spools, fittings and supports

B. Work Not Included

1. Paint for architectural building materials and finishes (interior)

2. Paint for high temperature applications where temperature exceeds paint manufacturers maximum limit

C. Related Documents

1. The following documents prescribe items of related Work:

240K-C2-ES-55-001 Standard Requirements for Mechanical Equipment

240K-C2-ES-55-004 Color Coding for Material Delivery (to come)

240K-C2-CS-50-008 Pipe Markers for Commodity and Safety Identification

2. Coordinate work prescribed by this specification with work prescribed by the above listed documents.

D. Related Work

1. When advised in an equipment specification (for example: specification for overhead cranes) to follow manufacturer standard painting procedures, the Supplier shall adhere, where practical, to the colour scheme presented in Attachment 1.

2. For custom-built and packaged mechanical equipment, where manufacturer does not have a standard painting procedure, the Supplier shall comply to the painting systems and colour scheme presented in this specification.

E. Terminology

1. Buyer shall mean Sociedad Minera Cerro Verde.

2. Supplier shall mean fabricator and/or supplier of pipe, equipment, structural steel, and other items to be painted.

3. Contractor shall mean the painting contractor.

4. Paint manufacturer shall mean the manufacturer of the specified paint.




5. Application data shall mean application instructions, recommendations and guidelines described in the published literature of the paint manufacturer, referenced industry standards and any specific requirements noted in this specification and any drawings issued to the contractor.

6. Coat shall mean one full layer of the specified material applied to the specified thickness. Multiple passes including initial mist pass are necessary to form a coat. A mist pass is not considered a full coat. The cost of a coat shall include the cost of mist pass(es).

7. Mist coats are the same as mist passes.

8. DFT (Dry Film Thickness) shall mean the thickness of the dry film of the coating. In the absence of a specified range, the value stated shall mean a minimum value and the maximum value shall not be more than 1.5 times the stated value.

9. DFT measurement shall mean the average value of three readings recorded by dry film thickness gage. The readings shall be within a 150 mm radius and evenly spread out from a given spot.

10. Insulated surfaces shall mean steel surfaces which will be insulated.

11. Uninsulated surfaces shall mean steel surfaces which will not be insulated.

12. Operating temperature shall mean the maximum temperature of the substrate surface exposed to weather (indoor and outdoor) during operating conditions. For example, operating temperature of refractory lined equipment for painting purposes shall be the temperature of the metal surface exposed to the weather during operation. The steam out temperature of piping and equipment shall not be considered as a basis for paint system selection unless specifically instructed in writing by the Owner and acknowledged in writing by FLUOR.

13. Piping shall mean piping, pipe fittings, valves, pipe supports and accessories unless a particular item and/or size limitation is stated.

14. Carbon steel shall mean carbon steels including alloy steels with chromium content of 9.25% or less.

15. Stainless steel shall mean austenitic stainless steel such as Type 304, 316, 321 and 347.

16. Structural steel shall mean structural steel other than the structural steel which is an integral part of fabricated equipment by the Supplier. (Example: Structural steel of a boiler structure shall be painted in the same manner as the boiler's other surfaces.)

17. Tanks shall mean field fabricated above ground storage tanks (AST).

18. Work shall mean all labor, supervision, installed and consumable materials, services, equipment, instruments, tools, and each and every item of expense necessary for preparing the surfaces for paint application, application of paint materials, repairs, quality control, and cleanup thereafter.

1.2 References

A. Referenced publications within this specification shall be the latest revision, unless otherwise specified, and applicable parts of the referenced publications shall become a part of this specification as if fully included.




B. Applicable Codes and Standards

1. List of Standards

ASTM American Society for Testing and Materials

ASTM E 337 Standard Test Method for Measuring Humidity with a Psychrometer (the measurement of wet and dry bulb temperatures)

ASTM D 610 (ISO 4628-3) Standard Test Method for Evaluating Degree of Rusting on Painted Steel Surfaces

ASTM D 660 Standard Test Method for Evaluating Degree of Checking of Exterior Paints

ASTM D 661 (ISO 4628-4) Standard Test Method for Evaluating Degree of Cracking of Exterior Paints

ASTM D 714 (ISO 4628-2) Standard Test Method for Evaluating Degree of Blistering of Paints

ASTM D 3359 Standard Test Methods for Measuring Adhesion by Tape Test

ASTM D 4417 (ISO 8503-2) Standard Test Method for Field Measurement of Surface Profile of Blast Cleaned Steel

ASTM D 5162 Standard Practice for Discontinuity (Holiday) Testing of Non-conductive Protective Coating on Metallic Substrates

ISO International Organization for Standardization

ISO 8501-01 Preparation of steel substrates before application of Paints and related products – Pictorial surface preparation standard for painting steel surfaces

ISO 8502-3 Preparation of steel substrates before application of paints and related products – Tests for the assessment of surface cleanliness, assessment of dust on steel surfaces prepared for painting

ISO 8503 Preparation of steel substrates before application of paints and related products – Surface roughness characteristics of blast-cleaned steel substrates

ISO 8504-2 Preparation of steel substrates before application of paints and related products – Surface preparation methods, abrasive blast-cleaning

ISO 8504-3 Preparation of steel substrates before application of paints and related products – Surface preparation methods, hand and power tool cleaning

ISO 9001 Quality Management Systems – Requirements

ISO 12944 Part 1 and 2: Corrosion Protection of Steel Structures by Protective Paint Systems

NACE National Associated of Corrosion Engineers

NACE RP-02-87 Field measurement of surface profile of abrasive blast cleaned steel surfaces using a replica tape




SSPC Society for Protective Coatings

SSPC-SP COM Surface Preparation Commentary for Steel and Concrete Substrates

SSPC-SP1 Solvent Cleaning

SSPC-SP2 Hand Tool Cleaning

SSPC-SP3 Power Tool Cleaning

SSPC-SP5 White Metal Blast Cleaning

SSPC-SP6 Commercial Blast Cleaning

SSPC-SP10 Near-white Blast Cleaning

SSPC-SP11 Power Tool Cleaning to Bare Metal

SSPC-VIS-1 Visual Standard for Abrasive Blast Cleaned Steel

SSPC-VIS-3 Visual Standard for Power and Hand Tool Cleaned Steel

SSPC-PA-1 Guide to Shop, Field and Maintenance Painting

SSPC-PA-2 Measurement of Dry Paint Thickness with Magnetic Gages

SSPC-PA-3 A Guide to Safety in Paint Application

SSPC-AB-1 Mineral and Slag Abrasives, Abrasive Specification No. 1

2. Other References

ANSI American National Standards Institute

Z535.1 American National Standard for Safety Colors (formerly Z53.1 Safety Color Code for Marking Physical Hazards)

CGSB Canadian General Standards Board

CGSB 85-GP-16M Painting Galvanized Steel

OSHA Occupational Health and Safety Administration

Standard 1910.144 Safety color codes for marking physical hazards

NFPA National Fire Protection Association

NFPA 704 Standard System for the Identification of the Hazards of Materials for Emergency Response

Peruvian Standards

DS No. 055-2010-EM Reglamento de Seguridad y Salud Ocupacional y otras medidas (Regulation of Occupational Safety and Health and other measures)

2008 Guia de Respuesta en Caso de Emergencia (2008 Response Guide In Case of Emergency)

C. Material, application and testing procedures shall conform to this specification and Section 1.1C Related Documents as applicable. Equivalent foreign standards are subject to Buyer review and approval upon written request by Supplier.




1.3 Submittals

A. Supplier shall submit data on abrasive type and particle size, for abrasive blasting media.

B. Supplier shall submit product data indicating paint systems to be applied and surfaces to be painted, including analysis (by weight) of solvent, binder and pigment, and mixing, thinning, and application recommendations.

C. Coating manufacturer's requirements, including application procedures for coating materials, shall be in writing and become part of this specification and shall be followed in detail. All safety precautions recommended by the coatings manufacturer shall be strictly adhered to at all times when work is in progress.

D. Supplier shall submit either colour samples or colour chips, based on the colour scheme shown in Attachment 1, and manufacturer's paint specification for approval.

1.4 Quality Assurance

A. Supplier shall review the specifications and the accompanying plans with the coatings manufacturer. Inconsistencies between these specifications and the manufacturer's standards shall be submitted to Buyer prior to application of coating materials. Unless notified to the contrary, the specifications shall be considered in compliance with the manufacturer's standards. Where recommendations, instructions and guidelines in the paint application data are given in permissive language such as “may”, “should” and “recommended”, compliance with those recommendations, instructions and guidelines shall be considered mandatory unless otherwise instructed by Buyer.

B. Coatings applicator shall be presently engaged in coatings applications and shall have a minimum of 3 continuous years experience in painting and coating application of comparable scope using materials similar to those specified.

C. Coatings applicator shall be certified by the SSPC as a qualified coatings applicator.

D. Buyer reserves the right to perform inspections at any time during the work.

1.5 Handling and Transportation

A. Handling and transport of painted items shall be done after sufficient cure time such that the protective coating is not damaged. Damage to coatings caused by earlier transport and handling shall be repaired by the supplier at no additional charge.

B. Supplier shall handle coated steel with nylon slings.

C. Supplier shall transport coated steel on wood dunnage, and protect from damage during transport.

D. Supplier shall conform to the requirements provided in DS No. 055-2010-EM, Reglamento de Seguridad y Salud Ocupacional y otras medidas.

1.6 Environmental Requirements

A. Paints and protective coatings shall meet local environmental requirements for Volatile Organic Content (VOC).

B. Working conditions shall comply with the paint manufacturer’s and environmental requirements.




C. Contractor will comply with all environmental conditions prior to the disposal of contaminated products such as containers, thinners, used rags and others.

D. Contractor must be prepared to prevent any spills of paints or solutions.

1.7 Color Systems

A. Piping system identification and colors shall be as defined in Piping Line Class specification- 240K-C2-CS-008 Pipe Markers for Commodity and Safety Identification.

B. Safety colors in accordance with the standard of the Mine Safety and Health Administration (MSHA) shall be as follows:

1. Safety Yellow shall be used for designating caution, to mark stumbling, falling or tripping hazards such as protruding parts, curbings, dead ends, handrails, kick plates, ladders, cages and equipment safety guards.

2. Safety Red shall be used to mark instruments used for combating fire, such as fire extinguishers, fire hydrants, fire stations, and others.

3. Safety Green shall be used to mark aid equipment such as dispensaries, medicine cabinets, gas mask containers, respirator containers, safety showers, stretchers, and others.

4. Safety Orange shall be used to promote safety and expose unguarded hazards such as on machines or equipment that might cut, crush, electrocute or otherwise injure workers. Exposed parts such as pulleys, gears or cutting devices shall also be painted safety orange.

5. Safety Purple shall be the basic color for designating radiation hazards.

2. PRODUCTS

2.1 Acceptable Manufacturers

Ameron

DuPont

Mobile Paints

Porter International

Sherwin-Williams

Tnemec Company, Inc.

Valspar Corporation

Carboline

Rust-Oleum

International Paint

2.2 Same Product and Manufacturer

A. Materials specified herein are to establish type and quality. Similar and equal products by one of the listed manufacturers may be submitted to Buyer for review.

B. Supplier shall use products of same manufacturer for each coating system.




C. Coating materials and equipment shall be designed for the surface to be coated: finish coats shall be compatible with prime coats; prime coats shall be compatible with surface to be coated. Tools and equipment shall be compatible with coatings to be applied.

D. Supplier shall vary tints of succeeding coats to permit identification.

2.3 Coating Systems - Shop Fabricated Steel/Mechanical Equipment

A. System 1

Surface Prep: SSPC SP6 Commercial Blast Cleaning

Primer: (Shop Applied) Ameron Amerlock 400, 125 microns DFT

Touch-Up: SSPC SP3 Power tool clean spots and touch up with: Ameron Amerlock 400

Finish Coat: None

2.4 Coating Systems - Field Fabricated Steel and Structural Steel

A. System 2

Surface Prep: SSPC SP6 Commercial Blast Cleaning

Primer: (Shop Applied) Ameron Dimetcote 9 inorganic zinc, 65 microns DFT

Touch-Up: Power tool clean spots and touch up with: Ameron Amerlock 400 (Colour to match primer)

Intermediate: None

Finish Coat: (required only for field fabricated steel) Ameron Amerlock 400, 125 microns DFT

2.5 Coating Systems - Piping

A. System 3

Surface Prep: SSPC SP3 Power Tool Cleaning

Primer: (Field Applied) Ameron Amercoat 5105 fast dry alkyd primer, 75 microns DFT

Touch-Up: Power tool clean spots and touch up with: Ameron Amercoat 5105

Intermediate: None

Finish Coat: Uninsulated Pipe Only-Ameron Amercoat 5450 gloss alkyd enamel 50 microns DFT




2.6 Coating Systems – Shop Fabricated Tank Interior (Immersion Service)

A. System 4

Surface Prep: SSPC SP10 Near White Metal Blast Cleaning

Primer: (Shop Applied) Ameron Amerlock 400 epoxy, 150 microns DFT

Touch-Up: SSPC SP11 Power tool clean spots and touch up with: Ameron Amerlock 400 epoxy primer, 150 microns DFT

Finish Coat: (Shop Applied) Ameron Amerlock 400 epoxy, 150 microns DFT

Colours: White, Ivory, Med Grey

2.7 Coating Systems – Field Fabricated Tank Interior (Immersion Service)

A. System 5

Surface Prep: SSPC SP10 Near White Metal Blast Cleaning

Primer: (Shop Applied) Ameron Amerlock 400 epoxy, 150 microns DFT

Touch-Up: SSPC SP11 Power tool clean spots and touch up with: Ameron Amerlock 400 epoxy primer, 150 microns DFT

Cleaner: (Field Applied) Ameron Prep88

Finish Coat: (Field Applied) Ameron Amerlock 400 epoxy, 150 microns DFT

Colours: White, Ivory, Med Grey

2.8 Coating Systems – Shop Fabricated Tank Interior (Fuel and Oil Service)

A. System 6

Surface Prep: (Bottom Plate & Bottom 1 Meter of Shell) SSPC SP10 Near White Metal Blast Cleaning

Primer: (Shop Applied) Ameron Amercoat 240 epoxy, 125 microns DFT

Touch-Up: SSPC SP11 Power tool clean spots and touch up with: Ameron Amercoat 240 epoxy primer, 125 microns DFT

Finish Coat: (Shop Applied) Ameron Amercoat 240 epoxy, 125 microns DFT




2.9 Coating Systems – Field Fabricated Tank Interior (Fuel and Oil Service)

A. System 7

Surface Prep: (Bottom Plate & Bottom 1 Meter of Shell) SSPC SP10 Near White Metal Blast Cleaning

Primer: (Shop Applied) Ameron Amercoat 240 epoxy, 125 microns DFT

Touch-Up: SSPC SP11 Power tool clean spots and touch up with: Ameron Amercoat 240 epoxy primer, 125 microns DFT

Cleaner: (Field Applied) Ameron Prep88

Finish Coat: (Field Applied) Ameron Amercoat 240 epoxy, 125 microns DFT

2.10 Mixing and Thinning

A. Ingredients shall be thoroughly mixed in any container of coating materials before use (preferably a mechanical mixer), and agitated often enough during application to keep the pigment in suspension.

B. Supplier shall use only thinners supplied by or recommended by coatings manufacturer and comply with the manufacturer's recommendations for thinning quantities and procedures. Any thinning required shall be performed under supervision of an individual acquainted with correct type and quantity.

2.11 Paint Products Delivery, Storage and Handling

A. Supplier shall deliver, store and handle painting material in accordance with all paint manufacturer’s recommendations and instructions in order to minimize the risk of fire, explosions, or other damage that could result from handling of these elements.

B. Supplier shall store unopened paint components in a dry place at 5º C to 35º C temperature, out of direct sunlight, unless manufacturer recommendations are more restrictive. Keep away from heat and flame.

C. Supplier shall adhere to paint manufacturer’s pot life.

D. All containers shall remain closed until required for use.

3. EXECUTION

3.1 General

A. Items Which Do Not Require Painting

The following items do not require surface preparation or painting unless otherwise specified:

1. Non-metallic items such as concrete, glass, plastic, wood, fiber and others

2. Non-ferrous metals such as aluminum, copper, brass, titanium and others

3. Galvanized surfaces except for safety color coding or coating repair




4. Insulation weatherproofing

5. Stainless steel surfaces

6. Surfaces that will be embedded in concrete

B. Items Which Require Protection From Painting

Surfaces which could be damaged by abrasives, dust, or paint overspray shall be protected by wrapping, taping, or other means to prevent damage. Coatings are difficult to remove, once applied. Such surfaces shall include, by way of example, but not limitation, the following;

1. Bearings

2. Conduit

3. Control panels

4. Control valves

5. Coupling

6. Equipment nameplates

7. Expansion joints bellows

8. Fire sprinkler heads

9. Flange and nozzle facing

10. Glass, rubber, gasket materials, etc.

11. Identification tags

12. Instrument glasses and gauge dials

13. Machined surfaces (threads, valve stems, pump and cylinder rods, shafts, etc.)

14. Screws

15. Spring hanger graduation

16. Stainless steel surfaces

17. Valve stems and position indicators

Stainless steel surfaces shall be protected from zinc and aluminum rich coatings. Any accidental over spray of zinc and aluminum, including trace amounts over stainless steel surfaces, must be completely removed.

3.2 Scheduling of Work

Unless otherwise stated in the paint manufacturer’s recommendations and approved by Buyer, painting shall be done when:

A. Pressure testing is complete

B. Ambient temperature is above 10°C

C. Metal surface temperature is at least 2°C above the dew point

D. Relative humidity is less than 85%




E. There is no likelihood of rain within 24 hours after painting

F. Protection of surfaces, not required to be painted, for example, stainless steel, is in place

3.3 Preparation

A. All surface preparation and cleaning procedures shall be in strict accordance with the paint manufacturer’s recommendations as approved by the Buyer.

B. The steel substrate must be clean of all oil, grease, dirt, dust mill scale, rust, flash rust, corrosion products, slats, solvents, chlorides, other chemicals, existing coating and foreign matters.

C. All welds must be smooth and continuous (for example; no skip welds).

D. All weld splatter, buckshot, laminations and slivers must be removed and ground smooth; undercuts and pinholes must be ground smooth and filled with weld metal.

E. All pitting, gouges, scratches and other defects must be repaired either by welding or by filling with repair materials that are compatible with the coating and suitable for the intended service conditions.

F. Burned and sheared edges shall be smoothed. All edge of steel shall be chamfered to prevent cracking of paint film on drying.

G. All surfaces to be coated must be readily accessible.

H. All steel must be blasted to SSPC specified in the tables of Sections 2.3 - 2.5. Defects exposed by blasting must be repaired.

I. Surface preparation shall be visually evaluated by comparison with pictorial standards in accordance with SSPC-PA-2.

J. Removal items, which are in place, but not scheduled to receive paint must be detached; or provide surface applied protection prior to surface preparation and painting operations.

K. All piping and appurtenances shall be covered to prevent grit, sand or sand blasting debris from entering.

L. Supplier shall provide water wash on excessively dirty or rusted surfaces and steam clean oily or greasy surfaces.

M. Supplier shall clean steel surfaces in accordance with SSPC-SP2 Hand Tool Cleaning or SSPC-SP11 Power Tool Cleaning as applicable.

N. Supplier shall employ abrasives to blast clean steel surfaces in accordance with the applicable section of SSPC Standards.

O. The compressed, oil free air used for abrasive blasting shall be cooled after compression and must not have a higher temperature or humidity than the ambient conditions. A “Blotter Test” shall be performed from time to time to confirm that the air is free from oil and excessive moisture.

P. Supplier shall verify surfaces are dry, clean and free of dust, dirt, oil, wax, grease, mortar or other contaminants prior to applications on previously coated surfaces. Remove oil, grease and wax and clean with paint manufacturer recommended non film-forming solvent. Remove rust according to SSPC SP11 and touch up with one coat of primer before applying finish coats.




Q. The blasting equipment shall utilize a sufficient number of oil and moisture separators to provide a clean, dry air supply.

R. All dust and spent abrasive shall be removed prior to coating application by blowing off with clean, dry air.

S. Prior to painting, Contractor shall report to Buyer for any notch type faults or crevices noticed in the material to be painted.

T. Where field conditions do not permit sand blasting as per SSPC-SPC7, the cleaning shall be obtained with electromechanical equipment or, reach the cleaning degree as specified in Sections 2.3 – 2.5 of this specification.

3.4 Application

A. Supplier shall follow all paint manufacturers’ printed directions, including mixing, thinning and application methods, and recommendations of the applicable section of SSPC.

B. Supplier shall ensure that all steel is coated before any flash rusting occurs.

C. Supplier shall ensure that all adjacent areas are protected during painting operations and shall clean or replace overspray areas.

D. Prime and finish coats shall be applied in accordance with paint manufacturer recommendations and with the applicable section of SSPC.

E. Unless noted otherwise, the dry film thickness (DFT) of each coat shall not exceed the specified DFT in Sections 2.3 – 2.5 plus 30% of the specified DFT. The minimum DFT per coat shall be in accordance with SSPC-PA2.

F. Paint shall be applied only within temperature and humidity limits established by the paint manufacturer.

G. Paint shall not be applied to wet or contaminated surfaces.

H. Primer must be applied within 8 hours of the time of blast cleaning.

I. Supplier shall allow minimum curing time as specified by the paint manufacturer before handling the component or applying the subsequent coat of paint.

J. Supplier shall clean primed surfaces of all non-compatible surface residue by use of soft bristle brushes or brooms, compressed air or water prior to application of the finish coat.

K. Structural steel within 50 mm either side of each field weld shall have prime coat only. Machined finish surfaces shall not be painted, but protected against corrosion by application of rust inhibitors prior to field installation.

L. Use of thinners at any stage of the work is prohibited, unless specified by the paint manufacturer.

M. Faying surfaces of structural steel bracing connections shall be free of oil, paint or other coatings.

N. Supplier shall thoroughly mix all ingredients in any container of coating materials with a mechanical mixer and continue agitation during application.




O. Application rate and dry film thickness for each coat shall be in accordance with Section 2.3 – 2.5 for the specified paint.

P. Supplier shall limit brush and roller applications to touch-up to areas inaccessible to spray application.

Q. Coating materials shall be applied in even, parallel passes, overlapping each pass 50% immediately followed by cross-spray passes to obtain a continuous film free of bare spots, pin holes and holidays. The final coating surfaces shall not have any runs, sags, solvent blisters, dry spray or other blemishes. All irregularities shall be removed or repaired or recoated.

R. Supplier shall avoid laps and roller edge lines in roller applications.

S. Unless otherwise specified, painting required for surfaces to be thermally insulated shall consist of a prime coat only.

T. Coating work shall be in strict accordance with OSHA 1910.144, and any other applicable health and safety requirements.

U. Damaged and unpainted areas, for example, fasteners and welds, requiring touch-up, shall be power-tool cleaned, prepared and painted as specified in Sections 2.3 – 2.5 of this Specification.

V. Where top coats are to be applied on site to shop primed surfaces, surfaces shall be solvent cleaned as per SSPC-SP1 and painted as specified in Sections 2.3 – 2.5 of this specification. The top coats shall be compatible with the primer.

W. After on site erection, bolts shall be degreased and painted with finish coats as specified. Structural steel bolted connections shall be seal painted.

X. The surface contact between pipe supports and structures must be painted.

Y. Adjacent and auxiliary equipment shall be protected from grit, paint overspray and splashing. Containment is defined as 85% or better. Any property damage caused by blasting or painting shall be made at the expense of the supplier or contractor.

Z. If unexpected contamination does occur, then contamination shall be removed by a suitable solvent to ensure inter-coat adhesion.

AA. Supplier shall supply all hording and heating to provide an approved environment for painting and curing.

3.5 Protection

All finished painted or galvanized surfaces shall be protected from damage prior to acceptance by Buyer.

3.6 Cleaning

Supplier shall remove spilled, splashed or spattered paint from all surfaces and avoid marring surface of item being cleaned.

3.7 Field Touch-up

A. Supplier shall provide equipment, materials and procedures as necessary for the field touch-up of all steel items. The supplies of equipment and procedures shall be included with each delivery of steel.




B. Before any touch-up or recoat material can be applied, the first coat must be properly prepared for inter-coat adhesion in accordance with the paint manufacturer’s written instruction.

C. Field touch-up procedures shall be approved by Field Inspector before commencing work.

3.8 Jobsite Environmental Conditions

A. Weather conditions, and specially dew point, must be constantly monitored.

B. Final blast cleaning and application of this painting system must only be performed when it is clear that temperature of the steel substrate will not fall within 2°C of the dew point. Dehumidification and/or temperature control equipment may be necessary to meet this requirement.

C. The supplier shall use a thermometer to frequently monitor the temperature of the steel substrate.

3.9 Inspection and Quality Control

A. Submittals

1. The supplier shall submit procedures for quality control, testing and documentation to Buyer for review before the start of painting work. These procedures shall include methods and forms necessary to reflect status of required examinations and tests, and also ensure that the specification requirements listed below are accomplished.

a. Contractor’s certification that coatings comply with all Federal Government and local regulations for Volatile Organic Content (VOC) at the location where the coatings are applied

b. Manufacturer product data indicating paint systems to be applied and surfaces to be painted, including analysis (by weight) of solvent, binder and pigment, and mixing, thinning and application recommendations

c. Documents that warranty the qualifications of the contractor

d. Paint manufacturer’s requirements, including application procedures for coating materials shall be in writing and becomes a part of this specification and shall be followed in details. All safety precautions recommended by the paint manufacturer shall be strictly adhered to at all times when work is in progress.

e. Color sampler or color chips, based on the color scheme shown in Attachment 1

2. Buyer’s review or lack of review of quality control documents shall not be construed as acceptance or omissions or defective work. Nor shall it in any way lessen the supplier’s/contractor’s responsibilities to provide a completely operative system or component in full conformance with the specification.

B. Inspection

Inspection and Quality Control shall comply with SSPC Chapter 5 and Chapter 6 respectively.

C. Minimum Inspection Required Before and During Painting

1. Visually inspect all surfaces to ensure that the proper surface conditions necessary for the painting exist.

2. Confirm that the environmental requirements for blast cleaning are met.




3. Verify surface preparation and surface profile.

4. Verify that cleaned surfaces have been kept free of contamination. Verify that surfaces not to be coated are masked off or otherwise protected prior to painting of adjacent surfaces.

5. Verify that moisture, other contamination and surface imperfections are not present.

6. Document the temperature, humidity and substrate temperature.

7. Verify that storage, mixing, thinning and application of coatings are in accordance with paint manufacturer’s instructions.

8. Verify the wet film thickness of coating. The wet film shall be uniform without runs and sags.

9. Check for initial mist pass of the coating to avoid dry spray.

10. Check for proper atomization and avoid dry spray.

Supplier shall supervise the works being performed by Contractor if requested by Buyer. Supplier shall provide personnel on site to assist with technical inspection of fieldwork.

D. Minimum Inspection Required After Painting

1. Verify dry film thickness of coatings

2. Verify that the paint film is free of defects. The painted surface shall be free of blisters, bubbles, craters, sags, runs, dry spray, lap marks and unnecessary brush marks.

3. Verify bond strength of primer and finish coats. Bonds strength between the substrate and primer and between the coats shall be tested per ASTM D4541. The number of tests shall be at least 5 for each batch of bulk items and 2 for each piece of equipment at random locations selected by Buyer’s Inspector.

4. Verify all masking tape is removed.

5. Verify that coating is cured as specified in the paint manufacturer’s application data. Cure of catalyzed materials may be determined by exposure to a suitable solvent as recommended by the paint manufacturer.

Inspection items shall include but shall not be limited to those described above. Inspection instruments shall be adequate in performance and approved by the Buyer. All test instruments shall be maintained and calibrated as prescribed by the manufacturer on a regular schedule.

E. Field Quality Control

1. Repairs made in the field shall be documented and re-inspected as outlined above.

2. The Contractor shall protect all finished painted or galvanized surfaces from damage prior to acceptance.

3. All spilled, splashed, or splattered paint shall be removed from all surfaces. Surfaces of items being cleaned shall not be marred.

3.10 Safety

A. The contractor shall comply with all of the applicable Government Security and Safety regulations.




B. Safety shields, helmets, goggles, respirators, and protective clothing shall be worn where necessary during blasting or coating operations.

C. Work inside a confined area shall meet all applicable confined space work regulations, including the placement of another person on the outside to ensure the safety of those working inside.

4. ATTACHMENTS

Attachment 1 Color Scheme

End of Document

Sociedad Minera Cerro Verde Document No. 240K-C2-ES-55-002 Cerro Verde Production Unit Expansion Revision 0 Project No. A6CV Attachment 1



Attachment 1 Color Scheme




COLOUR SCHEME

Equipment Paint Colour

Manufactured equipment Manufacturer's standard

Fabricated platework Pearl Grey

Cranes, crane bridge, runway beam Safety yellow (stencil capacity in safety black)

Monorail, monorail beams Safety yellow (stencil capacity in safety black)

Bollards Safety yellow (stripped with safety black)

Equipment guards Safety yellow

Pumpboxes Pearl Grey

Tanks (located outside of buildings) Pearl Grey

Tanks (located inside of buildings) Pearl Grey

Structural steel Primer

All grating, checker plate, stair treads (interior and exterior)

Black

Handrails, kickplates, ladders and cages Safety yellow

Wall mounted louvres Match adjacent cladding

HVAC ductwork Galvanized steel with Z90 zinc coating

HVAC equipment Manufacturer’s standard

Piping (process and utility) See Specification 240K-C2-CS-50-008, Pipe Markers for Commodity and Safety Identification

Dust collection ductwork Pearl grey

Colour listed above shall be equivalent to the following:

Safety Yellow - use Ameron YE-3 or Buyer approved equivalent

Pearl Grey - use Ameron GR-3 or Buyer approved equivalent

240k-c2-es-55-002-2.pdf

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