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VIETSOVPETRO JOINT VENTURE

PROJECT TITLE : THE GASLIFT BK14-BT7 EXTENSION LOCATED AT "WHITE TIGER" FIELD

DOCUMENT TITLE : PAINTING SPECIFICATION

DOCUMENT NO. : BK14-BT7-S-SP-001

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TABLE OF CONTENT 1.0 PURPOSE 3

2.0 SCOPE 3

3.0 DEFINITIONS 3

4.0 SURFACE PREPARATION 4

7.0 SPRAY APPLICATION 8

8.0 BRUSH AND ROLLER APPLICATION 9

9.0 REPAIR OF COATING/PAINT DAMAGE 9

10.0 COATING/PAINTING AFTER WELDING 9

11.0 INSPECTION 10

12.0 SAFETY 11

13.0 APPENDIX A DETAILED COATING SYSTEMS 12

14.0 APPENDIX B 14

Document No : BK14-BT7-S-SP-001 Revision No : 0 Date : 04/03/2014

VIETSOVPETRO 14I:SWVPETRO Page : 3 of 14 1.0 PURPOSE This procedure is served as a guideline for the surface preparation and painting / coating application of facilities.

2.0 SCOPE The procedure covers the methods, equipments and materials to be used for carrying out surface preparation and painting/ coating application of facilities including structural steel works, tanks, vessels, piping systems, etc. Specialized equipment supplied by vendors such as valves, pumps, compressors, etc. will be coated in compliance with the User's respective functional specification; as such they are not covered under this procedure.

3.0 DEFINITIONS 3.1 General definitions

The Company is a joint venture established by and between two governments Russia and Vietnam, carrying out of exploration and production of petroleum resources in the OPERATION AREA. The Contractor is the party, which carries out all or part of the design, engineering, procurement, construction and commissioning or management of the project or operation of a facility. Paint Contractor is a sub-contractor employed to carry out the part of the project which includes surface preparation and application of the paint coating system. The Manufacturer/Supplier is the party, which manufactures or supplies equipments and services to perform the duties specified by the Contractor. The word shall indicate a requirement. The word should indicate a recommendation.

3.2 Specific definition The Painting System is a term intended to include, with equal emphasis, not only the well accepted components of a system such as surface preparation and paint materials, but also the application, inspection, and safety functions. The Coating System is a term which refers to the applied and cured multilayer film or to the components of a system based on non-paint type coating. The Paint is the material in the general sense, includes primers, enamels, varnishes, emulsions, catalyzed coatings, bituminous coatings, and other organic coatings. Inorganic coatings, which are applied in the same manner as paints, are included in this definition. The Work is a term, which refers to all works associated with the selection of the painting and coating systems, surface preparation, paint application, and inspection. The Initial painting is the painting of new construction projects or complete recoating of existing facilities during major maintenance. The Maintenance painting is the Periodic painting (repair/touch up of corroded areas or deteriorated paintwork) after initial painting.

3.3 Abbreviations RH Relative Humidity DFT Dry Film Thickness WFT Wet Film Thickness QC Quality Control

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HSE

Health, Safety and Environment EQA Environmental Quality Act ASTM American Society for Testing & Material ISO

International Organization for Standardization

3.4 Applicable codes and standards SSPC SP 1 SSPC SP 2 SSPC SP 3 SSPC SP 5/NACE 1 SSPC SP 10/NACE 2 SSPC SP 6/NACE 3 NACE Standard RP0287

BS EN ISO 14713

BS EN ISO 12944 ISO 8401: 2007

ISO 8501-1:1998

BS 7079 Pt.A1

ASTM D 3359 ASTM D 4541

4.0 SURFACE PREPARATION 4.1 General

Solvent cleaning Hand tool cleaning Power tool cleaning White metal blast cleaning Near white blast cleaning Commercial blast cleaning Field measurement of surface profile of abrasive blast cleaning surface using Replica Tape Zinc coatings, guidelines and recommendations for the protection against corrosion of iron and steel in structure

Protective paint system Metallic coatings. Review of methods of measurement of ductility Preparation of steel substrates before Application of paint and related Products-Visual Assessment for Surface Cleanliness Preparation of steel substrates before Application of paint and related Products Measuring Adhesion by Tape Test Pull-off strength of coating using portable Adhesion Testers

For optimum paint coating performance, surfaces to be painted or coated shall be completely dry and free from burrs, weld spatter, flux, rust, loose scale, dirt, grease, oil and other foreign matter before any coat is applied. After preparation of the substrate surface, any grit, dust etc. shall be removed and a layer of primer applied before any corrosion or recontamination occurs, normally within 4 hours after blasting. Surface preparation shall be carried out by dry blast-cleaning wherever possible. The surface preparation grades shall be as specified for the various painting and coating systems. Surface preparation shall be subjected to inspection before the prime coat is applied to ensure all traces of dust and foreign matter have been removed by brushing, blowing with dry clean

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compressed air, or vacuum cleaning. 4.2 Pre-cleaning of surfaces and solvent cleaning

This cleaning procedure is mandatory before further cleaning or surface preparation. Prior to the actual cleaning operation, surface contaminants such as oil, grease, hydrocarbon, etc. shall be removed preferably by degreasing with suitable degreaser or solvent cleaning. The degreased surface shall be further washed with fresh water to remove all traces of the chemicals. The surface shall be allowed to dry thoroughly before proceeding with any further coating work. This procedure also applies to all metal surfaces to be coated that do not require blast cleaning or power tool cleaning. The procedure shall be cleaned in accordance with the SSPC SP-1. Excessive rust scale shall be removed by impact cleaning tools or high pressure water jetting. Before abrasive blast cleaning, all equipment which could be damaged by blast, dust or particulate matter shall be suitably protected by masking, wrapping, tapping, or other means to prevent damage. The equipment shall include, but not necessarily be limited to, the following:

- Bearings - Control panels - Control valves - Conduit - Instrument dials - Expansion joint bellows - Machined surfaces - Shafts - Push buttons - Tags - Screws - Exposed moving parts

4.3 Surface preparation by abrasive blasting 4.3.1 General

Surface preparation by abrasive blasting shall be to a near white metal. Surface preparation by abrasive blasting shall be cleaned in accordance with the SSPC SP-10 or ISO 8501-1: 1988, Sa 2.5. The fmish visual standard in accordance with SSPC-SP-5, Sa 2.5 at the time of coating. The surface profile after blasting shall be from 40 to 70 microns.

4.3.2 Preparation for abrasive blasting Prior to abrasive blasting, all joints are to be continuously welded, and all corners, edges shall be rounded to a 1.6mm minimum radius. Welds must be free of pinholes, and all weld spatter shall be removed prior to blasting. Before and after abrasive blasting, all weldments shall be closely inspected for the presence of welding flux, spatter, slivers, inclusions, lamination and underlying mill scale. Imperfections shall be removed and the immediate area re-blasted. Prior to blasting, all oil, grease, varnish, soil, salt and other contaminants shall be removed by solvent cleaning, and/or wet steam and detergent cleaning.

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4.3.3 Materials and condition does abrasive blasting Abrasive material shall be dry, clean and free from contaminates. It shall be of a type and size adequate to give required surface profile. Abrasive material shall be selected in accordance with surface preparation method and hazardous area classification of project. Blasting is not permitted if the relative humidity is greater than 85 percent, or if the surface temperature is less than 3C above the air dew point. The compressed air supply for blasting shall be free of detrimental amount of oil and water. Adequate separators and traps shall be provided, and shall be frequently checked, cleaned and emptied. Stainless steel surfaces which are to be coated shall be cleaned by solvent. Care shall be taken to ensure aluminum, stainless steel, and all dissimilar metals are segregated form the surface preparation operations of carbon steel material.

4.4 Surface preparation by hand and power tool cleaning Surface preparation by hand and power tool cleaning shall be cleaned in accordance with the SSPC SP-3 or ISO St3. The most technically effective surface preparation method is abrasive blasting. Manual preparation shall only be used when abrasive blasting is either not feasible or not strictly required. Manual cleaning shall be performed using hand wire brushes or mechanically operated tools (grinders, chippers or wire brushes). The surface shall be left roughly and a burnished surface shall be avoided. Where welds occur within these areas or when these areas cannot accommodate a power disc, power impact tools shall be applied (vibratory and rotary hammers, needle guns, chisels) followed by brush cleaning. If the surface being prepared lies adjacent to a coated surface, which is not to be refurbished, the power tool cleaning shall overlap the coated surface by at least 25 mm. Care shall be taken to ensure that the substrate surface does not become polished during power tool cleaning.

4.5 Test plan Paint materials should be reviewed and checked their quality before application. Paint qualification can be done on suitable steel panels (1 mx 1 mx 10 mm) that are cleaned to the specified requirement and surface profile before application of painting systems in accordance with the instructions of the paint manufacturer(s). The coatings on the panels shall be checked after complete dry with the minimum following parameters:

Dry film thickness. Defects. Appearance (runs, sags, colors...). Holiday test shall be performed in accordance with the standard NACE RP

0188 88 anywhere if necessary. Criteria for acceptable coatings are no holiday. Adhesion test shall be performed in accordance with the standard ASTM D

4541. Criteria for acceptable coatings are that adhesion strength is minimum 2.5 MPa for the coatings epoxy/polyurethane.

The test results should be recorded in the suitable inspection report.

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The Contractor shall generate quality records from the inspection and test activities and in accordance with the approved inspection and test plan(s). The records shall be compiled and reviewed by the Contractor following the completion of each inspection and test. Note: The records for qualification of paint materials that are in accordance with the above technical requirements also can be reviewed and accepted. 5.0 COATING MATERIAL

5.1 Material supplier Coating materials for the project should be supplied by approved paint manufacturers (such as PV Paint, ADP, Jotun, Sigma, Hempel...).

5.2 Packing and storage All paint and coating materials shall be furnished in the manufacture's unopened containers, which shall be identifiable and protected. Lot number and date of manufacture shall be clearly marked on the containers. The recommended shelf life and the use by date shall be clearly identified. All materials shall be stored out of direct sunlight in well-ventilated areas and away from heat source, in accordance with manufacture's recommendations.

5.3 Visual check Prior to painting work, the paint shall be visually checked confirming that the paint is in suitable condition for application.

5.4 Mixing Coating system All components shall be thoroughly mixed by mechanical means. This mixing shall be done in cleaned containers, free from traces of grease, other paint or contaminants. Multi-component coating, such as inorganic zinc, epoxy and urethane, the components shall be measured accurately under the manufacturer's directions.

5.5 Thinner Thinner/paint ratio will be confirmed to the limits recommended by the manufacturer.

5.6 Pot life The coating manufacture's recommended pot life shall not be exceeded. When this limit is reached, the spray pot shall be emptied and cleaned, and new materials shall be mixed.

6.0 GENERAL APPLICATION 6.1 Application

Painting shall be carried out by airless spray, air spray, brush or roller according to paint manufacturer's recommendation.

6.2 Environmental conditions Painting or coatings shall not be applied when any of the following conditions exist: Painted surface is wetted.

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Relative humidity exceeds the manufacturer's recommendation or 85% whichever is the lower. Steel surface temperature is less than 3C above the dew point Ambient or surface temperature is above or below the manufacture's recommended temperature for application. Whenever painting is carried out in the field, and poor weather conditions prevail, adequate precautions shall be taken to protect the activity from adverse effects of wind and rain.

6.3 Dust Every possible precaution shall be taken to eliminate dust before and during painting process. Cleaning down prior to painting is recommended by manufacturer following long periods between coats and following inclement weather. Cleaning down may be done by fresh water spraying, sanding paper or by other approved methods.

6.4 Primer coating Blasting cleaned surfaces shall be coated with one complete application of primer as soon as is practically possible, but in no case later than 4 hours after blasting.

6.5 Dryness Each coat shall be in a proper state of cure prior to the application of succeeding coats. Materials shall be considered dry for re-coating when manufacture's technical representative has accepted the coat and the additional coat can be applied without the development of any detrimental film irregularities, such as lifting or loss of adhesion of the undercoat. The dry time as specified in the manufacture's data sheets, will be observed at all times.

6.6 Re-coating The maximum and minimum re-coating interval in the manufacture's data sheets will be observed before successive coats are applied. The only exception to this may be after application of a mist coat where the recommended re-coat interval may be reduced in accordance with the coating manufacturer's recommendations. Any thin spot or area missed in the application shall be re-coated and permitted to dry before the next coat is applied.

6.7 Masking All nameplates, manufacture's identification tags, machine surfaces, finished flange faces, control valves etc., shall be masked before painting to prevent painting contamination.

7.0 SPRAY APPLICATION Spray coating shall comply with the followings:

Coating manufacturer's recommendations. Spray equipment manufacturer's recommendations for the coating material and This procedure.

7.10perators Operators shall be skilled in the proper application technique for each coating.

7.2 Spray application Prior to application, all coating material shall be vigorously stirred in spray pot until pigments,

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vehicles, and catalysis are mixed thoroughly. Prior to add new material, lines, pots and guns shall be thoroughly cleaned following each application. Solvent left in the equipment shall be removed completely before coating the prepared surfaces. For optimum spraying effectiveness, the pressure on the material in the pot and of the air at the gun shall be adjusted and maintained to deliver the material at the rate specified by the manufacturer. Air pressure and volume shall be minimum required to properly atomized the coating material. The spray gun shall be hold perpendicular to the surface at all times and a maximum distance of 300mm from the surface and no closer than 200mm to the surface that will ensure depositing a fully wet layer of coating material on the surface. Arching of the gun is not permitted. Parallel, even passes shall be made that overlap the previous spray coating by 50 percent. Large continuous surfaces shall be coated by two passes made at right angles to each other. All runs, air bubbles, sags and other imperfections shall be brushed out immediately or the coating shall be removed and re-sprayed.

7.3 Equipment cleaning Spray guns, lines and pressure pots shall be cleaned prior to adding a new material. The air caps, nozzles and needles shall be those recommended by the coating manufacturer for the material being sprayed.

7.4 Compressed Air Compressed air shall be free from water and oil. Suitable air filters, separators and traps shall be provided and installed in the coolest part of the system , they shall be regularly emptied to prevent carrying over of water and oil. Accumulations of oil and moisture shall be removed from the air receiver by regular purging. Air compressor shall not deliver air at a temperature in excess of 110C. 8.0 BRUSH AND ROLLER APPLICATION Coating may be applied with a brush and roller in areas that can not be spray coated. Brushes shall be of a style, quality and composition that enable proper coating application. Round or oval brushes are the most suitable for coating rivets, bolts, and irregular surfaces. Wide flat brushes are suitable for large flat surfaces. A brush width greater than 125mm is not acceptable. Successive coats shall be applied by crosshatching the previous coat. Runs, air bubbles and sags shall be brushed out immediately. Coating shall be worked into all crevices, and corners. Surfaces not accessible to brushes shall be coated with daubers.

9.0 REPAIR OF COATING/PAINT DAMAGE Surface preparation for damaged areas shall be performed using hand wire brushes, galvanizing damaged method or mechanically operated tools (grinders, chippers or wire brushes). The surface shall be left roughly and a burnished surface shall be avoided. All damaged areas, before and after erection, shall be repaired, using the original coating system. Where paint has been damaged or is loosely adhering, the paint shall be removed and the surface shall be thoroughly cleaned prior to applying the new coating. If repair to the coating of vendor supplied equipment is necessary, it shall be carried out in accordance with the vendor's recommendations and only after Company approval.

10.0 COATING/PAINTING AFTER WELDING This is achieved by approved methods, but is generally used where paint surfaces were damaged

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during the fabrication and welding operations. The method for coating/painting in these areas shall be the same as the method of repairing the painting damage.

11.0 INSPECTION 11.1 General.

To ensure the quality control inspection requirements are maintain during the abrasive blast cleaning and painting operations. Inspection will be carried out by Inspector and project Engineer in accordance with the requirements of this procedure. As a minimum following requirements for each coating system, the following aspects shall be recorded in a coating inspection record:

Ambient condition (at each occasion of abrasive blast cleaning or coating application) including ambient temperature, surface temperature, relative humidity.

Coating batch number, cure time, thinner to be used, and ratio between thinner and coating material.

Quality of surface preparation/ surface profile. Dry film thickness of each coat. Dry film thickness of the total system. Visual aspects of the coating. Production Test: pull-off, adhesion, holiday testing.

11.2 Visual inspection Each coat and complete coating shall be visually inspected for appearance. The coating shall be flatness, under coat not be seen, free from excessive sagging, pinholes and blisters, cracks, extensive over dripping, etc.

11.3 Dry Film thickness 11.3.1 Dry Film Thickness Measurement

The dry film thickness of each coat shall be spot checked by using means of a magnetic type thickness gauge or comparable instrument.

11.3.2 Zero Setting The gauge shall be set to scale zero on a flat section of steel with surface finish prepared in accordance with this procedure.

11.3.3 Dry Film Thickness (DFT) Value Each 10 square meters of area of painted/ coated surface shall be measured with at least five (5) separate spots spaced evenly. Each spot shall be measured and recorded with three readings. The average of DFT of 5 spot measurements for each such 10 square metres area shall not be less than specified thickness. No single spot measurement value in any 10 square metres area shall be less than 80 % of specified thickness. No measurement of DFT will normally be made on machinery, equipment, small bore pipes with nominal diameter less than 50 mm, pipe supports, machinery seats, small fittings and pipe supports where the geometrical surface limits practical inspection. DFT values shall be recorded on Coating inspection Report/ Record

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12.0 SAFETY All Coating Contractors using this standard, shall have a section in their Safety Management System devoted to industrial coating applications. This shall include, but not be limited to the following sections.

12.1 General A safe area shall be established and clearly identified for handling and storage of all flammable materials and for waste disposal. No source of ignition shall be permitted within the safe area at any time. The Contractor shall take proper precautions before and during work in confined areas and/or in areas with the potential for fire or explosion. If possible, all electrical equipment shall be located remote from the hazardous work area in a well-ventilated, non-hazardous space. All electrical equipment intended for such areas shall be of an approved type in accordance with the area classification requirements established by the relevant IEC codes. The Contractor shall provide and maintain fire extinguishers approved for the expected fire hazard near or in all work areas. The Contractor shall provide and install sufficient scaffolding and staging for easy access during surface preparation, coating application, and inspection of all surfaces. The supporting structure and the surface or item being worked on shall be constructed so that workers will have free use of body and arms. The structures shall be provided with safety features that will help prevent accidents. The structures shall comply with all applicable OSHA requirements. The Contractor shall exercise extreme care and caution when working in the vicinity of in-service facilities. All valves, switches, and controls shall remain unmoved and undisturbed.

12.2 Handling of Chemicals Material Safety Data Sheets (MSDS's) shall always be available for review during transport and prior to the application of the product. Manufacturer's instructions for the safe handling of products shall be followed to minimize the risk of injury or creation of health hazards to personnel. Handling of coatings and chemicals shall be carried out with due care and diligence. The correct use of personal protection equipment (PPE) shall be employed during the coating preparation and application. Disposal of chemicals must be treated with due regard to environmental protection.

12.3 Spray and blasting operations Abrasive blasting and spray coating shall be performed with approved equipment by experienced operators. The Contractor shall provide all operators with hoods for protection against abrasives and with paint masks that are OSHA approved for extended service. The hoods and masks shall be worn at all times when work is being done. Pressure vessels, such as sand hoppers and compressed-air volume tanks, shall be protected from over-pressurization with automatic pressure relieving devices. Pressure nozzle controls shall be of the fail-safe, dead-man type. Pressure hose connections shall incorporate a positive locking mechanism to prevent accidental disconnection (For example, quick-connect connections shall have safety wire in place). Adequate ventilation shall be provided in confined areas with blowers capable of a minimum of 12 air changes per hour.

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Spray and blasting equipment in confined areas shall be securely grounded to dissipate static electrical charges. Hand tool shall be made of spark-proof materials.

12.4 Pressure Equipment The safe operation of all pressure equipment shall be detailed in the Contractors Safety Management System and show how, when and records for the inspection of such equipment. The equipment and associated connections shall be regularly inspected and well maintained.

12.5 Earthing All equipment, particularly nozzles, tanks, piping and cable trays and cable ladders shall be earthed to prevent sparking and electric shocks from static electricity.

12.6 Breathing Apparatus Appropriate air-fed masks should be used during blasting and coating operations. Other personnel in the vicinity shall wear suitable protective masks or respirators when necessary. Adequate ventilation must be provided in confined spaces and when using air-fed masks in these areas, attention should be paid to the possibility of explosive vapor build-up. As a minimum, dust, rust and vapors should be directed away from the operator by wind or extraction fan.

13.0 APPENDIX A DETAILED COATING SYSTEMS

Surface to be coated Operating Temp. System Remark

Structure steel, carbon steel equipment, piping, valves, vessels etc.

Ambient up to 110C I

Galvanized and aluminum alloy surfaces Ambient bien t II

Ladders, cages, stairs, handrails and where nominated

Stainless steel Ambient to 100C III Where nominated

Earthing connections Ambient IV

COATING SYSTEM I

SCOPE: Structural steel, carbon steel equipment, piping, vessels, valves, motors, guards with surface operating temperature up to 110C

PREPARATION: Abrasive Blast Cleaning

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COAT PRODUCT DESCRIPTION MN DRY FILM THICKNESS (microns)

PRIMER

INORGANIC ZINC SILICATE (Note 1)

75

INTERMEDIATE HIGH BUILD EPDXY

150

FINISH

POLYURETHANE

50

TOTAL MINIMUM DRY FILM THICKNESS

275

NOTE: One layer of tie coat epoxy or mist coat epoxy with about 35 microns DFT is to be applied after inorganic zinc silicate primer ._

COATING SYSTEM II

SCOPE: Galvanized and aluminum surfaces (where nominated) PREPARATION: Sweep Blast Cleaning before applying primer

COAT PRODUCT DESCRIPTION MIN DRY FILM THICKNESS (microns) PRIMER ETCH PRIMER 10(Max)

INTERMEDIATE HIGH BUILD EPDXY 150

FINISH POLYURETHANE 50

TOTAL MINIMUM DRY FILM THICKNESS 210

COATING SYSTEM III SCOPE: Stainless steel surfaces up to 100C (where nominated) PREPARATION: Sweep Blast Cleaning before applying pnmer

COAT PRODUCT DESCRIPTION MN DRY FILM THICKNESS (microns) PRIMER ZINC PHOSPHATE EPDXY PRIMER 50 - 75

FINISH POLYURETHANE/ ACRYLIC POLYSILOXANE

50

TOTAL MINIMUM DRY FILM THICKNESS 100 - 125

NOTE: Stainless steel surfaces shall not be coated unless either specifically nominated or the component is to be insulated.

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COATING SYSTEM IV SCOPE: Following installation of equipment and connection of earth leads

to earth bosses, all exposed carbon steel on the earth connection shall be coated with the following system

COAT PRODUCT DESCRIPTION MIN DRY FILM THICKNESS (microns) PRIMER ZINC RICH EPDXY 50 75

TOTAL MINIMUM DRY FILM THICKNESS 50 - 75

NOTE: 1. Prior to touch up coating of exposed carbon steel, the surface shall be prepared. 2. In addition, the earth connection shall be wrapped with Denso tape.

COLOR

1. Process Gas and Blow down: SIGNAL YELLOW 2. Instrument air: BLUE 3. Water spray pipe: RED 4. Steel structure: DARK GREEN

NOTE: The color of previous fmal coat should be different to, but corresponding to final coat

14.0 APPENDIX B Form of Painting Inspection Report

APPENDIX B

INSPECTION'S DAILY REPORT ANTICORRODING WORKS

PROJECT: Date: .... / / Location: Date of the week: Sun / Mon / Tue / Wed / Fri / Sat

Sheet No.:

Contract No Client Contractor

Weather condition N/C Criteria Air Temperature Ta, C RH, % RH < 85% Steel Temperature Ts, C 0 C < Ts < 50 C Dew Point Td, C AT = Ts Td, C AT>3C

Acceptance q Accepted q Not Accepted

q Accepted q Not Accepted

q Accepted q Not Accepted

q Accepted q Not Accepted

Surface preparation Start time End time Method q Abrasive Blast Cleaning q Power Tool Cleaning q Hand Tool Cleaning Degree of cleanliness q Sa2.0 q Sa2.5 q Sa3.0 q St3 q St2 Surface profile

Paint Application l coat 2nd coat 3' coat 4th coat Remark Start time End time

Method q Airless spray

q Brush q Airless spray q Brush

q Airless spray q Brush

q Airless spray q Brush

WFT, micron DFT, micron

Paint Technical Data Batch number of Base

Batch number of Hardener Batch number of Thinner

Comment:

Review by: Inspector's Signature QC Engineer Date

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