8455003 000 JSD 2320 001 REV.a Internal Corrosion Resistant Lining

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Project Unit Doc. type Mat.Code S/No. Rev. Page VIETNAM OIL AND GAS CORPORATION (PETROVIETNAM) PETROVIETNAM TECHNICAL SERVICES CORPORATION TWO ADDITIONAL CRUDE TANKS PROJECT INTERNAL CORROSSION RESISTANT LINING JOB SPECIFICATION FOR DESIGN INTERNAL CORROSSION RESISTANT LINING DOCUMENT CLASS : X

Transcript of 8455003 000 JSD 2320 001 REV.a Internal Corrosion Resistant Lining

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Project Unit Doc. type Mat.Code S/No. Rev. Page8455003 000 JSD 2320 001 A 1 of 22

VIETNAM OIL AND GAS CORPORATION (PETROVIETNAM) PETROVIETNAM TECHNICAL SERVICES CORPORATION TWO ADDITIONAL CRUDE TANKS PROJECT INTERNAL CORROSSION RESISTANT LINING

JOB SPECIFICATION FOR DESIGN

INTERNAL CORROSSION RESISTANT LINING

DOCUMENT CLASS : X

A Issue For Review NG.TAN LUAT TR.DAT NGUYEN PH.VAN HUNG

Rev Date DD/MM/YY

STATUSWRITTENBY (name & visa)

CHECKED BY(name & visa)

APPROVED BY(name & visa)

DOCUMENT REVISIONS

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CONTENTS

1. SCOPE

2. REFERENCES

3. GENERAL DESIGN REQUIREMENTS

4. FABRICATION REQUIREMENTS

5. SURFACE PREPARATION

6. LINING PROCESS

7. LINING SELECTION

8. INSPECTION OF LININGS

9. COATING REPAIR

10. DOCUMENTATION

APPENDIX

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1. SCOPE

This Project Standard defines the minimum requirements for the application, inspection and testing of internal corrosion resistant linings for concrete structures and metallic equipment and piping. The requirements specified herein shall be incorporated into Contractor design specifications, requisitions and/or other purchase order/sub-contract documentation.

This Project Standard shall be read in conjunction with Licensor and Vietnamese mandatory standards, codes and regulations that also apply. In the event of any conflict between this Project Standard, the above mentioned documents and industry codes and standards, Contractor shall seek clarification from PetroVietnam before proceeding.

This Project Standard is for use by Contractor only and shall not be issued to Vendors or other third parties.

2. REFERENCES

The following documentation is referenced within the text of this Engineering Standard:

Unless otherwise noted, the latest edition of the following standards shall apply:

API Standard 650 Welded Storage Tanks for Oil Storage

ASME Section V Nondestructive Examination

ASTM D4541 Standard Test method for Pull-Off Strength of

ASTM D4263 Standard Method for Indicating Moisture in Con-crete by the Plastic Sheet Method

ASTM D4940 Standard Test Method for Conductimetric Analysis of Water Soluble Ionic Contamination of Blasting Abrasives

NACE Standard RP0178 Fabrication Details, Surface Finish Requirements and Proper Design Considerations for Tanks and Vessels to be Lined for Immersion Service

NACE Standard RP0184 Repair of Lining Systems

NACE Standard RP0188 Discontinuity (Holiday) Testing of protective Coat-ings

NACE Standard RP0287 Field Measurement of Surface Profile of Abrasive Blast Cleaned Surfaces Using a Replica Tape

NACE Standard RP0288 Inspection of Linings on Steel and Concrete

NACE Standard RP0892 Linings over Concrete for Immersion Service

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NACE No.2/SSPC 10 Near White Metal Blast Cleaning

NACE No.6/SSPC 13 Surface Preparation of Concrete

SSPC-SP1Steel Structures Painting Council Surface Preparation Specification No.1 – Solvent Cleaning

SSPC-PA2 Steel Structures Painting Council – Paint Appli-cation Specification N°2 – Measurement of Dry Paint Thickness with Magnetic Gages

BS 6374, Pt.4 Lining of equipment with polymeric materials for the process industries – Part 4. Specification for lining with cold curing thermosetting resins

ISO 4624 Paints and varnishes. Pull-off test

ISO 2409 Paints and varnishes. Cross-cut test

ISO 8501 Preparation of steel substrates before application of paints and related products – Visual assessment of surface clean-liness

ISO 8502-6 Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness: extraction of soluble contaminants for analysis – The Bresle method

ISO 8502-9 Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness: Field method for conductometric de-termination of water-soluble salts

ISO 19840 Paints and varnishes. Determination of dry film thickness. Non-destructive magnetic flux method

BS 7079 Pt.A1/ISO 8501-1 Specification for rust grades and preparation grades of un-coated steel substrates and of steel substrates after overall removal of previous coatings

3. GENERAL DESIGN REQUIREMENTS

3.1 General

3.1.1 Internal corrosion resistant linings shall be designed, installed and tested in accordance with BS 6374, Pt.4 and NACE Standards RP0178 and RP0892.

3.1.2 For metallic materials, lining activities shall be allowed to abrasive and lining activities up to intermediate coat at workshop and finish coat will be done at site after finishing Hydrostatic test.

3.1.3 For site-erected storage tanks shall be allowed to abrasive and lining activities up to in-termediate coat at workshop and finish coat will be done at site after finishing Hydro-

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static test. Lining activities may be performed prior to pressure testing providing all welds that are covered by the lining are subject to 100% vacuum box testing or gas leak detection in accordance with API Standard 650, 5.3.3 and the requirements of ASME Section V. Contractor shall submit specific details of its proposed test method for Petro-Vietnam review and approval.

3.1.4 For concrete structures, lining activities shall not commence until the concrete has been adequately cured and all surface irregularities, such as voids, cracks, spall concrete etc., have been repaired using a suitable cementitious or polymeric patching material.

3.1.5 Internal corrosion protective linings shall be based on the use of cold curing thermoset-ting resin coating systems in accordance with BS 6374, Pt.4 and that are fully compati-ble with the service fluid at the maximum design conditions. Alternative coating sys-tems shall be submitted to PetroVietnam for review and approval prior to commence-ment of lining.

3.1.6 Non-reinforced coatings shall have a minimum dry film thickness (DFT) in accordance with the coating manufacturer’s recommendation but in no case shall it be less than of 250 microns. Reinforced coatings shall have a minimum DFT in accordance with the coating manufacturer’s recommendation but in no case shall it be less than 1.2mm.

3.1.7 Prior to commencing lining activities, Contractor shall provide evidence for PetroVietnam review and approval, of the ability of the selected coating thickness to withstand the service fluid and conditions. This evidence may be in the form of recent service history and results of laboratory testing.

3.1.8 A holding primer may be used during lining activities on metallic materials to facilitate performance of the coating application. Prior to application of the full coating system, the holding primer shall be inspected, any damage repaired and the surface suitably pre-pared for the initial primer coat of the full system.

3.1.9 Each coat shall be of contrasting colour to the previous coat so as to facilitate full coverage and identify the stage of the lining system being applied. The colour of intermediate coatings shall not be varied during lining activities.

3.1.10 Prior to commencing lining activities on metallic materials, two-off 300 mm square sample plates shall be prepared and coated with each lining system required (two plates per system). The preparation and coating of these plates shall be witnessed by Contractor and PetroVietnam and once approved, these plates shall provide the acceptance criteria for the quality of surface finish to be obtained during lining activities.

3.1.11 Contractor shall ensure that a qualified, technical representative from each coating sys-tem manufacturer is present during the following stages of coating application:

On site when coating application starts

On site when application of each new coating system starts

On site at least once each week during lining activities

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3.1.12 The manufacturer’s representative shall be capable of responding to any coating mate-rial or application problem and shall provide a written report to Contractor, after each visit, verifying that the lining activities are being performed in accordance with the manufacturer’s recommendations. Such reports shall be submitted to PetroVietnam for review.

4. FABRICATION REQUIREMENTS

4.1 Prior to commencing installation of concrete structures or fabrication of equipment or piping to be lined, Contractor shall review the detailed design drawings to ensure that the requirements of this Project Standard shall be met and allow successful application of the lining.

4.2 The design of concrete structures, equipment and piping shall allow access for surface preparation, application of the lining and venting of the fumes evolved. In equipment that is completely enclosed, there shall be at least one manhole of a minimum diameter of 460mm. Contractor shall ensure that additional openings required for lining activities are included in the detailed design of equipment or piping.

4.3 Surfaces to be lined shall have a smooth contour, free of discontinuities, crevices and sharp projections. All changes in contour shall be finished to a radius of not less than 4 mm.

4.4 Weld profile and joint design shall be as defined in BS 6374, Pt.4, and NACE Standard RP0178.

4.5 All welds and welded attachments shall be completed prior to commencing lining ac-tivities. No welding shall be performed on lined equipment or piping.

4.6 All welds on surfaces to be lined shall be continuous with a smooth transition from the weld metal to the base material and completely free from surface, or surface-breaking, flaws including, but not limited to:

Undercuts and cracks

Porosity and inclusions

Excessive reinforcement or penetration

Root or cap concavity

Lack of fusion.

4.7 For metallic materials, all surface irregularities, spatter and weld defects, including but not limited to those mentioned in paragraph 4.6, shall be remedied by welding and/or grinding. Caulking materials shall not be used.

4.8 For concrete structures, the surface shall be cleaned to remove laitence, oils, grease, dirt and other contaminants in accordance with the coating manufacturer’s recommenda-tions.

4.9 All connections to lined equipment and piping shall be flanged. Linings shall be suffi-ciently flat to allow adequate sealing when the joint is closed and shall continue through

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the bore of flanged connections and terminate as follows:

On flat face flanges the lining shall terminate not less than 6 mm beyond the

outer edge of the gasket.

On raised face flanges the lining shall either continue across the raised face and

terminate with a 45o bevel at the outer edge of the raised face or terminate in a

rebate provided in the inner edge of the raised face.

4.10 No external heating of any form, including trace heating, shall be applied to lined equipment or piping without specific PetroVietnam review and approval.

4.11 Precautions such as the use of clean overalls, gloves and overshoes shall be taken by personnel entering lined vessels and equipment during and after installation of the lining system.

4.12 Preconstruction Shop-Primer shall be completely removed by abrasive blast cleaning to grade Sa2½ according to ISO 8501 and primer shall be reapplied at field.

4.13 When a painting system is used for internal protection of equipment, it will be usually associated with cathodic protection by sacrificial anodes, unless specified otherwise. The chosen painting system should therefore be compatible with CP.

Where cathodic protection anodes are installed, care shall be taken to avoid damage to the coating at the attachment points and to ensure that the active surfaces of the anodes are not coated.

5. SURFACE PREPARATION

5.1 Equipment and piping shall be flushed out to remove deposits such as rust and loose scale before examination and preparation of the surface. Crusts formed by inhibitors used during hydrostatic testing shall be removed prior to degreasing and blast cleaning.

5.2 The entire surface to be coated shall be inspected to ensure freedom from imperfections and surface flaws as required in Section 4.

5.3 All surfaces shall be degreased in accordance with SSPC SP1, steam cleaning, deter-gent scrubbing or low-pressure water cleaning.

5.4 Following degreasing, all metal surfaces to be lined shall be blast-cleaned to BS 7079, Pt.A1/ISO 8501-1, Sa 2½ or NACE No.2/SSPC-SP10. All blasting abrasives shall be dry, clean and free from contaminants, and the air supply shall be free of water and oil. Surface profile height after blast cleaning shall be as recommended by the manufacturer of the coating selected.

Brushing, grinding or other power tool cleaning shall be limited to small areas when it is difficult to clean by abrasive projection. These surface preparations shall be submit-ted to PetroVietnam (or its representative) for approval.

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5.5 Abrasive blasting shall not be performed if the temperature of the steel surface is less than 3°Cabove the dew point or if the relative humidity is greater than 85%.

The surface to be coated shall have the specified surface preparation at the time the lin-ing is applied. If the surface is degraded or contaminated subsequent to surface prepara-tion and prior to lining application, the surface shall be restored before lining applica-tion.

Since freshly blasted surfaces are subject to immediate corrosion, particularly in areas of high humidity or salt atmospheres, no more surfaces shall be blast cleaned than can be prime coated before visible or detrimental rerusting occurs.

To eliminate the problem of high humidity, use of dehumidification equipment shall be considered.

5.6 Abrasives shall be sealed in watertight packaging. Any product delivered in defective packagingshall be rejected. Products must be stored sheltered from the elements.

The use of copper slag or sand is prohibited.

5.7 For concrete surfaces, the method of accomplishing the minimum surface profile shall be strictly in accordance with the coating manufacturer’s recommendations.

5.8 For equipment such as vessels or tanks, blast cleaning shall start at the top and proceed downwards.

5.9 All dust, spent abrasive and debris shall be removed by brushing and vacuum cleaning when surface preparation is complete. The surface shall be re-inspected to ensure that cleanliness is of the specified standard and that surface-breaking flaws are absent.

5.10 Concrete surfaces shall be inspected after preparation as follows:

Surface tensile strength in accordance with ASTM D4541. The minimum surface ten-sile strength shall be 2.1Mpa with concrete failure.

Surface cleanliness shall be verified in accordance with the methods in SSPC-SP 13 us-ing a patch test.

Moisture content in accordance with ASTM D4263. The coating manufacturer shall confirm the maximum moisture transmission rate at the surface.

6. LINING PROCESS

6.1 Coating work shall begin within two hours of the start of blast cleaning and while the surface is at the specified standard of cleanliness. Dehumidifiers shall be used as neces-sary to ensure compliance with this requirement.

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6.2 The steel surface shall be maintained at a temperature at least 3oC above the dew point and at a minimum of 10oC. The relative humidity of the air during coating shall not ex-ceed the maximum figure given by the coating manufacturer.

6.3 Over-coating delay times (if any) shall be strictly in accordance with the coating manu-facturer’s recommendations.

6.4 Application on metallic materials shall be by airless spray. Brushes may be used for stripe coating and where access for spraying is difficult. Rollers shall not be used.

6.5 Application on concrete structures shall be by airless spray or roller.

6.6 Curing agent shall be added to the base in accordance with the manufacturer’s printed recommendations, and thoroughly dispersed in the base by power stirring. On no ac-count shall coatings be thinned by adding solvent.

6.7 All welds, corners and edges shall receive an additional stripe coat of each layer in the coating system so as to ensure that the specified thickness is achieved.

6.8 The maximum thickness of each layer and of the final coating system shall not exceed that stated by the coating manufacturer. The minimum dry film thickness shall comply with SSPC-PA 2.

6.9 During and after lining the coated surfaces shall be maintained at the temperature and under the humidity recommended by the coating manufacturer until curing is complete.

Lining shall not be applied in rain, snow, fog, mist or ice coated surfaces.

Surface preparation and lining shall not be undertaken when there is the likelihood of a change in weather conditions which would result in air temperatures below those speci-fied or the deposition of moisture upon the surface.

Adequate ventilation of vessels during all coating operation shall be ensured.

Forced ventilation by means of blowers shall be used if necessary, but adequate pre-cautions shall be taken against introducing dust or dirt on to surfaces before they are coated or introducing dust or dirt into coating before they have properly cured.

7. LINING SELECTION

Once it has been determined that a lining will be used, the type of lining shall be deter-mined from TABLE 1. Coatings composition is given in Appendix A of the present specification

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TABLE 1

LINING SELECTION

Oper.

Temp

(°C)

PAINTING SYSTEM

TANK CONTENT Surf. Prep.

Number

Crude / CDU Residue

Base and shell up to 2m

50-70 Sa2½ L01

Hydrocarbons: Heavy Naphta, Reformate, RFCC Naphta, Flushing Oil

40 Sa2½ L02

Slop Oil 40-85 Sa2½ L03

Heavy Slops

Whole tank internal

40-85 Sa2½ L03

Light Slops 40-85 Sa2½

Industrial water: service water, demineral-ized water, firewater

30 Sa2½ L04

Ballast Water 25-70 Sa2½ L05

Potable Water 30 Sa2½ L06

Note: Linings for non-referred storage tanks shall be studied on a case-by-case basis. These coatings shall be in accordance with BS 6374, Pt.4 and shall be suitable for the intended service. Prior to painting works, details of coating system shall be forwarded to PetroVietnam (or its representative) for review and approval.

8. INSPECTION OF LININGS

8.1 General

8.1.1 Lining activities shall be inspected in accordance with BS6374, Pt.4, NACE Stan-dards RP0178 and RP0288 and this Project Standard to an approved procedure and quality plan. Lining procedures and quality plans shall be submitted in accordance with Section 10.

8.1.2 Contractor inspection shall include, but not be limited to:

Receipt and correct storage of coating materials

Standard of cleaning of substrates immediately prior to preparation including

chlorides according to ISO 8502-6 and 9, 20mg/m² maximum.

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Dew point, surface temperature and HR% before and during blast-cleaning and

coating operations

Absence of oil and condensed water in air for blast-cleaning, air pressure and

delivery rate(s)

Type, size, shape, dryness, cleanliness of abrasives and nozzle pressure during

blast cleaning

Metal defects, dust, and surface debris, on the surface after surface preparation

Surface preparation standard and surface profile

Correct preparation of coatings before application

Coating thickness, using approved thickness gauge, and cure

Holiday detection and tests for adhesion when required

Color appearance, and uniformity of coatings

Coating defects and their correct repair

Correct calibration of inspection instruments

8.1.3 Upon completion of each of the activities listed below, Contractor shall suspend work for the purpose of inspection:

Preliminary cleaning

Fettling of welds, edges and defects in the steel

Surface preparation

Application of each coat

Drying of coatings

Cleaning between coats

8.1.4 The ambient condition readings listed below shall be taken at least four times a day, in-cluding one set of readings before starting each day or night shift, to ensure that the re-quirements of this Project Standard are met:

Dry and wet bulb temperatures using hydrometer

Dew point

Relative humidity

Surface temperature

8.2 Inspection of Surface Preparation

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8.2.1 Surface cleanliness shall be inspected by means of visual comparators.

8.2.2 Surface profile of blasted surfaces shall be inspected by replica tape in accordance with NACE Standard RP0287, at least four times per day, for each grade of preparation per-formed.

8.2.3 Pressure of the blast-cleaning air stream shall be measured with a hypodermic pressure gauge inserted into the blast hose close to the nozzle (with the grit supply turned off).

8.2.4 Testing for presence of dust on surfaces to be over coated may be performed by press-ing the sticky side of a piece of transparent self-adhesive film (e.g. “Sellotape”) onto the surface, peeling the film off and pressing it onto a piece of clean white paper. The dust removed from the surface shall be examined and the tape retained as an inspection record.

8.3 Coating Thickness Measurement and Holiday Detection

8.3.1 Dry film thickness shall be measured using an approved thickness gauge calibrated for the range of thicknesses being checked, using ‘United States Institute of Standards and Technology, Certified Coating Calibration Standards for Non-magnetic Coatings on Steel’.

8.3.2 Thickness measurements shall only be performed when the coating is hard enough to resist indentation by the probe of the gauge. Alternatively, a shim of known thickness may be placed under the probe and its thickness deducted from the reading of the gauge, making due allowance for the effect on the reading of any solvent retained in the film.

8.3.3 The thickness of coatings applied to previously coated surfaces shall be measured with a wet film thickness (WFT) gauge, and the readings recorded as WFT and as the corre-sponding DFT.

8.3.4 Film thicknesses shall be reported as actually measured. They shall not be routinely re-ported as being those specified regardless of, or in the absence of, actual measured thickness.

8.3.5 The total dry film thickness of each coat shall be measured when fully hard. At least four readings shall be taken per square meter of applied coating, paying particular at-tention to areas which are more difficult to coat such as corners, undersides of mem-bers close to scaffolding, beam flanges, etc.

8.3.6 Continuity testing for holidays shall be performed using a high voltage detector in ac-cordance with NACE Standard RP0188. The minimum voltage shall be in accordance with the coating manufacturer’s recommendations but shall not be less than the “sug-gested” voltages in NACE Standard RP0188. No pinholes are permitted in the lining. All pinholes shall be identified and repaired in accordance with Section 9.

8.3.7 In case of dispute with respect to the integrity of the coating system, PetroVietnam re-serves the right to instruct Contractor to perform additional adhesion tests to ISO 4624/ASTM D4541 and cross-cut tests to BS EN ISO 2409.

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8.4 State of curing of primer and of each coat

The adhesion and integrity of the film are adversely affected if a lining has not been ap-plied and cured properly. Cure of catalyzed materials may be determined by exposure to a suitable solvent as recommended by the lining Manufacturer or measuring the hardness of the cured lining. The hardness shall be as recommended by the lining Man-ufacturer.

9. COATING REPAIRS

9.1 Coatings which fail to meet the requirements of this Engineering Standard shall be re-paired in accordance with NACE Standard RP0184 and the following:

Surface preparation for repair purposes shall include all the measures necessary

to achieve adequate adhesion between repair and original coatings

Repair coatings shall be of the same type and manufacture as the original coat-

ing

Defective or damaged coatings shall be removed by scraping, abrading with

coarse emery paper (80 or 100 grade), abrasive disc grinding or abrasive blast

cleaning until a surface suitable for over-coating is obtained and approved

Areas of damage to the primer, or damage exposing the substrate, sha ll be pre-

pared by spot blast cleaning in accordance with the requirements of Section 5.

Sound existing coatings at the periphery of damaged or defective areas shall be

prepared for over coating in accordance with all the relevant requirements of

this Project Standard to produce a 50mm margin of sound coating feathered to a

fine edge by sanding or abrasive disc grinding, taking care not to damage under-

lying coatings

All glossy or waxy surfaces and those whose over-coating delay time has ex-

pired shall be thoroughly degreased/de-waxed and rendered matt by abrading

with emery paper or light abrasive disc grinding prior to over-coating

9.2 All repaired areas shall be inspected in accordance with the requirements of Section 8.

10. DOCUMENTATION

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10.1 Contractor shall ensure that a detailed procedure and quality plan is submitted, in ac-cordance with Project Standard, covering all lining activities and shall include, but not be limited to, the following:

Safe storage and handling of materials, safe disposal of unwanted coatings and

expended abrasive, etc.

Performance of procedure qualification trials and details of the programme of

testing

Coating system to be used, together with current manufacturer’s data sheet

Initial preparation of welds (including dressing) and margins, removal of con-

tamination and residues (e.g. adhesive tape)

Preliminary inspection and cleaning

Blast-cleaning method, abrasive and equipment including removal of oil and

condensed water from the air stream, abrasive and replenishment

Blast-cleaning standard and surface profile, including measurement methods,

and dust removal methods

Liquid coating application method and film curing method, (if applicable), time

and temperature measurement method (if applicable)

Repair of damage to initial coatings including method of removal and testing of

repairs

Inspection procedures to cover the requirements of paragraph 8.1.2, make

and model of instruments, their calibration methods and frequency

Holiday detection procedure with details of the instrument(s) to be used

10.2 Contractor shall submit detailed records covering each equipment item and pipe spool subject to lining. As a minimum, each record shall be individually and uniquely numbered and shall contain, but not be limited to, the following informa-tion:

Coating manufacturer, including material certificates for each batch of resin and

a cross-reference to the equipment item or pipe spool where each batch was used

Coating applicator (if different to Contractor)

Weather conditions during all lining activities, including the requirements in

paragraph 8.1.4

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Surface preparation method, including the specified and actual surface prepara-

tion standard and surface profile

Abrasive manufacturer and type and grade of abrasive

Coating application method

Dry and wet film thickness for each coating layer

Curing time and conditions

Record of personnel engaged in lining

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APPENDIX

A SYSTEM SHEETS

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VIETNAM OIL AND GAS CORPORATION (PETROVIETNAM) PETROVIETNAM TECHNICAL SERVICES CORPORATION TWO ADDITIONAL CRUDE TANKS PROJECT INTERNAL CORROSSION RESISTANT LINING

Paint system L01

Crude / CDU Residue Tank / bottom + 2m from the bottom

Operating temperature: 50 to 70°C

Approved systems:

Surface preparation: Abrasive blasting Sa 2½ -Mean roughness G

Primer coat Intermediate Coat Final coat

AMERON AMERCOAT 91 150 µm N.A. AMERCOAT 91 150 µm

CARBOLINE (1) PLASITE 9570 150 µm N.A. PLASITE 9570 150 µm

HEMPEL HEMPADUR 15590 50 µm N.A. HEMPADUR 45540 200 µm

INTERNATIONAL INTERLINE 399 90 µm INTERLINE 399 90 µm INTERLINE 399 90 µm

JOTUN TANKGUARD STORAGE 125 µm N.A. TANKGUARD STORAGE 125 µm

SIGMAKALON SIGMAGUARD 260 l00 µm N.A. SIGMA NOVAGUARD 840 300 µm

(1) For CARBOLINE products surface preparation shall be blast cleaning to grade Sa3 according to ISO 8501-1.

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VIETNAM OIL AND GAS CORPORATION (PETROVIETNAM) PETROVIETNAM TECHNICAL SERVICES CORPORATION TWO ADDITIONAL CRUDE TANKS PROJECT INTERNAL CORROSSION RESISTANT LINING

Paint system L02

Hydrocarbons: Heavy Naphta, Reformate, RFCC Naphta,

Flushing Oil /bottom + 2m from the bottom

Operating temperature: up to 40°C

Approved systems:

Surface preparation: Abrasive blasting Sa 2½ -Mean roughness G

Primer coat Intermediate Coat Final coat

AMERON AMERCOAT 91 150 µm N.A. AMERCOAT 91 150 µm

(1) For CARBOLINE products surface preparation shall be blast cleaning to grade Sa3 accord-ing to ISO 8501-1.

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VIETNAM OIL AND GAS CORPORATION (PETROVIETNAM) PETROVIETNAM TECHNICAL SERVICES CORPORATION TWO ADDITIONAL CRUDE TANKS PROJECT INTERNAL CORROSSION RESISTANT LINING

Paint system L03

Slop Oil (1), Heavy Slops, Light Slops / whole tank internal

Operating temperature: 40 to 85°C

Approved systems:

Surface preparation: Abrasive blasting Sa 2½ -Mean roughness G

Primer coat Intermediate Coat Final coat

AMERON [HOLD] [HOLD] [HOLD]

CARBOLINE (2) PHENOLINE 1205 250 µm N.A. PHENOLINE 1205 250µm

HEMPEL HEMPADUR 15590 50 µm N.A. HEMPADUR 45750 200 µm

INTERNATIONAL INTERLINE 399 90 µm INTERLINE 399 90 µm INTERLINE 399 90 µm

JOTUN TANKGUARD STORAGE 125 µm N.A. TANKGUARD STORAGE 125 µm

SIGMAKALON PHENGUARD 930 l00 µm PHENGUARD 935 l00 µm PHENGUARD 940 l00 µm

(1) For Slop Oil tank, only bottom part and shell up to 2m shall be coated(2) For CARBOLINE products surface preparation shall be blast cleaning to grade Sa3 according

to ISO 8501-1.

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VIETNAM OIL AND GAS CORPORATION (PETROVIETNAM) PETROVIETNAM TECHNICAL SERVICES CORPORATION TWO ADDITIONAL CRUDE TANKS PROJECT INTERNAL CORROSSION RESISTANT LINING

Paint system L04

Industrial water: Service water, demineralized water, fire water/ whole tank internal

Operating temperature: up to 30°C

Approved systems:

Surface preparation: Abrasive blasting Sa 2½ -Mean roughness G

Primer coat Intermediate Coat Final coat

AMERON AMERCOAT 91 150 µm N.A. AMERCOAT 91 150 µm

CARBOLINE (1) PLASITE 7156 150 µm N.A. PLASITE 7156 150 µm

HEMPEL HEMPADUR 15590 50 µm N.A. HEMPADUR 45540 200 µm

INTERNATIONAL INTERLINE 982 15 µm INTERLINE 850 125 µm INTERLINE 850 125 µm

JOTUN TANKGUARD STORAGE 125 µm N.A. TANKGUARD STORAGE 125 µm

SIGMAKALON SIGMAGUARD 260 l00 µm N.A. SIGMA NOVAGUARD 840 300 µm

(1) For CARBOLINE products surface preparation shall be blast cleaning to grade Sa3 accord-ing to ISO 8501-1.

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VIETNAM OIL AND GAS CORPORATION (PETROVIETNAM) PETROVIETNAM TECHNICAL SERVICES CORPORATION TWO ADDITIONAL CRUDE TANKS PROJECT INTERNAL CORROSSION RESISTANT LINING

Paint system L05

Ballast water / whole tank internal Operating temperature: 25 to 70°C

Approved systems:

Surface preparation: Abrasive blasting Sa 2½ -Mean roughness G

Primer coat Intermediate Coat Final coat

AMERON AMERCOAT 91 150 µm N.A. AMERCOAT 91 150 µm

CARBOLINE (1) PLASITE 7156 150 µm N.A. PLASITE 7156 150 µm

HEMPEL HEMPADUR 15590 50 µm N.A. HEMPADUR 45540 200 µm

INTERNATIONAL INTERLINE 982 15 µm INTERLINE 850 125 µm INTERLINE 850 125 µm

JOTUN TANKGUARD STORAGE 125 µm N.A. TANKGUARD STORAGE 125 µm

SIGMAKALON PHENGUARD 930 100 µm PHENGUARD 935 100 µm PHENGUARD 940 100 µm

(1) For CARBOLINE products surface preparation shall be blast cleaning to grade Sa3 accord-ing to ISO 8501-1.

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VIETNAM OIL AND GAS CORPORATION (PETROVIETNAM) PETROVIETNAM TECHNICAL SERVICES CORPORATION TWO ADDITIONAL CRUDE TANKS PROJECT INTERNAL CORROSSION RESISTANT LINING

Paint system L06

Potable water tanks (1)/ whole tank internal

Operating temperature: up to 30°C

Approved systems:

Surface preparation: Abrasive blasting Sa 2½ -Mean roughness G

Primer coat Intermediate Coat Final coat

AMERON AMERCOAT 351 300 µm N.A. N.A.

CARBOLINE (2) PLASITE 4500 500 µm N.A. N.A.

HEMPEL HEMPADUR 85671 l00 µm HEMPADUR 85671 l00µm HEMPADUR 85671 100 µm

INTERNATIONAL INTERLINE 850 125 µm N.A. INTERLINE 850 125 µm

JOTUN TANKGUARD 412 250 µm N.A. TANKGUARD 412 250 µm

SIGMAKALON SIGMACOVER 280 50 µm N.A. SIGMAGUARD CSF 585 300 µm

(1) For potable water tanks lining, approval and/or test certificate from authorized organisation shall be provided.

(2) For CARBOLINE products surface preparation shall be blast cleaning to grade Sa3 accord-ing to ISO 8501-1.