W-ST-2000 Rev 5

TENGIZCHEVROIL

Specification

SPECIFICATION FOR WELDING, PWHT & NDE OF PIPING ,

Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

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TENGIZCHEVROIL

SPECIFICATION

Doc W-ST-2000 . W-ST-2000

THIS IS A CONTROLLED DOCUMENT

NO UN-AUTHORISED MODIFICATIONS .

WELDING, PWHT & NDE OF PIPING

,

This document is dual language. Ensure both versions are modified.

. ,

.

Note 1: Issued prior to secondary review process implementation.

5 09-02-2009 43 YK PH DLK SEE NOTE 1 ABOVE

4 28-10-2008 43 KR SKH JP

3 02-11-2000 17 CEB TC RW

2 03-10-2000 17 CEB DJB RW

1 18-02-2000 18 CEB DJB JKM

0 17-01-2000 18 CEB DJB JKM

REV DATE PAGES BY CHK MGR CONST REL MAINT OPS

REVISIONS PRELIM APPROVALS FINAL APPROVALS

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Specification


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REVISION DESCRIPTION SHEET

REV. .

PARA.

REVISION DESCRIPTION

1 GEN .

APPROVED FOR CONSTRUCTION PARAGRAPH & TABLE REVISED SPECIFICATION HEADER REVISED TO SHOW W-ST-2000 RE-FORMATTING OF DOCUMENT W-ST-2000

2 12

APPROVED FOR CONSTRUCTION PARAGRAPH & TABLE REVISED, SERVICE DETAILS NOW AS PER LINE CLASS SPECIFIC FOR PROGRAM 12 , , 12

3 12

APPROVED FOR CONSTRUCTION TABLE REVISED, CORRECTIONS MADE TO DESIGN TEMP. FOR CLASSES 150HDPE, 150HO4, 150HO5, 150PO9, & 300HO5 ONLY. ALL DESIGN TEMPS. ARE NOW AS PER LINE CLASSES IN SPECIFICATION X-000-L-2069 REV 7 OF 4/10/00. THESE ARE INDICATED BY (R3) IN SERVICE COLUMN. , : 150HO4, 150HO5, 150PO9, & 300HO5. , X-000-L-2069 . 7, 4/10/00. (R3).

4 2.2.1 DELETED 8.1.5 CORRECTED TYPO ERRORS 9.1.1 9.2.4 12 DELETED NOTE MAKING REFERENCE TO ATTACHMENT 1 , 1

12 TABLE

REVISED NDE% FOR CDE SERVICE FOR LINE CLASS 150P01 NDE% CDE 150P01 REVISED NDE% FOR LINE CLASS 150P09, ADDED LINE CLASS 300PF 150P09, 300PF

14 DELETED NOTE MAKING REFERENCE TO ATTACHMENT ,

5 12 TABLE ADDED NEW LINE CLASS 150HDPE GAS 150HDPE GAS

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Specification


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TABLE OF CONTENTS

1. SCOPE ........................................................................................................................... 4

2. APPLICABLE CODES & PROJECT SPECIFICATIONS ................................................. 4

3. PROCEDURE QUALIFICATION ..................................................................................... 5

4. WELDER QUALIFICATIONS .......................................................................................... 7

5. PREPARATION OF MATERIALS FOR WELDING.......................................................... 8

6. WELDING PROCESSES ................................................................................................ 9

7. WELDING ELECTRODES AND CONSUMABLES........................................................ 10

8. PREHEAT, INTERPASS TEMPERATURE & POST WELD HEAT TREATMENT ........ 11

9. GENERAL WELDING REQUIREMENTS...................................................................... 14

10. INSPECTION AND TESTING..................................................................................... 15

11. RADIOGRAPHY......................................................................................................... 17

12. NON DESTRUCTIVE TESTING & HEAT TREATMENT PER LINE CLASS............... 17

13. HARDNESS TESTING OF PRODUCTION WELDS................................................... 20

14. RECORDS ................................................................................................................. 21

TENGIZCHEVROIL

Specification


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1. SCOPE

1.1 This Specification covers welding, heat treatment and non-destructive testing procedures required for piping fabrication in a shop or on-site.

1.2 The following terminology is used within this Specification:

TENGIZCHEVROIL (TCO) A joint venture company between CHEVRON, MOBIL and the Government of Kazakhstan.

SUPPLIER Vendor, Seller, Manufacturer

CONTRACTOR Third party performing welding and other related operations.

1.3 Applicable Specifications for this pipe fabrication are stated in the Request for Bids, Purchase Orders and/or Contract, to which this Specification is a supplement.

1.4 Pipe welded fabrication performed by CONTRACTOR on-site shall be covered by an approved Welding Control Book (WCB).

2. APPLICABLE CODES & PROJECT SPECIFICATIONS

2.1 CODES

2.1.1 ASME B31.3 Chemical Plant and Petroleum Refinery Piping

2.1.2 ASME IX Welding and Brazing Qualifications

2.1.3 ASME V Non-Destructive Examination

2.2 STANDARD SPECIFICATIONS

2.2.1 DELETED

2.2.2 L-ST-2004 : Piping Fabrication Specification

2.2.3 L-ST-2003 : Piping and Material Classes

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Specification


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3. PROCEDURE QUALIFICATION

3.1 General

3.1.1 Welding Procedures are welding procedure specifications (WPS) accompanied by qualified welding procedure qualification records (WPQR).

3.1.2 Only reviewed and accepted WPS, with qualified WPQR are to be used for welding.

3.1.3 All welding procedure specifications (WPS) shall include welding details and appropriate test results (WPQR) in accordance with ASME IX and this Specification.

3.1.4 Qualification of all welding procedures for low temperature carbon steel, and low temperature austenitic stainless steel, shall include impact testing of both the weld and the HAZ in accordance with ASME B31.3 Tables 323.2.2 and 323.3.1.

3.1.5 Qualification of P1 Group 1 to P1 Group 2 materials is required in accordance with ASME IX QW-403.6 (Supplementary Essential Variable for Impact Tested Materials)

3.1.6 When using impact tested materials with thickness less than 10mm, the test temperature for impact testing sub-size specimens shall be calculated in accordance with ASME B31.3 Paragraph 323.3.4 (b). Where a test specimen has a width along the notch of at least 80% of the material tested thickness, no reduction in test temperature is required.

3.1.7 Qualification of welding procedures for sour service piping shall include a hardness traverse of a polished and etched cross-section of the weld. Hardness surveys shall be performed along two lines parallel to the outer and inner surfaces of the weld approximately 2mm from each respective surface. Measurements shall be taken in the weld metal, HAZ, and the base metal. Hardness values shall be as follows:

Base Material Weld Metal & HAZ = 220 HV10 Maximum

3.1.8 A welding repair statement covering both shallow and full weld thickness repairs shall be submitted for review and acceptance by the TCO prior to commencement of work.

3.1.9 Any revisions to welding documents shall be submitted for review and acceptance by the TCO

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3.2 Out Of Country (Tengiz) Work

3.2.1 SUPPLIER/ CONTRACTOR shall submit separate WPS, with their appropriate WPQR, to TCO within the time stated in the Request for Bids Purchase Orders and/or Contract, and prior to the commencement of fabrication and/or welding.

3.2.2 SUPPLIER/ CONTRACTOR standard WPS/WPQR forms are acceptable provided they meet the requirements and essential variables of ASME IX. All documents submitted shall be fully legible.

3.2.3 The SUPPLIER/ CONTRACTOR shall provide a summary chart listing the applicable Welding Procedure (WPS and relevant PQRs) for each piping class. Shall be submitted to TCO for approval

3.2.4 The SUPPLIER\ CONTRACTOR is responsible for the submittal of Sub-suppliers and/or Sub-contractors welding procedures to TCO. The SUPPLIER shall review all SUB-CONTRACTOR welding documents to ensure full compliance with TCO requirements, before onward transmission to TCO for acceptance.

3.3 In Country (Tengiz) Work

3.3.1 CONTRACTOR shall submit separate WPS, with their appropriate WPQR, to TCO prior to the commencement of fabrication and/or welding.

3.3.2 CONTRACTOR shall provide a summary chart listing the applicable Welding Procedure (WPS and relevant PQRs) for each piping class and shall be submitted to TCO for approval.

3.3.3 New procedures shall be qualified in accordance with this specification and the appropriate Project Work Instructions.

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4. WELDER QUALIFICATIONS

4.1 GENERAL

4.1.1 All welders shall be currently qualified to ASME IX.

4.1.2 For sour service piping all welders shall be qualified to a TCO accepted welding procedure that meets the hardness requirements of 3.1.7.

4.2 Out Of Country (Tengiz) Work

4.2.1 The SUPPLIER \ CONTRACTOR welder qualification records shall be reviewed and accepted by TCO or his Representative. The review and approval of the records shall be performed at the SUPPLIER\ -CONTRACTORS works by TCO or his Representative. Records shall NOT be submitted to TCO

4.3 In Country (Tengiz) Work By Contractor Or Sub-Contractors

4.3.1 All CONTRACTOR and Subcontractor welders shall be tested at the TCO facility, or other TCO approved location, at the Tengiz jobsite, the records shall be prepared by CONTRACTOR. Records of TCO approved CONTRACTOR welders from other Tengizchevriol projects shall be submitted to the project, for review and acceptance, prior to transfer.

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5. PREPARATION OF MATERIALS FOR WELDING

5.1 All welding preparation details are to be in accordance with approved Drawings, and WPS.

5.2 Carbon steel, low temperature carbon steel, and alloy material may be cut by sawing, machining, or grinding.

5.3 Non-galvanized carbon steel, and low temperature carbon steel may be cut by methods involving heating (i.e. flame or arc cutting) provided that the cut edge is machined or ground back sufficiently to provide an acceptable fit up. Flame cutting of alloy steels is not allowed.

5.4 Galvanized pipe shall be cut by cold sawing, grinding or machining only.

5.5 Surface defects in the pipe body shall be considered injurious if the defect extends below the specified minimum wall thickness or is more that 1.5mm in depth. Such defects shall be completely removed by grinding. If the remaining wall thickness after grinding is less than the minimum specified wall thickness (nominal minus mill tolerance), the pipe shall be rejected, or the section with the defect shall be cut out. Weld repairs are not permitted to the pipe body.

5.6 All edges shall be accurate to design requirement with a smooth, even, surface and all cutting dross, slag, etc, shall be removed with special care taken to ensure no foreign matter remains inside the pipe.

5.7 All finished pipe bevel profiles shall be in accordance with ASME B16.25 paragraph 3.1 Figures 2a and 3a.

5.8 Grinding wheels for alloy steel shall be resin bonded alumina or silicon carbide. Rubber bonded wheels shall not be used.

5.9 Only stainless steel wire brushes shall be used on stainless steel.

5.10 Grinding wheels, wire brushes and files shall be dedicated to a single material type (i.e. carbon or stainless steel), and shall not be interchanged.

5.11 Inside diameters at the end of components to be joined shall be aligned within ASME B31.3 requirements (1.5mm). Where misalignment is excessive the thicker wall shall be trimmed in accordance with ASME B31.3 Fig. 328.4.3. In no case shall such trimming result in a wall thickness less than the nominal thickness specified minus the applicable mill tolerance. Caution is required in the case or dissimilar strength materials, it may be preferred to increase the thickness of the thinner component by buttering with weld metal to a TCO accepted procedure. Particular cases shall be referred to TCO. Appropriate and acceptable methods shall be used to achieve alignment.

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6. WELDING PROCESSES

The following Welding Processes are accepted for use:

6.1 Shielded Metal Arc Welding (SMAW)

Gas Tungsten Arc Welding (GTAW)

Submerged Arc Welding (SAW)

6.2 Specific Welding Process Limits

6.2.1 SMAW

6.2.1.1 Use of cellulosic electrodes is permitted for root passes in groove and girth welds only. All other welding shall be performed using basic coated hydrogen controlled consumables. Rutile coated consumables shall be limited to a maximum wall thickness of 12 mm. Above this thickness basic coated consumables shall be used for the entire weld, except where cellulosic consumables are used for root passes.

6.2.1.2 The use of any other alternative welding process is subject to TCO approval.

6.2.1.3 VENDOR/SUB-CONTRACTOR should clearly identify the proposed welding process, work experience, level of automation and metal transfer mode.

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7. WELDING ELECTRODES AND CONSUMABLES

7.1 All welding electrodes/consumables shall be subject to approval as part of the WPS.

7.2 All welding consumables shall be supplied with Manufacturers Certification, and shall be individually identifiable. All SMAW and GTAW consumables shall be marked with specification and batch number. SAW, FCAW and GMAW wires shall have identity marked on each wire spool.

7.3 The electrode/consumable chemistry shall meet the requirements of the base material, and shall be selected such that the deposited weld metal exhibits mechanical properties equal to or in slightly in excess of the base material.

7.4 Welding consumables used on carbon steel in sour service piping classes shall not exceed a nominal Nickel content of 1.0% maximum.

7.5 All welding consumables shall, as a minimum, be stored and used in accordance with the manufacturers recommendations. Electrode reconditioning is permissible providing the consumable suppliers recommendations are followed precisely.

7.6 Carbon steel and alloy electrodes/consumables shall be stored separately.

7.7 For submerged arc welding, alloying is not permitted via the flux.

7.8 Austenitic stainless steel welding materials for pressure boundary and local bearing welds (pipe supports and anchors etc), shall produce deposits containing delta ferrite within the following ranges based upon chemical analysis and the WRC Delta Ferrite Diagram.

Non stabilised grades e.g. E308L, E316L : 3FN to 10FN

Stabilised grades e.g. E347 : 5FN to 10FN

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8. PREHEAT, INTERPASS TEMPERATURE & POST WELD HEAT TREATMENT

8.1 Preheat

8.1.1 Minimum preheats shall be in accordance with that specified by ASME B31.3 Table 331.1.1

8.1.2 Minimum Preheats shall be specified on the WPS, and shall be maintained over a distance of 75mm on either side of the weld.

8.1.3 The minimum preheat temperature shall be maintained throughout the welding cycle.

8.1.4 Minimum preheats shall also be used, to remove moisture from weld preparations and also for tack welding.

8.1.5 When the ambient temperature is below 4C (40F) the minimum preheat temperature shall be 38 C (100 F).

8.1.6 Preheat method shall preferably be electric resistance heaters, controlled by thermocouples. Fuel gas heating shall be limited to chill removal and drying operations only.

8.2 Interpass Temperature

8.2.1 Maximum interpass temperatures shall be stated on the WPS.

8.2.2 Maximum interpass temperature for austenitic stainless steels shall not exceed 175 degrees Celsius, this includes dissimilar welds between austenitic stainless steel and carbon steel. For carbon steels the maximum interpass temperature shall not exceed 250 degrees Celsius.

8.3 Post Weld Heat Treatment

8.3.1 General

8.3.1.1 Post Weld Heat Treatment (PWHT) shall be performed when indicated by the Piping Class, design drawings and/or this Specification.

8.3.1.2 For Amine and Caustic Service piping classes, all pressure retaining welds, and attachment welds to the pipe, shall be PWHT.

8.3.1.3 PWHT shall be in accordance with B31.3 Table 331.1.1 and this Specification.

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8.3.1.4 PWHT requirements shall be clearly identified on the WPS and relevant Drawings.

8.3.1.5 When required, PWHT shall be conducted at the range detailed on the approved WPS for 1 hour per 25mm (1.0) of thickness, but not less than 1 hour.

8.3.1.6 The use of fuel gas PWHT systems for heat treatments outside of a furnace is not permitted. When furnace heat treatment is used for PWHT of multiple welded items then direct flame impingement is not permitted.

8.3.1.7 For local PWHT the width of the applied heating element band shall not be less than :

BW = 5 x (R x t) 0.5 Where BW = band width

R = pipe radius to midwall

t = pipe wall thickness

The minimum band width shall not be less than 4 inches (100mm)

8.3.1.8 The width of insulation applied over the heating element band shall not be less than

IBW = 10 x (R x t) 0.5Where IBW = Insulation band width

R = pipe radius to midwall

t = pipe wall thickness

8.3.1.9 Sufficient thermocouples to monitor PWHT temperatures shall be attached by direct spot or resistance welding.

8.3.1.10 Pipework shall be adequately supported to prevent distortion during heat treatment. If distortion does occur, the situation shall be reported prior to any remedial action.

8.3.1.11 Exothermic PWHT is not allowed.

8.3.1.12 No welding of any kind shall be carried-out on pressure containing parts after final heat treatment.

8.3.2 Out of Country (TENGIZ) Work

8.3.2.1 A written PWHT procedure shall be submitted to TCO for review and acceptance. The procedure shall include essential details such as PWHT method, the procedure

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for calibration of equipment and location of thermocouples.

8.3.3 In Country (TENGIZ) Work by CONTRACTOR

8.3.3.1 A written PWHT procedure shall be submitted to TCO for review and acceptance. The procedure shall include essential details such as PWHT method, the procedure for calibration of equipment and location of thermocouples.

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9. GENERAL WELDING REQUIREMENTS

9.1 Welding Equipment

9.1.1 All equipment shall be maintained in good working order. Earth connections shall make good contact with the work, calibration checks shall be carried-out on all welding machines. Welding machines shall have operating electrical condition indicators such as ammeter and voltmeter, and there shall be portable metering equipment available to check that welding procedures and conditions are followed.

9.2 General

9.2.1 All welds shall be cleaned of foreign material (slag, etc) down to clean metal, both on completion of each pass and when the weld is finished.

9.2.2 Groove and girth welds shall be full penetration.

9.2.3 Limitations in B31.3 on weld reinforcement apply to internal as well as external surfaces. Welds must be free from projections beyond permitted reinforcement.

9.2.4 Permanently installed backing rings shall not be used. Root gap inserts that are completely melted and fused in the weld bead are acceptable provided that they have the same nominal composition as the filler metal.

9.2.5 Single pass welding procedures are not acceptable

9.2.6 A minimum of Two passes shall be used on socket and seal welds.

9.2.7 Vertical-down welding shall not be used without written approval.

9.2.8 Weld peening is not permitted.

9.2.9 Arc strikes outside the welding groove shall be removed by disc grinder, and minimum design wall thickness shall be maintained.

9.2.10 Any incidence of cracking in welds shall be reported to TCO. Welds that have cracks may be repaired or cut out depending on severity. A fully detailed repair/replacement procedure shall be submitted to TCO for review and acceptance before repairs are made.

9.2.11 Two repair attempts only shall be permitted for any repair, following this the complete weld shall be cut out and replaced.

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10. INSPECTION AND TESTING

10.1 General

10.1.1 Where inspection reveals a failure to meet design or code requirements, the fabricator shall be responsible for such repairs and further inspection as necessary to meet design or code requirements.

10.1.2 All welds shall require recorded visual examination prior to any other NDE. This key inspection activity shall be performed by a qualified welding inspector All Inspection and Testing shall be carried-out in accordance with ASME B31.3 and this Specification. The minimum NDE percentage level per line class is indicated in the Table at paragraph 12.

10.1.3 The fabricator shall be responsible to ensure that all welding and NDE satisfy the requirements of this Specification.

10.1.4 All welds shall be uniquely identified for NDE examination and/or records.

10.1.5 Where NDE level is less than 100%, the welds for NDE shall be selected to cover the work of each welder or welding operator.

10.1.6 All NDE shall be performed by personnel qualified to a recognised National or International Standard (e.g. PCN, ASNT Level II, etc.).

10.1.7 Branch connections shall be subject to complete visual examination as per ASME B31.3 Paragraph 344.2 and magnetic particle or dye penetrant examination of the final pass as per ASME B31.3 Paragraph 344.3 or 344.4. When specified on the piping class sheets, ultrasonic examination shall be performed. Weldolets shall have internal visual examination in all cases, Ultrasonic examination may be applied in addition for branch sizes 100 mm and above on a case by case basis at the discretion of the Inspector. Generally UT shall be used as an aid to the visual inspection specified and only when the thickness at the weld is over 19 mm.

10.1.8 All final non-destructive examination for acceptance shall be performed after any post weld heat treatment and prior to hydrostatic testing. NDE performed prior to PWHT (for materials and line classes requiring PWHT) shall only be considered as internal quality control.

10.1.9 Repairs to defects revealed by visual inspection shall be made before any other NDE is applied.

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10.2 Out of Country (TENGIZ) Work

10.2.1 NDE procedures, methods and techniques, shall be submitted to TCO for review and acceptance. Any subsequent revision to the documents shall also be submitted to TCO for review and acceptance.

10.3 In Country (TENGIZ) Work by CONTRACTOR

10.3.1 NDE procedures, methods and techniques, shall be submitted to TCO for review and acceptance. Any subsequent revision to the documents shall also be submitted to TCO for review and acceptance.

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11. RADIOGRAPHY

11.1 All butt welds shall be subject to radiography. (Either random or 100%, as specified in paragraph 12), to comply with the requirements of ASME B31.3.

11.2 Random radiography shall consist of radiography of the entire length of at least 5% of the welds. i.e. one weld in twenty shall be 100% radiographed.

11.3 Welds for random radiography may be selected by TCO, selection shall be such as to include a sample of each welders work, and cover all sizes used within the line class.

11.4 ASME B31.3 Category D fluid service shall be inspected in accordance with ASME B31.3 Paragraph 341.4.2.

11.5 All butt welds in Sour Service (NACE) including amine services shall be radiographed 100%. Use ASME B31.3 Severe Cyclic Service acceptance criteria.

11.6 Fluorescent intensifying screens are not permitted. .

11.7 Initial radiographs and written reports of interpretations shall be made as soon as possible after completion of individual welds to permit evaluation of welder skill and general weld quality in the early stages of fabrication.

11.8 For each welding procedure involving more than one welder, the first weld for each welder shall be radiographed, these welds are in addition to the 5% or other specified percentage.

11.9 The CONTRACTOR shall maintain an up to date record of radiographic weld quality performance that shall indicate repair rates and quality performance of individual welders.

12. NON DESTRUCTIVE TESTING & HEAT TREATMENT PER LINE CLASS

Piping Services Definition is as per Specification L-ST-2003(See also explanatory notes following table.)

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LINE CLASS (Socket & Butt Welds)

DESIGN TEMPC.

PIPE MATL. P No

PWHT PT RT NON PRESS ATTCH

SERVICE

150BO1 -20/+75 GRE - NO- 100% Visual N/A As line class 150HDPE -40 /+40 HDPE - NO 100% Visual N/A As line class (R3) 150HDPE GAS SKT BUTT (D)

-40 /+40 HDPE PE100 - NO 100% Visual and (D)

N/A As line class

150HO1 SKT (A) BUTT

-46 /+300 A333-6 & A671-CC60/22

1 NO 5% 0

0 5%

ALL LTCS

EXCEPT CDE

150HO1 SKT (B) BUTT

-46 /+300 A333-6 & A671-CC60/22

1 YES ALL

5% 0

0 5%

ALL LTCS

CDE DIETHANOLAMINE (BELOW 70C.)

150HO3 SKT BUTT

-46 /+300 A333-6 1 NO 5% 0

0 5%

ALL LTCS

As line class

150HO4 SKT BUTT

-46/+140 A333-6& A671-CC60/22

1 NO 5% 0

0 5%

ALL LTCS

As line class (R3)

150HO5 SKT (A) BUTT

-46/+100 A333-6 1 NO 5% 0

0 5%

ALL LTCS

EXCEPT CC,CCS & DHC (R3)

150HO5 SKT (B) BUTT

-46/+100 A333-6 1 YES ALL

5% 0

0 5%

ALL LTCS

CC, CCS & DHC (R3) 150HOG SKT

BUTT -46/+300 A333-6 1 NO 5%

0 0 5%

ALL LTCS

As line class

150H13 SKT BUTT

-46/+230 A333-6 1 NO 5% 0

0 5%

ALL TLCS

As line class

150K01 SKT BUTT

-46/+400 A333-6 & A671-CC60/32

1 YES ALL

100% 0

0 100%

ALL LTCS

As line class

150K02 SKT BUTT

-46/+200 A333-6 & A671-CC60/22

1 YES ALL

100% 0

0 100%

LTCS As line class

150NO1 SKT BUTT

-140 to +200

A312-316L A358-316L

8 NO 100% 0

0 100%

SS As line class

150PF -46/+100 PTFE lined LTCS(A333-6)

1 No 100% Visual Mech. Joint

Clamp As line class

150PF1 SKT BUTT

-46/+100 A312-316L A358-316L

8 No 5% 0

0 5%

SS As line class

150PO1 SKT BUTT

-46/+230 A312-316L A358-316L

8 No 5% 0

0 5%

SS EXCPT CDE- (R4)

150PO1 SKT BUTT

-46/+230 A312-316L A358-316L

8 No 100% 0

0 100%

SS CDE- DIETHANOLAMINE (R4)

150PO9 SKT BUTT

-140 to +210

A312-316L A358-316L

8 No 5% 0

0 5%

SS FCC & WF (R4)

150PO9 SKT BUTT

-140 to +210

A312-316L A358-316L

8 No 100% 0

0 100%

SS EXCEPT FCC & WF (R4)

150PE10

-40/+40 HDPE - NO 100% Visual N/A As line class

300HO1 SKT (A) BUTT

-46/+300 A333-6 & A671-CC60/22

1 NO 5% 0

0 5%

LTCS EXCEPT CDE

300HO1 SKT (B) BUTT

-46/+300 A333-6 & A671-CC60/22

1 YES ALL

5% 0

0 5%

LTCS CDE DIETHANOLAMINE (BELOW 70 DEG.C.)

300HO2 SKT BUTT

-46/+350 A333-6 & A671-CC60/22

1 NO 5% 0

0 5%

LTCS As line class

300HO3 SKT BUTT

-46/+350 A333-6 & A671-CC60/22

1 NO 5% 0

0 5%

LTCS As line class

300H04 SKT BUTT

-46/+120 A333-6 & A671-CC60/22

1 NO 5% 0

0 5%

LTCS As line class

300HO5 ALL BUTT

-46/+100 A333-6 1 YES 0% 5% LTCS As line class (R3)

300K01 SKT BUTT

-46/+300 A333-6 & A671-CC60/22

1 YES ALL

100% 0

0 100%

LTCS As line class

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LINE CLASS (Socket & Butt Welds)

DESIGN TEMPC.

PIPE MATL. P No

PWHT PT RT NON PRESS ATTCH

SERVICE

300K02 SKT BUTT

-46/+300 A333-6 & A671-CC60/22

1 YES ALL

100 0

0 100

LTCS As line class

300N02 SKT BUTT

-46/+300 A333-6 & A671-CC60/22

1 NO 100% 0

0 100%

LTCS As line class

300P09 SKT BUTT

-110 to +100

A312-316L 8 NO 100% 0

0 100%

316SS As line class

300 PF -46/+100 PTFE lined LTCS(A333-6)

1 NO 100% Visual Mech. Joint

Clamp As line class

600HO1 SKT (A) BT ,19mm

5% 0

0 5%

LTCS As line class

600HO1 SKT (B) BUTT

-46/+400 A333-6 & A671-CC60/22

1 YES ALL

5% 0

0 5%

LTCS As line class

600KO1 SKT BUTT

-46/+300 A333-6 & A671-CC60/22

1 YES ALL

100% 0

0 100%

LTCS As line class

600KO2 SKT BUTT

-46/+300 A333-6 & A671-CC60/22

1 YES ALL

100% 0

0 100%

LTCS As line class

600KO9 SKT BUTT

-46/+90 A333-6 & A671-CC60/22

1 YES ALL

100% 0

0 100%

LTCS As line class

600L01 SKT (A) BT, 19mm

5% 0

0 5%

3.5Ni As line class

600NO1 SKT BUTT

-110 to +120

A312TP316L& A358TP316L

8 NO 5% 0

0 5%

316SS As line class

600PO9 SKT BUTT

-46/+120 A312TP316L& A358TP316L

8 NO 5% 0

0 5%

316SS As line class

900HO1 -46/+70 A333-6 1 NO 0 100% LTCS As line class 900KO1 -46 /+375 A333-6 1 YES

ALL 0 100% LTCS As line class

900KO2 -46 /+375 A333-6 1 YES ALL

0 100% LTCS As line class

GOST -46 /+300 LTCS 1 NO 0 5% LTCS As line class

Notes : SKT = Socket Weld joints, BUTT and BT = Butt Weld Joints

(A) = Case A - No PWHT up to 12in NB,

(B) = Case B All sizes require PWHT

(C) = Case C PWHT only for over 14in NB

(D) = SKT electro fusion welds, BUTT heat fusion welds, ultrasonic test of butt welds as per 4.03-01-2003, 42-103-2003

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Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 20 of 43

13. HARDNESS TESTING OF PRODUCTION WELDS

13.1 Shop and Field Production Welds

13.1.1 For Sour Service, and when Post Weld Heat Treatment is required due to thickness, 100% of all shop and field production welds shall be hardness tested. (This does not include Caustic Service Classes in 150H01 & 300H01). All hardness testing shall be done after completion of PWHT.

13.1.2 Hardness testing for production welds only applies to the bulk weld metal.

13.1.3 Acceptance criteria shall be 200BHN (220Hv10) maximum.

13.1.4 Any weld with a value above this shall be re-tested at 3 additional locations and a written non-compliance report, detailing all of the values obtained, shall be issued to the COMPANY Inspector for disposition. Unless otherwise accepted by the COMPANY, the weld shall be heat treated again, and repeat tested for hardness. If the weld still fails to meet the hardness requirement it may be subject to rejection by the COMPANY Inspector, and shall then require replacement.

13.1.5 On tested welds that are cap welded by more than one welder, each welders weld deposit shall be sampled.

13.1.6 Hardness shall be measured by Telebrineller, Equotip or Microdur.

13.1.7 Equotip and Microdur values shall be the average of 5 readings at each location.

13.1.8 The testing equipment used shall be correctly calibrated on known similar metal samples immediately prior to the test session and repeated again after the session.

13.1.9 This operation shall be witnessed by COMPANY representative.

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Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 21 of 43

14. RECORDS

14.1 Records relating to welding and NDE shall be maintained on a daily basis. A computerised data storage system is preferred, such that all data pertaining to welding, NDE and quality is available and is updated daily. The output data may be used as part of the final documentation package required for each piping system.

14.2 All procedures and records relating to welding and NDE shall be available for review upon request.

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Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 22 of 43

1. ..................................................................................................... 20

2. ............................................... 20

3. .............................................................................. 20

4. ..................................................................................... 21

5. ..................................................................... 22

6. ...................................................................................................... 30

7. ........................................... 30

8. ,

................ 30

9. ................................................................................. 20

10. ......................................................................................... 21

11. ............................................................................................................. 22

12. 3 .............................................. 30

13. ................................................................. 30

14. ....................................................................................................... 30

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Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 23 of 43

1.

1.1 , , ..

1.2 : () , , .

, , , .

1.3 , / , .

1.4 , ().

2.

2.1

2.1.1 ASME B31.3

2.1.2 ASME IX

2.1.3 ASME V

2.2

2.2.1

2.2.2 L-ST-2004:

2.2.3 L-ST-2003:

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 24 of 43

3.

3.1

3.1.1 - (WPS), (WPQR).

3.1.2 WPS WPQR .

3.1.3 (WPS) (WPQR) ASME IX .

3.1.4 , 323.2.2 323.3.1 ASME B31.3.

3.1.5 1 , 1 2, ASME IX QW-403.6 ( ).

3.1.6 10 , 323.3.4 (b) ASME B31.1. , , 80% , .

3.1.7 , . , . 2 . , :

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 25 of 43

, 220 (HV10) .

3.1.8 .

3.1.9 .

3.2 ()

3.2.1 / , , / / .

3.2.2 SUPPLIER/ CONTRACTOR standard WPS/WPQR forms are acceptable provided they meet the requirements and essential variables of ASME IX. All documents submitted shall be fully legible.

3.2.3 WPS/WPQR / , ASME IX. .

3.2.4 / / . .

3.3 , ()

3.3.1 (WPS), (WPQR) / .

3.3.2 / ( ) . .

3.3.3 .

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 26 of 43

4.

4.1

4.1.1 ASME IX.

4.1.2 , , . . 3.1.7

4.2 ()

4.2.1 / /. .

4.3 , ()

4.3.1 , , . , , .

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 27 of 43

5.

5.1 .

5.2 , , .

5.3 ( ) , . .

5.4 , .

5.5 , 1,5 . . ( ), . .

5.6 , , .n., .

5.7 3.1 ASME 16.25, . 2 3.

5.8 . , .

5.9

.

5.10 , (.. ) .

5.11 ASME B31.3 (1,5 ). . 328.4.3 ASME B31.3.

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 28 of 43

. , . . .

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 29 of 43

6.

:

6.1 (SMAW)

(GTAW)

(SAW)

6.2

6.2.1 (SMAW)

6.2.1.1 . . 12 . 12 , , .

6.2.1.2 .

6.2.1.3 - , , .

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 30 of 43

7.

7.1 , (WPS).

7.2 . (SMAW) (GTAW) . (SAW, FCAW GMAW) .

7.3 / , , , .

7.4 , , , , , 1,0%.

7.5 , , . .

7.6 .

7.7 , .

7.8 , , ( , .) - - WRC.

(308(L), E316(L)): 3 10

(, 347): 5 10

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 31 of 43

8. ,

8.1 8.1.1

331.1.1 ASME 31.3.

8.1.2 (WPS), 75 .

8.1.3 .

8.1.4 .

8.1.5 4" (40"F), 38" (100"F).

8.1.6 , . .

8.2

8.2.1 (WPS).

8.2.2 175" , , . 250".

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 32 of 43

8.3

8.3.1

8.3.1.1 , , / .

8.3.1.2 , , , .

8.3.1.3 331.1.1 831.3 .

8.3.1.4 .

8.3.1.5 , , , 1 25 (1,0") , 1 .

8.3.1.6 , , . , .

8.3.1.7 () :

BW = 5 x (R x t) 0.5 BW =

R =

t =

- 4 (100 )

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Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 33 of 43

8.3.1.8 , , :

IBW = 10 x (R x t) 0.5 IBW =

R =

t =

8.3.1.9 .

8.3.1.10 . , - .

8.3.1.11 .

8.3.1.12 - .

8.3.2 . ()

8.3.2.1 . : , .

8.3.3 , ()

8.3.3.1 . : , .

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 34 of 43

9.

9.1 v

9.1.1 . , . , , , .

9.2

9.2.1 ( .n.) , , .

9.2.2 .

9.2.3 , 31.3 , , . , .

9.2.4 . , , .

9.2.5 .

9.2.6 .

9.2.7 .

9.2.8 .

9.2.9 . , .

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Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 35 of 43

9.2.10 . . .

9.2.11 , .

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Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 36 of 43

10.

10.1

10.1.1 , , .

10.1.2 - . . ASME 31.3 . . 12.

10.1.3 .

10.1.4 / .

10.1.5 , 100%, , n .

10.1.6 , (, PCN, ASNT , ..).

10.1.7 . 344.2 ASME 31.3 . 344.3 344.4 ASME 31.3. , . "" . 1 00 . , , 19 .

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Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 37 of 43

10.1.8 . ( , ) .

10.1.9 , , - .

10.2 . v ()

10.2.1 , . .

10.3 . ( )

10.3.1 , . .

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Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 38 of 43

11.

11.1 ( , 100%-, . 12) ASME 31.3.

11.2 , , 5% , .. 20 100%.

11.3 , .

11.4 , D ASME 31.3, 341.4.2 ASME 31 .3.

11.5 , (NACE), , 100%. - ASME 31.3 .

11.6 .

11.7 , , .

11.8 , , , . 5%- .

11.9 , .

12.

L-ST-2003 (. ).

TENGIZCHEVROIL

Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 39 of 43

( )

C.

P . (PWHT)

150BO1 -20/+75 - 100% .

150HDPE -40 /+40 - 100%

(R3)

150HDPE GAS (D)

-40 /+40 100 - 100% (D)

150HO1

(A)

-46 /+300 A333-6 A671-CC60/22

1 5% 0

0 5%

D

150HO1

(B)

-46 /+300 A333-6 A671-CC60/22

1

5% 0

0 5%

CDE

( 70C.)

150HO3

-46 /+300 A333-6 1 5% 0

0 5%

150HO4

-46/+140 A333-6 A671-CC60/22

1 5% 0

0 5%

(R3)

150HO5

(A)

-46/+100

A333-6

1

5% 0

0

5%

CC,CCS & DHC ( , , ) (R3)

150HO5

(B)

-46/+100

A333-6

1

5% 0

0 5%

, , (R3)

150HOG

-46/+300 A333-6 1 5% 0

0 5%

150H13

-46/+230 A333-6 1 5% 0

0 5%

150K01

-46/+400 A333-6 A671-CC60/32

1

100% 0

0 100%

150K02

-46/+200 A333-6 A671-CC60/22

1

100% 0

0 100%

150NO1

-140 +200

A312-316L A358-316L

8 100% 0

0 100%

150PF -46/+100 PTFE . LTCS(A333-6)

1 100% . .

150PF1

-46/+100 A312-316L A358-316L

8 5% 0

0 5%

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Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 40 of 43

( )

C.

P . (PWHT)

150PO1

-46/+230 A312-316L A358-316L

8 5% 0

0 5%

CDE- (R4)

150PO1

-46/+230 A312-316L A358-316L

8 100% 0

0 100%

CDE (R4)

150PO9

-140 +210

A312-316L A358-316L

8 5% 0

0 5%

. . (R4)

150PO9

-140 +210

A312-316L A358-316L

8 100% 0

0 100%

. . (R4)

150PE10

-40/+40 - 100% .

300HO1

(A)

-46/+300 A333-6 A671-CC60/22

1 5% 0

0 5%

CDE

300HO1

(B)

-46/+300 A333-6 A671-CC60/22

1

5% 0

0 5%

CDE

( 70C.)

300HO2

-46/+350 A333-6 A671-CC60/22

1 5% 0

0 5%

300HO3

BUTT

-46/+350 A333-6 A671-CC60/22

1 5% 0

0 5%

300H04

-46/+120 A333-6 A671-CC60/22

1 5% 0

0 5%

300HO5

-46/+100 A333-6 1

0% 5% (R3)

300K01

-46/+300 A333-6 A671-CC60/22

1

100% 0

0 100%

300K02

-46/+300 A333-6 A671-CC60/22

1

100 0

0 100

300N02

-46/+300 A333-6 A671-CC60/22

1 100% 0

0 100%

300P09

-110 +100

A312-316L 8 100% 0

0 100%

316

300 PF -46/+100 PTFE . LTCS(A333-6)

1 100% . .

600HO1 (A) BT ,19

5% 0

0 5%

600HO1

(B)

-46/+400 A333-6 A671-CC60/22

1

5% 0

0 5%

600KO1

-46/+300 A333-6 A671-CC60/22

1

100% 0

0 100%

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Specification


Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 41 of 43

( )

C.

P . (PWHT)

600KO2

-46/+300 A333-6 A671-CC60/22

1

100% 0

0 100%

600KO9

-46/+90 A333-6 A671-CC60/22

1

100% 0

0 100%

600L01 (A) BT, 19

5% 0

0 5%

3.5 Ni

600NO1

-110 to +120

A312TP316L A358TP316L

8

5% 0

0 5%

316

600PO9

-46/+120 A312TP316L A358TP316L

8

5% 0

0 5%

316

900HO1 -46/+70 A333-6 1

0 100%

900KO1 -46 /+375 A333-6 1

0 100%

900KO2 -46 /+375 A333-6 1

0 100%

-46 /+300 1

0 5%

: =

=

(A) = A - 12

(B) = B

(C) = C 14

(D) = , , 4.03-01-2003 , 42-103-2003.

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Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 42 of 43

13.

13.1 ,

13.1.1 , , , - , . ( , . 15001 30001.) , .

13.1.2 .

13.1.3 : 200 BHN (220 Hv 10)

13.1.4 . . , .

13.1.5 On tested welds that are cap welded by more than one welder, each welders weld deposit shall be sampled. , , .

13.1.6 Telebrineller, Equotip Microdur.

13.1.7 Equotip Microdur 5 .

13.1.8 .

13.1.9 .

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Doc No W-ST-2000 Rev 5 . W-ST-2000 . 5

Page 43 of 43

14.

14.1 , . - , , . .

14.2 , .

Documents

W-ST-2000 Rev 5