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PETRONAS TECHNICAL STANDARDS

DESIGN AND ENGINEERING PRACTICE

TECHNICAL SPECIFICATION

WELDABLE MARTENSITIC STAINLESS STEELLINE PIPE FOR USE IN OIL AND GAS OPERATIONS(AMENDMENTS/SUPPLEMENTS TO API SPEC 5LC)

PTS 31.40.20.36

DECEMBER 2009

2010 PETROLIAM NASIONAL BERHAD (PETRONAS)All rights reserved. No part of this document may be reproduced, stored in a retrieval system or transmitted in any form or by any means (electronic,

mechanical, photocopying, recording or otherwise) without the permission of the copyright owner.

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Revision History

Rev No. Reviewed by Approved by Date

1 Noor Syamiza Abdul MalikSyahrizad Mohd Yunus

Abu Bakar Mohd Arif

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PREFACE

PETRONAS Technical Standards (PTS) publications reflect the views, at the time of

publication, of PETRONAS OPUs/Divisions.

They are based on the experience acquired during the involvement with the design,

construction, operation and maintenance of processing units and facilities. Where

appropriate they are based on, or reference is made to, national and international standards

and codes of practice.

The objective is to set the recommended standard for good technical practice to be applied

by PETRONAS' OPUs in oil and gas production facilities, refineries, gas processing plants,

chemical plants, marketing facilities or any other such facility, and thereby to achieve

maximum technical and economic benefit from standardisation.

The information set forth in these publications is provided to users for their consideration

and decision to implement. This is of particular importance where PTS may not cover every

requirement or diversity of condition at each locality. The system of PTS is expected to besufficiently flexible to allow individual operating units to adapt the information set forth in

PTS to their own environment and requirements.

When Contractors or Manufacturers/Suppliers use PTS they shall be solely responsible for

the quality of work and the attainment of the required design and engineering standards. In

particular, for those requirements not specifically covered, the Principal will expect them to

follow those design and engineering practices which will achieve the same level of integrity

as reflected in the PTS. If in doubt, the Contractor or Manufacturer/Supplier shall, without

detracting from his own responsibility, consult the Principal or its technical advisor.

The right to use PTS rests with three categories of users :

1) PETRONAS and its affiliates.

2) Other parties who are authorised to use PTS subject to appropriate contractual

arrangements.

3) Contractors/subcontractors and Manufacturers/Suppliers under a contract with

users referred to under 1) and 2) which requires that tenders for projects,

materials supplied or - generally - work performed on behalf of the said users

comply with the relevant standards.

Subject to any particular terms and conditions as may be set forth in specific agreements

with users, PETRONAS disclaims any liability of whatsoever nature for any damage (including

injury or death) suffered by any company or person whomsoever as a result of or inconnection with the use, application or implementation of any PTS, combination of PTS or

any part thereof. The benefit of this disclaimer shall inure in all respects to PETRONAS

and/or any company affiliated to PETRONAS that may issue PTS or require the use of PTS.

Without prejudice to any specific terms in respect of confidentiality under relevant

contractual arrangements, PTS shall not, without the prior written consent of PETRONAS, be

disclosed by users to any company or person whomsoever and the PTS shall be used

exclusively for the purpose they have been provided to the user. They shall be returned after

use, including any copies which shall only be made by users with the express prior written

consent of PETRONAS. The copyright of PTS vests in PETRONAS. Users shall arrange for PTS

to be held in safe custody and PETRONAS may at any time require information satisfactoryto PETRONAS in order to ascertain how users implement this requirement.

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TABLE OF CONTENTS

PART I INTRODUCTION

1.1 SCOPE

1.2 DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS

1.3 DEFINITIONS

1.4 ABBREVIATIONS

1.5 CROSS-REFERENCES

1.6 ITEMS TO BE SPECIFIED/AGREED BY THE PRINCIPAL

PART II AMENDMENTS/SUPPLEMENTS TO API SPEC 5LC

1. SCOPE

1.1 COVERAGE

1.2 METRIC UNITS

1.3 MEASURING DEVICES

1.4 SPECIAL PROCESSES

1.5 CERTIFICATION

1.6 QUALITY SYSTEM

2. REFERENCED STANDARDS

2.1 GENERAL

2.3 EQUIVALENT STANDARDS

3. DEFINITIONS AND TERMS

3.1 HEAT

3.4 INSPECTION LOT

3.5 INSPECTION LOT SIZE

4. MISCELLANEOUS - RETENTION OF RECORDS

5. PROCESS OF MANUFACTURE AND MATERIAL

5.1 PROCESS OF MANUFACTURE

5.2 COLD EXPANSION

5.3 HEAT TREATMENT

5.4 TRACEABILITY

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6. CHEMICAL PROPERTIES AND TESTS

6.1 COMPOSITION

6.2 HEAT ANALYSES

6.3 PRODUCT ANALYSES

6.6 CHEMICAL ANALYSES PROCEDURE

7. MECHANICAL PROPERTIES AND TESTS

7.1 MECHANICAL PROPERTIES

7.2 TENSILE TESTS - GENERAL

7.3 TENSILE TESTING

7.4 LONGITUDINAL TENSILE TESTS

7.5 TRANSVERSE TENSILE TESTS

7.6 WELD TENSILE TESTS

7.13 FLATTENING TESTS

7.15 GUIDED-BEND TEST

7.17 WELD DUCTILITY TEST FOR ELECTRIC-WELDED PIPE

7.19 CENTRIFUGALLY-CAST HOMOGENEITY TEST

7.20 HARDNESS TESTS

7.21 RETESTS (HARDNESS)

7.22 CHARPY IMPACT TESTING

7.23 CHARPY RETESTS

8. SPECIAL TESTS

8.1 CTOD TESTING

8.2 RESIDUAL MAGNETISM

9. HYDROSTATIC TESTS

9.1 INSPECTION HYDROSTATIC TEST

9.3 TEST PRESSURES

9.4 SUPPLEMENTARY HYDROSTATIC TESTS

10. DIMENSIONS, WEIGHTS, AND LENGTHS

10.1 DIMENSIONS AND WEIGHTS

10.2 DIAMETER

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10.3 WALL THICKNESS

10.5 LENGTH

10.7 JOINTERS

10.8 PIPE ENDS

11. NON-DESTRUCTIVE INSPECTION

11.1 INSPECTION METHODS FOR WELDED PIPE

11.2 INSPECTION METHODS FOR SEAMLESS PIPE

11.3 INSPECTION METHODS FOR CENTRIFUGALLY-CAST PIPE

11.4 RADIOLOGICAL INSPECTION EQUIPMENT

11.5 FLUOROSCOPIC OPERATOR QUALIFICATION

11.6 OPERATOR CERTIFICATION

11.7 REFERENCE STANDARD

11.8 ISO WIRE PENETRAMETER

11.9 FREQUENCY

11.10 PROCEDURE FOR EVALUATING IN-MOTION OPERATION OF THE FLUOROSCOPE

11.11 ACCEPTANCE LIMITS

11.12 IMPERFECTIONS

11.13 DEFECTS

11.14 WELD REPAIR

11.15 ULTRASONIC AND ELECTROMAGNETIC INSPECTION OF WELDED PIPE

11.16 ULTRASONIC AND ELECTROMAGNETIC INSPECTION OF SEAMLESS PIPE

11.17 ULTRASONIC INSPECTION OF CENTRIFUGALLY-CAST PIPE

11.18 TESTING OF BEVEL FACES

11.19 NDT PERSONNEL QUALIFICATION

12. WORKMANSHIP, VISUAL INSPECTION, AND REPAIR OF DEFECTS

12.2 PURCHASER INSPECTION

12.4 VISUAL INSPECTION

12.5 DEFECTS

12.6 REPAIR OF DEFECTS

12.7 PROCEDURE FOR REPAIR OF WELD SEAMS OF SUBMERGED-ARC WELDED PIPE

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12.8 PROCEDURE FOR REPAIR OF WELD SEAMS OF ELECTRIC-WELDED AND INDUCTION-

WELDED PIPE

12.9 PROCEDURE FOR REPAIR OF WELD SEAM OF GAS METAL-ARC WELDED PIPE

12.10 GAUGE PIG

13. MARKING AND SURFACE TREATMENT

13.1 MARKING - GENERAL

13.2 LOCATION OF MARKINGS

13.3 SEQUENCE OF MARKINGS

13.5 DIE STAMPING

13.6 SURFACE TREATMENT

14. STORAGE, HANDLING, AND PACKING

14.1 HANDLING

14.2 STORAGE

14.3 PACKAGING

14.4 TRANSPORTATION

15. DOCUMENTATION

15.1 LANGUAGE

15.2 PRE-MANUFACTURING DOCUMENTATION

15.3 SHIPPING DOCUMENTATION

16. FIRST-DAY-PRODUCTION TESTS

16.1 GENERAL

16.2 NON-DESTRUCTIVE TESTING

16.3 CHEMICAL COMPOSITION

16.4 MECHANICAL TESTING

16.5 SPECIAL TESTS

APPENDIX A REPAIR WELDING PROCEDURE

A.1 GENERAL

A.2 REPAIR WELDING PROCEDURE QUALIFICATION

APPENDIX F PURCHASER INSPECTION

PART III REFERENC

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PART I INTRODUCTION

1.1 SCOPE

This new PTS specifies requirements and gives recommendations for the purchase of

both seam-welded and seamless weldable martensitic stainless steel (known

generically as weldable 13Cr and weldable Super 13Cr) line pipe for use in oil and

gas operations. The requirements are considered necessary to maintain technical

integrity of pipelines and to ensure that a suitable specification exists in the absence

of standardised grades of these materials.

NOTE: This PTS applies under non-sour conditions. The PETRONAS definition of sour service is given in PTS

31.22.20.31, however, as the application limits of these materials have not yet been determined, qualification

testing in project-specific environments may be required even when the expected H2S is

insufficient to give a sour service definition.

Part II of this PTS gives amendments and supplements to API Spec 5LC Third EditionJuly 1998 (Reaffirm 2006) and shall be read and used in conjunction with that

document. The section numbering in Part II follows that of API Spec 5LC. Where

sections of API Spec 5LC are not amended or supplemented by this PTS, they shall

apply as written.

NOTE: Both API Spec 5LC and this PTS adopt sampling as a method to determine batch compliance.

Nevertheless, all pipes supplied shall meet all requirements of this PTS.

1.2 DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS

Unless otherwise authorised by PETRONAS, the distribution of this PTS is confined tocompanies forming part of the PETRONAS Group or managed by a Group company,

and to Contractors and Manufacturers/Suppliers nominated by them.

This PTS is intended to be used for the purchase of line pipe for the construction of

oil and gas production flowlines and related facilities.

If national and/or local regulations exist in which some of the requirements may be

more stringent than in this PTS, the Contractor shall determine by careful scrutiny

which of the requirements are the more stringent and which combination of

requirements will be acceptable as regards safety, environmental, economic and

legal aspects. In all cases the Contractor shall inform the Principal of any deviation

from the requirements of this PTS which is considered to be necessary in order to

comply with national and/or local regulations. The Principal may then negotiate with

the Authorities concerned with the object of obtaining agreement to follow this PTS

as closely as possible.

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1.3 DEFINITIONS

1.3.1 General definitions

The Contractor is the party, which carries out all or part of the design, engineering,

procurement, construction, commissioning or management of a project, or operation ormaintenance of a facility. The Principal may undertake all or part of the duties of the

Contractor.

The Manufacturer/Supplier is the party, which manufactures or supplies equipment and

services to perform the duties specified by the Contractor.

The Principalis the party, which initiates the project and ultimately pays for its design and

construction. The Principal will generally specify the technical requirements. The Principal

may also include an agent or consultant authorised to act for, and on behalf of, the Principal.

The word shall indicates a requirement.

The word shouldindicates a recommendation.

1.3.2 Specific definitions

Defect (in NDT) A discontinuity or group of discontinuities whose indication(s)

do not meet specified acceptance criteria.

Electric welded Term used in API 5LC, which shall be understood to mean HFW.

Imperfection (in NDT) An interruption, which may be either intentional or

unintentional, in the physical structure or configuration of a

pipe.

Indication (in NDT) Evidence of an imperfection that requires interpretation to

determine its significance.

Pipe end Complete pipe segment of 100 mm length measured from the

end face of the finished pipe.

Plate or strip The flat starting material for welded pipe before forming into

the shape of a pipe.

Purchaser Term used in API Spec 5LC, which has the same meaning as

Principal.

Qualified Manufacturer A Manufacturer whose product has been previously

demonstrated to be suitable for the intended service, and

formally accepted by the Principal.

Radiological Term used in API Spec 5LC which has the same meaning asradiographic. The term radiographic is used in this PTS.

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1.4 ABBREVIATIONS

CTOD -Crack Tip Opening Displacement

DN -Nominal Diameter

FL -Fusion Line

GTAW -Gas Tungsten Arc Welding

HAZ -Heat Affected Zone

HFW -High Frequency Welded

ID -Internal Diameter

KV -Charpy V-notch impact energy

LBW -Laser Beam Welded

MT -Magnetic particle testing

NDT -Non-destructive testing

OD -Outside Diameter

PAW -Plasma Arc Welded

PT -Liquid penetrant testing

RT -Radiographic Testing

SAW -Submerged Arc Welding

SMAW -Shielded Metal Arc Welding

UT -Ultrasonic Testing WCL -Weld Centreline

WPS -Welding Procedure Specification

1.5 CROSS-REFERENCES

Where cross-references to other parts of this PTS are made, the referenced section

is shown in brackets. Other documents referenced by this PTS are listed in (Part III).

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1.6 ITEMS TO BE SPECIFIED/AGREED BY THE PRINCIPAL

The following information should be provided by the Principal at the enquiry stage

of the order:

-Nominal ID (and whether constant ID is required);

-Minimum design temperature; -Maximum design temperature;

- Design pressure;

-Service environment (gas, oil, water, multiphase, sour, non-sour);

-End preparation required if different from the standard API bevel;

-Whether pipe is to be used as mother pipe for induction bends;

-Whether mechanical property restrictions for reeling are to be applied;

-Whether elevated temperature tensile testing is required and the acceptance

criteria;

-Requirement for mechanical tests in simulated post-weld heat-treated condition;

-Length requirements if different from (Part II - 10.5) of this PTS;

-Whether supply of jointers is acceptable and the welding requirements if different

from this PTS;

-Whether the passage of a gauge pig is necessary; -Which of the

Manufacturer/Suppliers quality control procedures are to be submitted for

agreement;

-Time period for submission of contract quality plan;

-Level of inspection to be deployed by the Principal;

-Whether inspection reports in accordance with ISO 10474 type 3.2 are required

instead of inspection certificates in accordance with ISO 10474 type 3.1.B;

-Specific marking requirements;

-Specific packaging requirements;

-Other specific requirements amending or supplementing this PTS.

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PART II AMENDMENTS/SUPPLEMENTS TO API SPEC 5LC

1. SCOPE

1.1 COVERAGE

Delete this section and replace with the following:

This specification covers the supply of proprietary grades of welded and seamless

martensitic stainless steel line pipe by qualified Manufacturers/Suppliers. The

primary product is bevelled pipe having a standard API bevel. Should a different end

finish be required, it shall be clearly stated by the Principal in the contract document.

Manufacturers/Suppliers should have satisfactorily qualified their products in

accordance with the upstream qualification requirements detailed in report SIEP 97-

5763. Alternative data may also be considered by the Principal for qualifying a

Manufacturer/Supplier.

1.2 METRIC UNITS

Replace first paragraph with the following:

Metric units are used throughout this specification.

1.3 MEASURING DEVICES


The Manufacturer/Supplier shall control measuring devices within the requirements

of ISO 10012-1.

1.4 SPECIAL PROCESSES

Delete the part of the table pertaining to centrifugally-cast pipe. Delete reference to

repair welding procedures and add the following text:

Applicable special processes shall also include those identified and documented in

the quality assurance system of the Manufacturer/Supplier. Procedures for all special

processes shall be produced by the Manufacturer/Supplier and supplied to the

Principal (see Part IISection 15) when requested.

1.5 CERTIFICATION


Inspection certificates in accordance with ISO 10474 type 3.1.B shall be supplied

unless the Principal specifies inspection reports in accordance with ISO 10474 type

3.2., in which case the Manufacturer/Supplier shall issue and validate the inspection

reports and they shall be counter-validated by the Principals authorised

representative. The Manufacturer/Supplier shall provide a listing of all pipes supplied

detailing for each pipe the unique pipe number, heat number, test number,

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certificate number, length and weight. These data shall also be supplied to the

Principal on a computer disc in an agreed format.

Add new section:

1.6 QUALITY SYSTEM

The Manufacturer/Supplier should maintain and operate a quality management

system in accordance with ISO 9001 or ISO 9002 or an alternative standard if

approved by the Principal.

The quality assurance system shall employ statistical process control and have

documented procedures for its application.

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2. REFERENCED STANDARDS

2.1 GENERAL

Add the following: See also (Part III) of this PTS.

2.3 EQUIVALENT STANDARDS

Delete this section.

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3. DEFINITIONS AND TERMS

3.1 HEAT

Add to the existing section:

Where the size of the secondary refining vessel is less than that of the primary steel

producing vessel, the heat shall be considered to be the metal produced by a single

cycle of the secondary refining vessel.

3.4 INSPECTION LOT

Delete this section and replace with the following: A unit of pipes from the same heat

and, for batch heat treatment, heat treatment batch,

having the same dimensions.

3.5 INSPECTION LOT SIZE

Delete this section and replace with the following: For pipes with OD < 508 mm, the

maximum lot size shall be 100 pipes. For other sizes, the maximum lot size shall be

50 pipes.

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4. MISCELLANEOUS - RETENTION OF RECORDS

Amend the second sentence of the first paragraph as follows:

Contract records, and any others requiring retention by the Manufacturer/Supplier's

quality assurance system, shall be retained by the Manufacturer/Supplier and shallbe made available to the Principal upon request for a period of five years after

completion of the order.

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5. PROCESS OF MANUFACTURE AND MATERIAL

PROCESS OF MANUFACTURE

Delete the first paragraph and replace with the following: Pipe furnished to this

specification shall be seamless or welded manufacture as defined below. Weldedpipe shall be welded using the processes described below. Combination welded pipe

shall be subject to the limitations given in item 6.

The manufacturing process shall be described in accordance with the requirements

of (15.2.2) and the material produced by the process shall have been prequalified in

accordance with SIEP 97-5763.

Plates or strip shall be formed into pipe at ambient temperature.

a. Seamless and Centrifugally-Cast.

1. Seamless is defined as wrought tubular product made without a welded seam. It is

manufactured by hot working steel or, if necessary, by subsequently cold finishing

the hot worked product.

b. Welded processes

1. Without filler metal

Place the existing text under a new sub-heading:

a. High Frequency Welding

The HFW process shall employ a minimum frequency of 150 kHz.

b. Laser beam welding

A welding process that produces coalescence with the heat from a laser beam

focussed on the joint. The beam provide a concentrate heat source for narrow , deep

welds and high welding rates.

NOTE Some Manufacturer/Suppliers may use HFW equipment to provide preheating for the laser welding

process.

2. With filler metal

Delete sub-section (b) relating to Gas Metal-Arc Welding.

c. Pipe making processes

2. Centrifugally cast

Delete this sub-section.

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4. Submerged-arc.

Submerged-arc welded pipe is defined as having one longitudinal seam produced by

the automatic submerged-arc welding process as defined in 5.1.b.2.a. At least one

pass shall be deposited on the inside and one pass on the outside. The full length of

the weld seam shall be made by the automatic submerged-arc process, using run-on

and run-off tabs.

6. Combination welding

Delete or double and add the following to this section: Only PAW/GTAW

combination welded joints are permitted by this specification.

7.0 Double seam

Double seam welded pipe is not permitted.

Add new sub-section 8. as follows:

8. Laser beam welding.

Laser beam welded pipe is defined as having one longitudinal seam produced by the

LBW process as defined in (5.1.b.1.b).

d. Tack welding

Add the following: Tack welding shall be continuous. Add new item as follows:.

e. Jointer weld

A jointer weld is a circumferential seam weld that joints two piece of pipes together

f. Strip end weld

A strip end weld is a weld that joins strip ends together thus permitting continuous

longitudinal welding of the strip. Strip end welds shall not be included in the final

pipe length.

Table 2

Delete this table.

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5.2 COLD EXPANSION


Where appropriate, welded pipe shall be subjected to cold mechanical expansion.

Expansion shall be maintained between 0.8 % and 1.5 %.

The % expansion is defined as follows:

Da= OD (ID) after expansion

Db= OD (ID) before expansion

Sizing of seamless and welded pipe by cold reduction shall be limited to 1.5 %.

5.3 HEAT TREATMENT


All pipe shall be supplied in the quenched and tempered condition.

The coiled strip and/or pipe shall be heat treated in accordance with the

Manufacturer/Supplier's documented heat treatment procedure. Pipe temperatures

shall be verified by recorded measurement and the measurements shall be included

in the quality records.

The coiling temperature shall be agreed between the Principal and the

Manufacturer. The tolerance on the tempering soaking temperature shall be 15 C.

5.4 TRACEABILITY

Add the following:

The Manufacturer/Supplier's procedure shall be documented and shall ensure that

any length of pipe can be traced to the correct heat/lot and the associated

inspection certificates. Each pipe shall be assigned a unique identification number,

which shall either be stamped at both ends with low stress die stamps or stencilled

onto the pipe as specified by the Principal.

NOTE: Attention is drawn to clause 4 of ISO 10474 regarding supply of certificates by an intermediary processor.

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6. CHEMICAL PROPERTIES AND TESTS

6.1 COMPOSITION


The composition of the pipe determined by heat and product analysis shall be in

accordance with that specified by the Principal in the contract document. The

Principal shall specify a composition previously qualified by the

Manufacturer/Supplier in accordance with SIEP 97-5763. The primary elements,

which shall be determined, are:

C, Mn, P, S, Si, Ni, Cr, Mo, N, Cu, intentional additions.

6.2 HEAT ANALYSES

Delete first sentence and replace with the following:

The Manufacturer/Supplier shall furnish a certificate giving the heat analysis for

each heat of material applied to the order.

6.3 PRODUCT ANALYSES


Product analyses shall be provided to the Principal in the inspection document. The

frequency shall be two pipes per heat. Samples shall be taken from formed pipe or

tensile tests specimens extracted from formed pipe.

In addition to the base metal chemical analyses, an analysis shall be performed on

the weld metal of pipe welded with filler metal. This test shall be performed on the

first-dayproduction test pipes and once every 100 pipes during production.

The composition shall comply with that specified by the Principal in the contract

document within the permissible variations in product analysis given in (Table 3).

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Table 3

Delete existing Table 3 and replace with the following:

Table 3. Permissible variations for product analysis of 13 % Cr line pipe

Element Permissible variation

C 0.01

Mn 0.04

Si 0.05

P 0.005

S 0.005

Cr 0.15

Ni 0.10

Mo 0.10

N 0.03

Other alloying elemens 0.02

6.6 CHEMICAL ANALYSES PROCEDURES

Methods of Analysis methods and practices relating to chemical analysis shall be

performed in accordance with ASTM A751, Standard Methods, Practices and

Definitions for Chemical Analysis of Steel Products .Calibrations performed shall be

traceable to established standards.

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7. MECHANICAL PROPERTIES AND TESTS

7.1 MECHANICAL PROPERTIES


The pipe material shall conform to the following mechanical property requirements

at room temperature:

Tensile requirements

Yield

strength

(Rt0.5) range

Tensile strength

minimum

MPa

Elongation

minimum

%

Yield-to-tensile

ratio

maximum

550 - 700 700 20 0.90

NOTE: Rt0.5is the yield strength for 0.5 % total elongation.

7.2 TENSILE TESTS - GENERAL

Add the following:

Where guaranteed elevated-temperature properties are required, the Principal shall

state the test temperature and the property requirements in the contract

document. If post-weld heat treatment of field welds will be performed, additional

specimens shall be tested in the simulated post-weld heat-treated condition. Theacceptance criteria shall be as specified in (7.1). The Principal shall indicate whether

post-weld heat treatment is to be performed in the contract document. The

Manufacturer/Supplier shall advise the Principal of the correct post-weld heat-

treatment thermal cycle to maintain the required properties, including elevated-

temperature properties, of the pipe material.

7.3 TENSILE TESTING

a. Frequency

Delete this sub-section including Table 7, and replace with the following:

One transverse and one longitudinal tensile test from each first-day-production test

pipe and one pipe per lot shall be performed at room temperature.

In addition, if elevated-temperature testing is specified by the Principal, one

elevated-temperature transverse tensile test shall be performed on each first-day-

production test pipe and on one pipe per lot.

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7.4 LONGITUDINAL TENSILE TESTS


Longitudinal tensile test specimens shall be either non-flattened strip or round bar.

7.5 TRANSVERSE TENSILE TESTS

Delete first paragraph and items a. and b. and replace with the following:

Transverse tensile properties shall be determined by flattened strip specimen.

Where pipe dimensions preclude the use of a strip specimen, round bar specimens

may be used with the agreement of the Principal.

7.6 WELD TENSILE TESTS

Delete "as specified in Table 7" from the first sentence.

Delete the second sentence and replace with the following:

All weld reinforcement shall be removed.

7.13 FLATTENING TESTS

Add the following to the second paragraph: The acceptance criterion for the second

stage flattening shall be no evidence of lamination or other imperfections.

7.15 GUIDED-BEND TEST

Amend the equation in Figure 5 as follows:

7.17 WELD DUCTILITY TEST FOR ELECTRIC-WELDED PIPE

Delete section from the start of the 4th sentence and replace as follows:

No cracks or breaks shall occur in the weld or parent material during flattening of

the test specimen to 50 % of its original OD. Liquid Penetrant or microscopic

examination shall be used to confirm the absence of cracking. Cracks which originate

from the edge of the specimen and which are less than 6 mm long shall not be cause

for rejection. The test frequency shall be once per lot of pipes.

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7.19 CENTRIFUGALLY-CAST HOMOGENEITY TEST


7.20 HARDNESS TESTS


7.20.1 Seamless pipe

A full circumferential section shall be taken as a sample from each first-day-

production test

pipe and from one pipe representing each lot. Hardness measurements shall be

performed in accordance with ISO6507-1 on three polished and etched specimens

taken at 120o

intervals around the circumference of the sample. Traverses shall be as

shown in Figure 6 of API Spec 5LC.

For pipe with wall thickness of 8 mm and greater, three hardness traverses shall be

made on each specimen: 2 mm from the outer surface; mid-thickness; and 2 mm

from the inner surface. Each traverse shall contain three readings spaced at 5 mm

intervals. The average of each of the three readings shall be the hardness value. For

pipe with wall thickness less than 8 mm only two traverses, each 2 mm from the

surfaces shall be required.

The acceptance criterion shall be a maximum hardness value of 325 HV10.

7.20.2 Longitudinally welded pipe

a. Macrographic examination

Two full thickness transverse samples shall be extracted from the longitudinal weld

from each first-day-production test pipe and from one pipe representing each lot.

Test pieces from the samples shall be polished and etched for macro-examination in

accordance with ASTM E 340. The examination shall be performed at a minimum

magnification of x5. The acceptance criterion shall be no defects as defined by this

PTS. Photomacrographs shall be included in the inspection documents.

b. Hardness testing

A series of Vickers HV10 hardness indentations shall be made in accordance with EN

1043-1 on one of the test pieces prepared for macro-examination from each of the

first-day-production test pipes and from one pipe representing each lot. The

hardness indentation locations shall be agreed by the Principal. The indentations

shall be visible in the photomacrographs.

For pipe with wall thickness of 8 mm or greater, three traverses shall be made, one 2

mm from the outer surface, the second across the centreline of the weld and the

third 2 mm from the inner surface. The centreline traverse may be omitted for pipe

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of wall thickness less than 8 mm. The indentations shall be visible in the

photomacrographs. No individual hardness value shall exceed the following:

Base material 325 HV10 Weld metal and HAZ 350 HV10.

Add new section:

7.21 RETESTS (HARDNESS)

Should a maximum of one hardness value per pipe exceed 325 HV10, a further three

indents shall be made in the proximity of the original indents so that there is no

interference between them. All three extra readings shall have a hardness value less

than 325 HV10. Should any of these extra readings exceed 325 HV10 then a further

test ring shall be cropped from the pipe for hardness testing and, in addition, two

further pipes from the heat shall be hardness-tested. Should any of these further

readings exceed 325 HV10, then the heat shall be rejected or all individual pipes

shall be tested for acceptance.

Add new section:

7.22 CHARPY IMPACT TESTING

One pipe per lot shall be subjected to Charpy impact testing in accordance with ISO

148-2. Both absorbed energy and percentage shear area shall be measured. The test

specimens may be extracted from the test rings taken for tensile and hardness

testing. If stress relieving of the pipe is required by the Principal, the tests shall also

be performed on pipe in the stress-relieved condition.

Tests shall be performed on specimens taken from the mid-thickness position at the

locations shown in the following table:

Pipe type Location

Base

meta

WCL FL FL+2 FL+5

Seamless X

SAW X X X X X

HFW (1) X X X

PAW &

GTAW

X X X X

LBW (1) X X X

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(1) For HFW and LBW pipe, the FL+2 tests may be replaced by tests taken from the WCL+2 position

A set of three specimens from each pipe shall be tested at the following test

temperature:

Nominal Pipe WallThickness t Test TemperatureoCMax TestTemperature

t < 16 T 0

16 < t < 25 T-10 0

25 < t < 32 T-20 0

t > 32 T-30 0

If T is not specified by the Principal in the contract document, the test temperature

shall be taken as 0 C.

The descending hierarchy of specimen size and orientation shall be as follows:

Choice Orientation Size mm1 Transverse 10 x 10

2 Transverse 10 x 7.5

3 Transverse 10 x 5

4 Longitudinal 10 x 10

5 Longitudinal 10 x 7.5

6 Longitudinal 10 x 5

Lower choice specimens shall only be used when the higher choice is impractical.

For pipe of wall thickness less than 5 mm, Charpy testing may be omitted.

The acceptance criteria for the different specimen sizes and orientations shall be as

follows:

Size

mm

Orientation Min. average

absorbed energyJ

Min. individual

absorbed energyJ

10 x 10 Transverse 60 45

10 x 7.5 Transverse 48 36

10 x 5 Transverse 33 25

10 x 10 Longitudinal 90 68

10 x 7.5 Longitudinal 72 54

10 x 5 Longitudinal 50 38

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The individual minimum shear area for base metal shall be 100 %. For weld metal

and HAZ specimens, the individual minimum shear area shall be 50 %.

Add new section:

7.23 CHARPY RETESTS

If tests fail to meet the specified requirements, the sampled pipe shall be rejected.

Two further pipes from the lot shall then be tested. If the results of both of these

further tests are satisfactory no further testing is required and the lot shall be

accepted. Should one or both pipes be unsatisfactory, the lot of pipes shall be

rejected.

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8. SPECIAL TESTS


8.1 CTOD TESTING

If the pipe wall thickness exceeds 12.5 mm, CTOD testing shall be performed on the

three pipes selected for first-day-production tests. The test method shall be in

accordance with BS 7448 Parts 1 and 2. Rectangular Bx2B specimens shall be used

where B shall be as close to the full wall thickness as possible allowing for machining

requirements. The specimen orientation shall be NP. One set of three test pieces

shall be cut from each pipe with the notches placed at the weld centreline. A further

set of three specimens shall be cut with the notch placed in unaffected base

material.

If the pipe diameter prevents the extraction of 10 mm thick specimens, the

requirement for CTOD testing shall be waived.

The test temperature shall be T or 0 C whichever is lower. The acceptance criterion

shall be a minimum CTOD value of 0.15 mm.

8.2 RESIDUAL MAGNETISM

Three pipes per heat shall be tested for residual magnetism in their final delivery

condition. The maximum value of residual magnetism shall be 20 Gauss. Where the

residual magnetism of any sampled pipe exceeds 20 Gauss, the pipe shall be

subjected to degaussing operations and all remaining pipes from the heat shall thenbe checked and degaussed as necessary. The results of residual magnetism checks

shall be recorded and included as part of the inspection documentation.

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9. HYDROSTATIC TESTS

9.1 INSPECTION HYDROSTATIC TEST


Each length of pipe shall withstand, without leakage, an inspection hydrostatic test

to at least the pressure specified in (9.3). The test pressure shall be held for a

minimum of 15 seconds for all pipes. For all pipes, hydrostatic testing shall take

place after sizing operations and final heat treatment. For welded pipe, hydrostatic

testing shall be performed before non-destructive testing.

The water used for hydrostatic testing shall have a maximum chloride ion

concentration of 50 ppm. The Manufacturer/Supplier shall include the details of

monitoring and control of hydrotest water in a documented hydrotest procedure.

9.3 TEST PRESSURES


The test pressure for all sizes of pipe shall be such that the hoop stress calculated on

the basis of the minimum allowable wall thickness and including stresses from end

loading is at least 95 % of the specified minimum yield strength at room

temperature.

The Manufacturer/Supplier shall define the end load compensation factor in the

hydrotest procedure.

9.4 SUPPLEMENTARY HYDROSTATIC TESTS


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10. DIMENSIONS, WEIGHTS, AND LENGTHS

10.1 DIMENSIONS AND WEIGHTS

Modify Note 2 as follows: The Manufacturer/Supplier shall state the plain-end

weight correction factor in the weighing procedure.

Add the following:

Dimensional and weight inspection shall be performed on pipes after all other

operations have been performed.

10.2 DIAMETER

Delete this section and replace with the following: The diameter of the pipe shall be

within the tolerances specified in Table 9 as amended below.

Table 9 TOLERANCES ON DIMENSIONS AND WEIGHTS

Outside Diameter D

Pipe body

Delete the existing text and replace with the following:

For welded pipe, the outside diameter of the pipe body, as determined by taping the

circumference, shall not deviate by more than 0.75 % or 3 mm, whichever is less,

from the value given in Metric Table C-1 in Appendix C. For seamless pipe, the OD

tolerance shall be 3 mm.

Pipe ends


For welded pipe of diameter greater than DN 200 (8 inch), the average internal

diameter shall not deviate from the nominal internal diameter by more than 0.5 %

or 2.0 mm, whichever is less. For seamless pipe, the tolerance on average ID shall be

2.0 mm.

The nominal internal diameter is defined as the outside diameter D, given in Metric

Table C-1, minus twice the nominal wall thickness.

The internal diameter shall be measured using an internal gauge or a measuring

tape inside the pipe.

For pipe of DN 200 (8 inch) and below, the diameter tolerance may apply to the

outside diameter.

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Out-of-roundness


The ends of each pipe shall be tested for out-of-roundness using an internal ring

gauge of diameter 4.0 mm less than the nominal internal diameter. The gauge shallpass freely into each end of the pipe for a distance of 100 mm when held normal to

the pipe axis.

Out-of-roundness of the pipe body shall be determined from measurement of the

maximum and minimum OD at the same pipe cross-section. The acceptance

criterion shall be:

ODmax- ODmin < 3 mm

Add the following to Table 9:

Local irregularity of seam welds

The pipe ends and three positions equidistant along the pipe length shall be checked

for non-circularity at the position of the longitudinal weld using a template gauge to

be agreed with the Principal. The chord length of the template shall be a minimum

of 25 % of the OD or ID as applicable, up to a maximum of 300 mm.

At the pipe ends, the gauge shall be located internally. The local irregularity in

profile shall not exceed 1.5 mm measured between the gauge and the pipe.

10.3 WALL THICKNESS

Delete the second sentence and replace with the following: The tolerance on the

nominal wall thickness shall be: Seamless pipe -10 % +15 % Welded pipe -5 % +10 %

10.5 LENGTH

Delete this section and Table 10 and replace with the following:

Onshore lines: 95 % of shipped pipes for the order shall be between 11 and 12.2 m

long.

No pipe shall be shorter than 8 m.

No pipe shall be longer than 12.5 m.

Offshore lines: The average length of shipped pipes for the order shall be 12.2 m.

95 % of shipped pipes shall be between 11.9 and 12.5 m long.

No pipe shall be shorter than 11.6 m.

No pipe shall be longer than 12.8 m.

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10.7 JOINTERS

Delete first two sentences and replace with the following: Jointers shall only be

supplied when specified by the Principal.

10.8 PIPE ENDS

Add to this section:

The pipe shall be supplied with pipe ends cut perpendicular to the pipe axis. The

maximum deviation from the perpendicular shall be 0.5 % of the nominal outside

diameter, with a maximum of 1.5 mm. The entire end bevel shall be machined and

root faces shall not be brought into tolerance by filing and/or grinding.

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11. NON-DESTRUCTIVE INSPECTION

11.1 INSPECTION METHODS FOR WELDED PIPE

Add the following to the first paragraph:

Non-destructive inspection for acceptance purposes shall be performed after

hydrostatic testing of the pipe.

Delete items a. and b. and replace with the following:

Welded pipe shall be inspected full length in accordance with the standards

nominated in (Table A). Where the system leaves untested portions at the pipe

ends, these portions shall be subjected to a manual or semi-automatic UT

examination based on the same technique, test sensitivity, and test parameters as

used for the main test. For manual scanning, the scan speed shall not exceed 100

mm/s.

For HFW and LBW pipe, the shear wave probe angle shall be 45 3 and the

number and arrangement of probes shall be in accordance with the following:

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Wall

thickness

range

mm

Number of probes for zone of weld

(at both sides of the longitudinal weld)

inner zone mid portion outer zone

11.9 one none One

12.0 to

17.9

one one pair in

tandem centered

at midwall position

One

18.0 to

23.9

one two pairs in

tandem centered

at 40 % and 60 %

of thickness

one

mode of

operation

pulse echo tandem pulse echo

reference

reflector

N10 notch 3.0 mm

flat bottom hole

N10 notch

For SAW pipe, the number and arrangement of probes shall be in accordance with the

following:

Wall

thickness

rangemm

Number of probes for zone of weld

(at both sides of the longitudinal weld)

inner zone mid portion outer zone

11.9 one none one

12.0 to

17.9

one one centered at

midwall position

one

18.0 to

23.9

one two centered at

40 % and 60 % of

thickness

one

24.0 to29.9

onethree centred at30 %, 50 %, and

70 % of thickness

mode of

operation

pulse echo pulse echo

(NOTE 1)

pulse echo

reference

reflector

N10 notch 3.0 mm flat

bottom hole

N10 notch

NOTE 1: The angle of the mid portion probes shall be perpendicular to the weld bevel with a tolerance of 3.

Where the weld bevel is less than 15 (half aperture), the probes shall be used in the tandem arrangement. For

these steep angles, the probe angle shall be 45 3. Probe angle requirements are also shown in the standardslisted in Table

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11.2 INSPECTION METHODS FOR SEAMLESS PIPE


Seamless pipe shall be inspected full length in accordance with the standards

nominated in (Table A).

Where the system leaves untested portions at the pipe ends, these portions shall be

subjected to a manual or semi-automatic UT examination based on the same

technique, test sensitivity, and test parameters as used for the main test. For

manual scanning, the scan speed shall not exceed 100 mm/s.

11.3 INSPECTION METHODS FOR CENTRIFUGALLY-CAST PIPE


11.4 RADIOLOGICAL INSPECTION EQUIPMENT


Radiographic testing of welds shall be performed with X-ray equipment using fine-

grain type film and lead intensifying screens. The radiographic technique shall be in

accordance with ISO 12096. The image quality class shall be R1.

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11.5 FLUOROSCOPIC OPERATOR QUALIFICATION


Table AStandards for non-destructive inspection

Non-destructive inspection Specification Cross-

reference

Notes

All pipe

Ultrasonic testing for laminar

imperfections at pipe ends

ISO 11496 (11.15)

Magnetic Particle or Liquid

Penetrant testing of bevel faces

ISO 13664 or

ISO 12095

(11.18)

Seamless pipe

Ultrasonic testing for longitudinal

imperfections

ISO 9303 (11.15) &

(11.16)

Ultrasonic testing for transverse

imperfections

ISO 9305 (11.15) &

(11.16)

Ultrasonic testing of wall thickness ISO 10543 (11.15) &

(11.16)


imperfections in the pipe body

ISO 10124 (11.15) &

(11.16)

Welded pipe (except HFW)

Ultrasonic testing for longitudinal and

transverse imperfections in the weld seam

ISO 9765 (11.15) 1.4



ISO 12094 (11.15) 2.5


imperfections in the plate/strip

edges adjacent to the weld

ISO 13663 (11.15) 3.5

Testing of the weld seam at pipe ends

not covered by automatic testing: manual

UT or RT

ISO 9765 or ISO

12096

(11.15) or

(11.4) and

(11.11)

HFW pipe


imperfections in the weld seam

ISO 9303 or ISO

9764

(11.15)



ISO 12094 (11.15) 2


imperfections in the plate/strip

edges adjacent to the weld

ISO 13663 (11.15) 3



ISO 9303 (11.15)

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NOTES: 1. Full length RT of the weld seam in accordance with this PTS may be substituted.

2. The test may be performed on the plate/strip body prior to forming into pipe with a minimum

coverage of 25 %.

3. The test may be performed on the plate/strip edges in accordance with ISO 12094 prior to forminginto pipe.

4. Angle beam shear wave as follows: for longitudinal defect detection 50 to 70o

; for transverse defect

detection, X or K transmission, one pair of 50 to 70o

probes up to 11.9 mm thickness, two pairs of probes

for greater wall thickness. For on-bead scanning, the probe angle shall be 45 3o

.

5. Using a twin crystal probe with a focal length of between 25 % and 75 % of the thickness. The dead

zone shall be less than 25 % of the thickness at operational amplification.

11.6 OPERATOR CERTIFICATION


11.7 REFERENCE STANDARD


The reference standard shall be a wire penetrameter in accordance with ISO 1027.

11.8 ISO WIRE PENETRAMETER


The penetrameter shall be selected in accordance with the requirements of ISO

12096

Table 1. Image class R1.

11.9 FREQUENCY


11.10 PROCEDURE FOR EVALUATING IN-MOTION OPERATION OF THE FLUOROSCOPE


11.11 ACCEPTANCE LIMITS


Acceptance criteria shall be as specified in ISO 12096. The test report shall contain

the details specified in ISO 12096. If the Principal specifies that the radiographic test

procedure is to be agreed, items a to i of clause 9 of ISO 12096 may be stated in the

procedure and only items j to l included in the test report. Item k in the test report

shall include the actual sensitivity and density achieved.

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11.12 IMPERFECTIONS

Delete this section including Tables 12 and 13 and Figures 8 and 9.

11.13 DEFECTS


11.14 WELD REPAIR

Delete this section and replace with the following: Any weld repairs shall be

performed in accordance with the requirements of section 12.6 and shall be

examined using the same technique used for examining the weld seam.

11.15 ULTRASONIC AND ELECTROMAGNETIC INSPECTION OF WELDED PIPE

a. Equipment

Add the following:

Automatic ultrasonic equipment shall incorporate:

i. A facility for registration and recording of indications on paper and/or on a

retrievable medium without intervention by the operator;

ii. An automatic weld tracking system for correct positioning of the probes with

respect to the weld centreline without operator intervention. To allow alternative

systems, the Manufacturer/Supplier shall demonstrate that complete coverage is

achieved even when the probe drifts away from the weld seam;

iii. A device which monitors the effectiveness of the coupling. A deviation in excess

of 10 dB from the acceptable coupling situation shall indicate a loss of coupling;

iv. An audible warning/paint spray system that operates when the coupling is

unsatisfactory;

v. An automatic paint-marking device that activates when the ultrasonic echo

received exceeds the trigger/ alarm level.

From each pipe under test, an automatic "on-line" record shall be made without

operator intervention. For every pipe, a summary record shall be made showing

pipe identification number, time, examination results (including re-examinations)

and effectiveness of acoustic coupling.

b. Reference standards

Delete this item, including Figure 10, and replace with the following:

Reference standards and calibration shall be as specified in the appropriate ISO

specification and this PTS. For automatic UT, calibration shall be performed using areference standard and shall also be checked dynamically.

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Specific requirements for each NDT standard shall be as follows:

ISO Standard Specific requirements

ISO 9764 N10 notch shall be on both internal and external

ISO 10124 Reference standard shall be a flat-bottomed

ISO 11496 Tested band shall be a minimum of 50 mm and

shall overlap automatic tested pipe body area by

a minimum of 25 mm. Reference standard shall be

ISO 12094 Minimum coverage shall be 25 %. Edge band

shall be 25 mm from final plate/strip edge.

Reference standard shall be a 6 mm flat-bottomed

ISO 13663 Reference standard shall be a flat-bottomed

c. Acceptance limits

Delete this item, including Table 14, and replace with the following:

ISO Standard Acceptance limit

ISO 9303 L2C

ISO 9764 L3

ISO 10124 ISO 3183-3, Table D.2, sour

ISO 11496 No trigger/alarm

ISO 12094 B1 (body). E1 (edge)

ISO 13663 ISO 3183-3, Table D.2

11.16 ULTRASONIC AND ELECTROMAGNETIC INSPECTION OF SEAMLESS PIPE


a. Equipment

See (Part II11.15a).

b. Reference standards

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See (Part II11.15b) and the following:

ISO Standard Specific requirements

ISO 9305 Notch shall be on both internal and external

c. Acceptance limits

See (Part II - 11.15c) and the following:

ISO Standard Acceptance limit

ISO 9305 L2C

ISO 10543 As per ISO 10543

For ISO 9303 and ISO 9305, full coverage shall be achieved at the examination

sensitivity level and under all scanning speeds.

11.17 ULTRASONIC INSPECTION OF CENTRIFUGALLY-CAST PIPE


Add new sections:

11.18 TESTING OF BEVEL FACES

Testing of bevel faces shall be performed using MT in accordance with ISO 13664.When agreed by the Principal, PT in accordance with ISO 12095 may be used. The

acceptance criterion shall be no linear indications

11.19 NDT PERSONNEL QUALIFICATION

NDT personnel shall be qualified and certificated in accordance with ISO 11484 or an

equivalent standard agreed by the Principal. The Manufacturer/Supplier's NDT

operations shall be managed by personnel certificated to NDT Level 3 (UT being the

main method). All NDT procedures shall show the approval and qualification

number/expiry date of the NDT Level 3.

Shift supervision and calibration activities shall be undertaken by personnel

certificated to NDT Level 2 or higher in all of the methods being used by the

Manufacturer/Supplier. All other personnel performing NDT operations shall be

certificated to NDT Level 1 in the relevant method(s).

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12. WORKMANSHIP, VISUAL INSPECTION, AND REPAIR OF DEFECTS

12.2 PURCHASER INSPECTION

Delete this section and replace as with the following:

The requirements of Appendix F shall apply.

12.3 WORKMANSHIP

a. Dents

Delete third sentence of this sub-section and replace with the following:

All cold-formed dents with a sharp bottom gouge and all sharp gouges (without

dents) deeper than 1.0 mm shall be considered as defects.

b. Offset of plate edges

Delete this sub-section and replace with the following:

The maximum permitted radial offset shall be as follows:

Wall thickness, t,

mm

Maximum radial offset

mm

HFW Other welding

processes

10 0.5 1.0

10 < t 20 0.05 t 0.1 t

>20 - 2.0

d. Height of outside and inside weld beads - except ERW

Delete tabulation after first paragraph and replace with the following: The bead

height shall not lie outside the ranges specified below: -Outside: - 0, + 3 mm -Inside:

- 0, + 2.5 mm The inside weld bead shall be ground flush with the parent material

over the full length of the pipe end.

e. Height of flash of electric-welded pipe

Delete second paragraph and replace with the following:

The inside flash of HFW pipe shall not extend beyond the prolongation of the

original inside surface by more than 0.5 mm plus 5 % of the nominal wall thickness.

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12.4 VISUAL INSPECTION


The full internal and external surface of each finished pipe shall be visually examined

for surface defects. For internal examination of pipe DN 600 and larger, theinspector shall pass through the bore of the pipe. The Manufacturer/Supplier shall

control the visual inspection process with a documented procedure. The procedure

shall be qualified in accordance with ASME Section V - Article 9.

12.5 DEFECTS

b. Laminations and inclusions


The complete internal and external pipe surface and bevel faces shall be free ofsurface breaking laminations and inclusions.

Note : A lamination is defined as an internal metal separation creating layers

generally parallel to the surface

f. Disposition

1. Add the following to this item:

In all cases where repair by grinding has been carried out, the length of pipe

containing each grinding repair shall be re-inspected after the grinding operation bythe same inspection methods as the original inspection and by MT. The inspection

shall confirm freedom from defects and that the wall thickness is not less than the

minimum specified. Where manual ultrasonic testing for wall thickness is performed

it shall be in accordance with ASTM E 797.

2. Amend this item as follows: Repaired in accordance with 12.6.

3. Add the following to this item:

Where surface breaking defects are found in the pipe bevel, the pipe shall be cut

back and rebevelled. The new bevel shall be subjected to visual inspection and NDTin accordance with this PTS.

12.6 REPAIR OF DEFECTS

b. Weld seam of welded pipe


Defects in the weld seam of SAW pipe and pipe welded by GTAW or PAW using a

filler metal may be repaired. Repair of defects in the weld seam of other forms of

welded pipe shall not be permitted.

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Repair welding is not acceptable within 200 mm of the ends of the seam weld.

Repair welds shall be subjected to radiographic testing in accordance with (section

11).

No weld-repaired area shall be subjected to further repair.

c. Heat-treated pipe

Delete this sub-section and replace with the following: All repair welding (where

permitted) shall be performed prior to final pipe heat treatment.

Table 15

Delete this table.

12.7 PROCEDURE FOR REPAIR OF WELD SEAMS OF SUBMERGED-ARC WELDED PIPE

Delete this section and replace with the following: PROCEDURE FOR REPAIR OF ARC-

WELDED PIPE

The defect shall be completely removed and the cavity thoroughly cleaned. The

cavity shall be inspected by MT, or PT, to ensure that no remnants of the defect

remain.

The minimum length of the repair weld shall be 50 mm. The repair weld shall be

made by either SMAW or GTAW. The welding procedure shall be qualified in

accordance with Appendix A. Shielding gas containing hydrogen shall not be used.

12.8 PROCEDURE FOR REPAIR OF WELD SEAMS OF ELECTRIC-WELDED AND INDUCTION-

WELDED PIPE


12.8 PROCEDURE FOR REPAIR OF WELD SEAM OF GAS METAL-ARC WELDED PIPE


Add new section:

12.10 GAUGE PIG

If specified by the Principal, a gauge pig shall be passed through the following pipes

in their supply conditions:

i. All first-day-production test pipes.

ii. Two pipes from each working shift, one at the beginning and one at the end.

iii. First two pipes immediately after any adjustment or maintenance is carried out

on the mechanical expander.

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The gauge shall consist of two parallel, 6 mm thick circular plates each at least 98 %

of minimum pipe ID separated by a rigid bar of which the length is twice the pipe ID.

In order to pass the test, the gauge shall be passed through the pipe without

damaging the gauge plates. The material of the gauge plates shall be 316L or duplex

stainless steel or other material agreed by the Principal.

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13. MARKING AND SURFACE TREATMENT

13.1 MARKING - GENERAL

b.

Delete this sub-section and replace with the following: Marking of test pressure,

sizes and weights shall be in metric units. Add new sub-section:

c.

For pipes of DN 100 and above, stencil markings shall be block capitals of minimum

height 19 mm. For smaller pipe diameters, the character height shall be 10 mm or

more. The stencil colour shall be white and the stencil fluid shall be free from

chlorides.

13.2 LOCATION OF MARKINGS

b.


For pipe up to DN 400, paint stencilling shall be on the outer surface starting at a

point between 450 mm and 750 mm from the end of the pipe. For larger pipe, the

paint stencilling shall be on the inside surface, facing the pipe end, and finish 150

mm or more from the pipe end. In both cases the marking sequence shall be as

defined in (13.3).

c.


13.3 SEQUENCE OF MARKINGS

i. Supplementary requirements


Add the following new sub-sections:

PTS 31.40.20.36

Principal-specified markings

Additional marking requirements if specified by the Principal.

13.5 DIE STAMPING


If specified by the Principal, the unique pipe identification number shall be die-

stamped or vibro-etched on the bevel face at each end of the pipe. Low stress die

stamps shall be used.

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13.6 SURFACE TREATMENT

Delete this section and replace with the following: The pipe shall be pickled or grit-

blasted in accordance with the Manufacturer/Supplier's documented procedure.

Add new section:

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14. STORAGE, HANDLING, AND PACKING

14.1 HANDLING

During manufacture, storage and transportation, the pipes shall not come into

contact with loose carbon steel (e.g. swarf, filings etc.). Nylon slings or rubber-coated hooks/supports etc. shall be used for all handling operations.

14.2 STORAGE

All pipe shall be stored and packed in accordance with the Manufacturer/Supplier's

documented procedure which shall show calculations for stacking height and

arrangement. The pipe shall be fitted with end caps and shall have a dedicated

storage area fully segregated from other materials.

14.3 PACKAGING

Packaging shall be as specified by, or agreed with the Principal.

14.4 TRANSPORTATION

The transportation of pipe shall be as specified in the following:

i. API RP 5LW for marine transportation

ii. API RP 5L1 for railroad transportation The pipe shall not be transported by sea as

deck cargo. Add new section:

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15. DOCUMENTATION

15.1 LANGUAGE

All documentation submissions required by this PTS shall be in the English language.

15.2 PRE-MANUFACTURING DOCUMENTATION

The Manufacturer/Supplier shall submit to the Principal within the time period

specified in the contract document, a contract-specific quality plan and procedures

detailing all special processes, as described in (Part II1.4).

NOTE: Review of this documentation at the enquiry stage of the contract may assist this process.

15.2.1 Content of the quality plan

The format and issue of the quality plan shall be consistent with the document

control element of the Manufacturer/Supplier's quality system.

The content of the quality plan should be based on ISO 10005 and shall include the

following:

1. Identification of the product and contract to which the plan is to be applied;

2. Reference to API Spec 5LC and this PTS;

3. Location of steel making and pipe production;

4. Identification of the individuals responsible for controlling the activities

defined in the plan;

5. Identification of the individuals with the authority to interface directly with

the Principal;

6. Identification of all subcontractors;

7. The quality plans of all subcontractors;

8. All sequenced activities for the contract and references to the quality

system procedures and work instructions which will be applied to these

activities;

9. Copies of all the quality system procedures and work instructions covering

manufacturing production, test and inspection, special processes, control ofnonconforming product, handling, storage, packing, and shipping as

requested by the Principal;

10. Test and inspection frequency and acceptance criteria including the upper

and lower process control limits where statistical process control is

employed;

NOTE: Process control for chemical composition and dimensional parameters is generally based on upper and

lower control levels.

11. The location of each inspection and test point in the process sequence;

12. Points where the Principal has established its witnessing or verification

requirements.

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15.2.2 Special processes

The Manufacturer/Supplier shall provide procedures for those manufacturing

activities determined to be special processes and critical to the final mechanical and

dimensional integrity of the pipe. This shall include the following:

Seamless pipe

-pipe forming procedure; -pipe heat treatment procedure; -hydrostatic test

procedure;

- NDT procedures

HFW pipe

-Strip manufacturing procedure including details of rolling and any specialised

cooling or coil heat treatment. -Strip NDT procedures.

-Pipe making method including details of methods for preparing the edges of the

strip for welding and for control of misalignment of edges and pipe shape. Details of

the sizing operation should also be given.

-A detailed welding procedure specification which shall include the following:

methods for automatic control of welding parameters;

electrical or induction frequency;

details of welding power unit;

welding speed;

welding temperature;

shielding method/arrangement;

weld profiling. -Weld seam (or full body) heat treatment procedure.

Hydrostatic test procedure.

NDT procedures.

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LBW pipe

-Strip and pipe manufacturing procedure as required above for HFW pipe.

-A detailed welding procedure specification in accordance with ISO 9956-11. This

shall include all details of the methods used for automatic control and monitoring ofthe welding parameters, gas shielding method/arrangement and weld profiling.

-Pipe heat treatment procedure.

-Hydrostatic test procedure.

- NDT procedures.

Arc welded pipe

-Strip and pipe manufacturing procedure as required above for HFW pipe.

-Plate rolling details for pipe to be supplied in the as-rolled condition.

-Heat treatment procedure for plate heat treated before forming.

-Pipe manufacturing procedure.

-For SAW, GTAW and PAW pipe, a detailed welding procedure specification in

accordance with ISO 9956-2.

-Hydrostatic test procedure.

- NDT procedures.

The manufacturing procedures shall correspond with those used previously for the

manufacturing qualification tests (in accordance with SIEP 97-5763).

15.3 SHIPPING DOCUMENTATION

Each shipment shall be accompanied by a packing list; a pipe tally list; and, where

applicable, an original or certified copy of the Principal's inspection release note. The

pipe tally list shall show the pipe numbers with their corresponding heat number,

length, weight, and end dimensions.

Add new section:

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16. FIRST-DAY-PRODUCTION TESTS

16.1 GENERAL

At the commencement of production, three completely finished pipes of the first

day's production shall be selected at random for testing to verify that the proposedmanufacturing procedure results in fully acceptable pipe.

If more than one cast is used or pipes of more than one dimension are produced

then the three pipes shall be taken from different heats or size range. For pipe made

from coiled strip, the test pipes shall include pipes taken from each end of the coil.

The Principal shall make the selection when a representative is deployed.

The selected pipes shall be considered to be the production test pipes per lot as

required in this PTS.

These tests shall be repeated upon any change in manufacturing procedure or

significant interruption to the production programme.

16.2 NON-DESTRUCTIVE TESTING

a. Visual examination

All test pipes shall be examined visually for dimensional tolerances, and for surface

defects, in accordance with (Part II10, 11 and 12) respectively.

b. Magnetic particle testing

For seamless pipe only, each test pipe shall be submitted to magnetic particle

testing over the entire pipe body in accordance with ISO 13665. For welded pipe,

the weld seam shall be submitted to magnetic particle testing along its entire length.

Acceptance of indications shall be in accordance with test category M1 of ISO 13665

with the exception that linear indications, other than acceptable undercut in welded

pipe, shall be considered as defects.

c. Ultrasonic testing

The body of each pipe used for first-day production tests shall be examined byultrasonic testing in accordance with (Part II11).

d. Radiographic testing

For welded pipe, except HFW, the entire weld seam shall be inspected in accordance

with (Part II11).

16.3 CHEMICAL COMPOSITION

The chemical composition of each test pipe and weld (if applicable) shall be

determined in accordance with (Part II6).

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16.4 MECHANICAL TESTING

Mechanical tests shall be carried out on each test pipe as required by (Part II7). In

addition, for each first-day-production test pipe, a full Charpy impact transition

curve shall be produced, showing impact energy in joules and percentage shear

(fibrous) of the fracture surface, plotted against temperature, over a temperature

range sufficient to produce fracture appearance from 10 % to 100 % fibrous shear.

16.5 SPECIAL TESTS

CTOD tests in accordance with (Part II - 8.1) and residual magnetism checks in

accordance with (Part II8.2) shall be performed on each test pipe.

APPENDIX A REPAIR WELDING PROCEDURE

A.1 GENERAL Delete sub-sections a., b., and c. and replace with the following:

Shielded metal-arc using low-hydrogen electrodes.

Gas tungsten-arc. Add the following: The composition of the repair weld metal shall

match that of the weld seam.

A.2 REPAIR WELDING PROCEDURE QUALIFICATION


A repair welding procedure specification shall be prepared in accordance with ISO

9956-2. A fully simulated repair weld shall be made on a pipe piece of sufficient

length to accommodate extraction of all the required test specimens. Qualification

shall be by the visual, non-destructive, and destructive testing of the test weld seam

as specified in this PTS for the original seam weld.

Repair weld metal shall not be exposed on the inner surface of the pipe unless it has

been heat-treated.

A.2.2 Mechanical testing


The repair welding procedure shall be subject to the same testing required for the

original weld by (Part II - 7 and 8).

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APPENDIX F PURCHASER INSPECTION

F.1 INSPECTION NOTICE

Delete this section and replace with the following: The Manufacturer/Supplier shall

give five working days' notice to the Principal of the production run or inspection or

test, which is to be witnessed. Add the following:

F.5 SUMMARY OF PRINCIPAL'S INSPECTION PROFILES

The Principal shall indicate the type of inspection to be performed in the contract

document.

SEQUENCE

NO

INSPECTION ACTION FULL

RUNNING

LIMITED

RUNNING

FULL

FINAL

LIMITED

FINAL

1.0 ATTENDANCE IN THE

MILL DURING

Yes Spot No No

2.0 CONTRACT QUALITY PLAN RA RA RA RA3.0* PRE-

MANUFACTURING

E * E * E *

4.0 MILL PRODUCTION

4.1 Pipe rolling SWA SWA

4.2 Heat treatment FW/RR FW/RR RR RR

4.3 Sampling test pieces E E

4.4 Physical properties FW/RC FW/RC RC RC

4.5 Hydrostatic test FW/RC FW/RC RC RC

4.6 NDT for acceptance FW/RR FW/RR RR/RC RR/RC

4.7 Dimensional inspection SW/SE/RR SW/SE/RR SE/RR SE/RR

4.8 Marking SW SW SW SW

4.9 Packing SW SW SW SW

5.0 DOCUMENT REVIEW

5.1 Production records RR RR RR RR

5.2 Tally lists RR RR RR RR

5.3 Inspection reports RC RC RC RC

5.4 Release note E E E E

6.0 FIRST DAY

PRODUCTION

W/RC W/RC RC RC

Abbreviations and notes:

E Execution by Principal's Inspector.

FW Witness first operation for compliance, including check of calibrations; subsequently random inspection, review document

and endorse for acceptance.

RA Review document and endorse for acceptance.

RC Review certificate and endorse for acceptance.

RR Review production records and endorse for acceptance.

SE Random execution by Principal's Inspector.

SW Random witness by Principal's Inspector.

SWA Random witness applicable when pipe forming is part of finishing line (e.g. there is no additional heat treatment on a

different line).

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W Full witness.

*If specified in the contract document.

PART III REFERENCES

In this PTS, reference is made to the following publications:

NOTE: Unless specifically designated by date, the latest edition of each publication shall be used, together with any

amendments, supplements, or revisions thereto.

PETRONAS STANDARDS

Index to PTS publications and standard specifications

PTS 00.00.05.05

Pressure vessels (amendments/supplements

PTS 31.22.20.31

ASME Section VIII, Division 1 and Division 2)

Qualification test requirements for weldable 13Cr line pipe

SIEP 97-5763, September 1997

AMERICAN STANDARDS

Specification for CRA line pipe API Spec 5LC, 3rd July 1998, Reaffirm Aug 2008

Recommended practice for railroad transportation of line pipe API RP 5L1

Recommended practice for transportation of line pipe on API RP 5LW

barges and marine vessels

Issued by: American Petroleum Institute

Publications and Distribution Section

1220 L Street, Northwest Washington, DC 20005

USA.

Boiler and pressure vessel code, Section V, ASME V

nondestructive examinationIssued by: American Society of Mechanical Engineers

345 East 47th Street New York NY 1001USA

Standard test mthod for macro-etching metals and alloys ASTM E 340

Standard practice for measuring thickness by manual ASTM E 797

ultrasonic pulse-echo contact method

Issued by: American Society for Testing and

Materials

100 Bar Harbor Drive, West Conshohocken, PA 19428-2959

USA

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BRITISH STANDARDS

Fracture mechanics toughness tests - Part 1. BS 7448 Part 1

Method for determination of KIC, critical CTOD

and critical J values of metallic materials

Fracture mechanics toughness tests - Part 2. BS 7448 Part 2

Method for determination of KIC, critical CTOD, and

critical J values of welds in metallic materials

Issued by: British Standards Institution

389 Chiswick High Road

London W4 4AL

UK

EUROPEAN STANDARDS

Destructive tests on welds in metallic materials. EN 1043-1

Hardness testingPart 1: Hardness tests on arcwelded joints

Issued by: Comit Europen de Normalisation

Rue de Stassart 35

1050 Brussels

Belgium

Copies can also be obtained from national standards organizations.

INTERNATIONAL STANDARDS

SteelCharpy impact test (V-notch) ISO 148

Radiographic image quality indicators for non ISO 1027

destructive testingprinciples and identification

Petroleum and natural gas industriesSteel pipe for ISO 3183-3

pipelinesTechnical delivery conditionsPart 3: Pipes of

requirement class C

Metallic materials - Vickers hardness test - Part 1: Test method ISO 6507-1

Quality systems - Model for quality assurance in design, ISO 9001

development, production, installation and servicing

Quality systems - Model for quality assurance in production, ISO 9002

installation and servicing

Seamless and welded (except submerged arc-welded) steel tubes 1SO 9303

for pressure purposes - Full peripheral ultrasonic testing for the

detection of longitudinal imperfections

Seamless steel tubes for pressure purposesFull peripheral ultrasonic 1SO 9305

testing for the detection of transverse imperfections

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Electric resistance and induction welded steel tubes for ISO 9764

pressure purposes - Ultrasonic testing of the weld seam

for the detection of longitudinal imperfections

Submerged arc-welded steel tubes for pressure purposesUltrasonic ISO 9765

testing of the weld seam for the detection of longitudinal and/or transverseimperfections

Specification and approval of welding procedures for metallic materials ISO 9956-2

Part 2: Welding procedure specification for arc welding, Amendment 1

Specification and approval of welding procedures for metallic

materialsPart 11: Welding procedure specification for laser beam welding ISO 9956-11

Quality management - Guidelines for quality plans ISO 10005

Quality assurance requirements for measuring equipment ISO 10021-1Part 1:Metrological confirmation system for measuring equipment

Seamless and welded (except submerged arc-welded) steel tubes for ISO 10124

pressure purposes Ultrasonic testing for the detection of laminar imperfections

Steel and steel productsInspection documents ISO 10474

Seamless and hot-stretch-reduced welded steel tubes for ISO 10543

pressure purposes - Full peripheral ultrasonic thickness testing

Steel tubes for pressure purposes - Qualification and certification of ISO 11484

non-destructive testing (NDT) personnel

Seamless and welded steel tubes for pressure purposesUltrasonic ISO 11496

testing of tube ends for the detection of laminar imperfections

Welded steel tubes for pressure purposes Ultrasonic testing for the ISO 12094

detection of laminar imperfections in strips/plates used in the manufacture

of welded tubes

Seamless and welded steel tubes for pressure purposes ISO 12095

Liquid penetrant testing

Submerged arc-welded steel tubes for pressure purposes ISO 12096

Radiographic testing of the weld seam for the detection of imperfections

Welded steel tubes for pressure purposes Ultrasonic testing of the area ISO 13663

adjacent to the weld seam for the detection of laminar imperfections

Seamless and welded steel tubes for pressure purposesMagnetic particle ISO 13664

inspection of the tube ends for the detection of laminar imperfections

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Seamless and welded steel tubes for pressure purposes ISO 13665

Magnetic particle inspection of the tube body for the detection of surface imperfections

Issued by:

International Organisation for Standardisation 1, rue de Varemb

CH-1211 Geneve 20Switzerland

Copies can also be obtained from national standards organizations

Documents

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