BS 4515-2-1999 陆地和近海铺设的钢管焊接规范 双相不锈钢管道.pdf

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 4515-21999 ICS 23.040.10; 25.160.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Welding of steel pipelines on land and offshore Part 2 Duplex stainless steel pipelines Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Mar 06 100154 GMT0000 2007, Uncontrolled Copy, c BSI This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 April 1999  BSI 04-1999 First published October 1969 Second edition March 1984 Third edition September 1995 Fourth edition February 1996 Fifth edition April 1999 The following BSI references relate to the work on this standard Committee reference WEE/21/7 Draft for comment 97/713527 DC ISBN 0 580 28272 4 BS 4515-21999 Amendments issued since publication Amd. No.DateText affected Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee WEE/21, Pipework welding, to Subcommittee WEE/21/7, Field welding of pipelines, upon which the following bodies were represented Association of Consulting Engineers B G Transco British Institute of Non-Destructive Testing Engineering Equipment and Materials Users Association Health and Safety cutive International Marine Contractors Association Offshore Contractors Association Pipeline Industries Guild Welding Institute Welding Manufacturers Association BEAMA Ltd. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Mar 06 100154 GMT0000 2007, Uncontrolled Copy, c BSI 标准分享网 w w w .b z f x w .c o m 免费下载 BS 4515-21999  BSI 04-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Normative references1 3Definitions1 4Ination to be specified and items to be approved2 5Equipment3 6Welding processes4 7Welding consumables4 8Testing, qualification and approval of welding procedures4 9Testing, qualification and approval of welders16 10Production welding18 11Inspection and testing of welds20 12Acceptance and rectification of welds21 Annex A inative Welding procedure specification23 Annex B normative for determining volume fraction of ferrite in duplex stainless steel weldments by systematic point count24 Annex C normative for pitting corrosion testing of duplex stainless steel weldments by the use of ferric chloride solution25 Bibliography27 Figure 1 Location of repair excavations and destructive test specimens5 Figure 2 Location of test specimens10 Figure 3 Tensile test specimen11 Figure 4 Charpy V-notch impact test specimens for full penetration welds including full penetration repair welds13 Figure 5 Positioning of Charpy V-notch impact specimens for procedure approval of partial penetration repair welds15 Figure 6 Position of corrosion test specimen full penetration and internal repair welds16 Figure C.1 General layout of test specimen showing the test face uppermost26 Table 1 Welding procedure specification details and changes affecting approval7 Table 2 Number of specimens for procedure qualification tests on butt joints11 Table 3 Number of specimens for procedure qualification tests on repair welds14 Table 4 Diameter and thickness ranges for butt joints and branch connections17 Table 5 Acceptance criteria for welds22 Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Mar 06 100154 GMT0000 2007, Uncontrolled Copy, c BSI ii BSI 04-1999 BS 4515-21999 1At time of publication BS 45151996. Foreword This British Standard has been prepared by Subcommittee WEE/21/7. It complements BS 4515-11which applies only to carbon, carbon manganese and low alloy steels. In reflecting current industry practice, this British Standard places duties on, and allocates powers of approval to, the employer. In this it differs from BS EN 288-3 under which welding procedure approval may be independent of the employer. Consequently, the term qualification has been retained to describe the series of actions which demonstrate that the technical requirements of this British Standard have been met during the process of welding procedure, and welder, approval. It has been assumed, in the drafting of this British Standard, that the cution of its provisions will be entrusted to appropriately qualified and experienced personnel. Assessed capability. Users of this British Standard are advised to consider the desirability of quality system assessment and registration against the appropriate standard in the BS EN ISO 9000 series by an accredited third-party certification body. Annex A is inative and anns B and C are normative. A British Standard does not purport to include all necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 27 and a back cover. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Mar 06 100154 GMT0000 2007, Uncontrolled Copy, c BSI 标准分享网 w w w .b z f x w .c o m 免费下载  BSI 04-19991 4515-21999 1 Scope This British Standard specifies requirements for the welding of solution annealed duplex austeniticferritic stainless steel pipelines with specified minimum chromium contents in the range 21.0 to 26.0 , designed in accordance with BS 8010. It is applicable to transmission pipelines for gases, liquids or slurries, both on land and offshore, of outside diameter 21.0 mm and larger, having a thickness of 3.0 mm or greater. In addition to the definitive requirements it also requires that the items detailed in clause 4 be documented. For compliance with this standard, both the definitive requirements and the documented items have to be satisfied. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of this British Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS 499-1, Glossary for welding, brazing and thermal cutting. BS 638 all parts, Arc welding power sources, equipment and accessories. BS 709, s of destructive testing fusion welded joints and weld metal in steel. BS 5650, Specification for apparatus for gamma radiography. BS 8010, Code of practice for pipelines. PD 6493, Guidance on s for assessing the acceptability of flaws in fusion welded structures. BS EN 169, Specification for filters for personal eye- protection equipment used in welding and similar operations. BS EN 571-1, Non-destructive testing Penetrant testing General principles. BS EN 970, Non-destructive examination of fusion welds Visual examination. BS EN 14351997, Non-destructive examination of welds. Radiographic examination of welded joints. BS EN 10045-1, Charpy impact test on metallic materials. Test V- and U-notches. BS EN 60974-1, Arc welding equipment Part 1 Welding power sources. BS EN 60974-11, Arc welding equipment Part 11 Electrode holders. BS EN 60974-12, Arc welding equipment Part 12 Coupling devices for welding cables. BS EN ISO 6947, Welds Working positions Definitions of angles of slope and rotation. ASTM E3, Preparation of metallographic specimens. ASTM E562, Test for determining volume fraction by systematic manual point count. ASTM D1193, Reagent water Federal Test No. 7916. 3 Definitions For the purposes of this British Standard, the definitions given in ASTM E562 apply together with the following. 3.1 arc energy amount of heat generated in the welding arc per unit length of weld kJ/mm NOTEIt can be calculated using the following equation 3 1023 VI w where Vis the arc voltage in V; Iis the welding current in A; wis the welding speed in mm/s. 3.2 approval al agreement by the employer that a qualification or other proposal by the contractor in accordance with this British Standard is acceptable for the proposed application 3.3 contractor firm undertaking the contract and any subcontractors engaged in work covered by this standard 3.4 employer owner company or an engineering agency in charge of construction NOTEThe employer may act through a consultant, an inspector or other authorized representative. 3.5 external repair any repair from the external surface of the original weld 3.6 full penetration repair external repair which penetrates to the bore of the pipe 3.7 internal or back-weld repair any repair from the internal surface of the original weld 3.8 joint completed weld joining two sections of pipe, a section of pipe to a fitting, or two fittings Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Mar 06 100154 GMT0000 2007, Uncontrolled Copy, c BSI 2 BSI 04-1999 4515-21999 2 Ination for this item may not be able to be supplied until the appropriate stage of work is reached. 3.9 mechanized welding welding in which the welding parameters are controlled mechanically or electronically and may be manually varied during welding to maintain the required welding condition 3.10 partial penetration repair multi-run external repair NOTEA partial penetration repair excavation penetrating to within 6 mm of the bore of the pipe requires a full penetration repair weld qualification. 3.11 pipeline continuous line of pipes of any length without frequent branches used for transporting fluids NOTEA pipeline on land is a pipeline laid on or in land, including those sections laid under inland water courses. A subsea pipeline is a pipeline laid under maritime waters and estuaries and the shore below the high water mark. 3.12 positional welding welding wherein the pipe or assembly is held stationary 3.13 preliminary welding procedure specification pWPS tentative welding procedure specification WPS which is assumed to be adequate by the manufacturer, but which has not been qualified or approved NOTEWelding of test pieces needed for approval of a welding procedure specification has to be carried out on the basis of a preliminary welding procedure specification. 3.14 qualification series of actions necessary to demonstrate that a proposal meets the technical requirements of this British Standard 3.15 re-repair second or subsequent attempt at repairing a defect in the same location 3.16 roll welding of manipulation by rotating or rolling pipes or pipe assemblies so that all welding is carried out in or near the flat position 3.17 root run first run deposited in the root of a multi-run weld 3.18 semi-automatic welding welding in which some of the welding variables are automatically controlled, but manual guidance is necessary 3.19 sour service pipeline design conditions in which a risk of sulfide stress cracking exists NOTEThis is normally assessed using either NACE MR0175 [1] or EFC 17 [2]. 3.20 weld zone region containing the weld metal and heat-affected zone HAZ 3.21 welder operator who pers the welding 3.22 welding procedure specific course of action followed in welding, including a list of materials and, where necessary, tools to be used 3.23 welding procedure specification WPS document providing in detail the required variables for a specific application to ensure repeatability NOTEAn example of a WPS is given in annex A. 4 Ination to be specified and items to be approved 4.1 Ination to be specified by the employer The following ination to be supplied by the employer shall be fully documented. For compliance with the standard both the definitive requirements specified throughout the standard and the following documented items shall be satisfied a whether batch testing of electrodes and filler metals is required see 7.1; b whether different batches of electrodes and filler metals are to be individually identifiable and completely separated see 7.2; c whether an alternative location is specified for the excavation for the repair weld test see 8.1b; d whether strain ageing data and/or additional tests are required as the basis for welding procedure approval for pipe-reeling see 8.1e; e the type and number of re-tests required in the event of a procedure test failure see 8.1f2; f whether any additional s of non-destructive testing are required for butt joints see 8.5.1b; Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Mar 06 100154 GMT0000 2007, Uncontrolled Copy, c BSI 标准分享网 w w w .b z f x w .c o m 免费下载  BSI 04-19993 4515-21999 g the and acceptance levels for any hardness tests required see 8.5.2.4, 8.6.3 and 8.7.2.4; h whether the proportion of ferrite in the weld and HAZ microstructures is to be determined and the limits that apply see 8.5.2.5; i whether a temperature lower than the minimum design temperature is to be used as the impact test temperature see 8.5.2.6.1; j whether corrosion testing is required see 8.5.2.7 and 8.7.2.7; k whether a proposed change to a welding procedure or equipment will require re-qualification of the welders see 9.5i; l whether prevailing weather conditions are such that quality of the completed weld would be impaired see 10.92; m the s and frequency of visual inspection and non-destructive testing see 11.1; n whether completed welds are to be ground see 11.1; o whether NDT acceptance criteria are to be based on quality control or engineering critical assessment see 12.1; p whether a more stringent limit for root penetration is required see Table 5c. q test variables during pitting corrosion testing of duplex stainless steel see C.3 and C.4.2. 4.2 Items subject to approval by the employer The following items which are subject to approval by the employer shall be fully documented and, together with the definitive requirements specified throughout the standard, shall be satisfied before a claim of compliance with the standard can be made and verified a consumables to be used see 7.1; b the definition of a batch when batch testing of electrodes and filler materials is required see 7.1; c technique and equipment for attachment of anode bonding leads see 8.1a; d test weld production on pipes shorter than full length see 8.1b; e explanation for NDT failure if a test weld is to be destructively tested or re-welded to the same procedure see 8.1d; f weldin