【BS英國(guó)標(biāo)準(zhǔn)】BSEN288-9-1999金屬材料焊接工藝規(guī)范和認(rèn)可第9部分：陸地和近海供料管道的現(xiàn)場(chǎng)焊接對(duì)接接縫的焊接工藝試驗(yàn).doc

國(guó)內(nèi)外標(biāo)準(zhǔn)大全豆丁網(wǎng)國(guó)內(nèi)外標(biāo)準(zhǔn)下載地址 /kmust1british standardspecification andapproval of welding procedures for metallic materials part 9: welding procedure test for pipeline welding on land and offshore site butt welding of transmission pipelinesthe european standard en 288-9:1999 has the status of abritish standardics 25.160.10| bs en288-9:1999|no copying without bsi permission except as permitted by copyright lawbs en 288-9:1999national forewordthis british standard is the english language version of en 288-9:1999.the uk participation in its preparation was entrusted by technical committee wee/21, pipework welding, to subcommittee wee/21/7, field welding, which has the responsibility to: aid enquirers to understand the text; present to the responsible european committee any enquiries on the interpretation, or proposals for change, and keep the uk interests informed; monitor related international and european developments and promulgate them in the uk.a list of organizations represented on this subcommittee can be obtained on request to its secretary.cross-referencesthe british standards which implement international or european publications referred to in this document may be found in the bsi standards catalogue under the section entitled international standards correspondence index, or by using thefind facility of the bsi standards electronic catalogue.a british standard does not purport to include all the 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 pagesthis document comprises a front cover, an inside front cover, the en title page, pages 2 to 19 and a back cover.the bsi copyright notice displayed throughout this document indicates when the document was last issued.amd. no.datecommentsthis british standard, having been prepared under the direction of the engineeringsector committee, was published under the authority of the standards committee and comes into effect on 15 august 1999bsi 08-1999isbn 0 580 32580 6amendments issued since publicationeuropean standarden 288-9norme europe enneeuropa ische normmarch 1999ics 25.160.10english versionspecification and approval of welding procedures for metallic materials part 9: welding procedure test for pipeline welding on land and offshore site butt welding of transmission pipelinesdescriptif et qualification dun mode ope ratoire de soudage pour les mate riaux me talliques partie 9: epreuve de qualification dun modeope ratoire de soudage pour le soudage bout a bout de canalisations de transport sur site, sur terre eten meranforderung und anerkennung von schweiverfahren fu r metallische werkstoffe teil 9: schweiverfahrenspru fung fu r baustellengeschweite stumpfna hte von versorgungsrohrleitungen an land und offshorethis european standard was approved by cen on 3 march 1999.cen members are bound to comply with the cen/cenelec internal regulations which stipulate the conditions for giving this european standard the status of a national standard without any alteration. up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the central secretariat or to any cen member.this european standard exists in three official versions (english, french, german). a version in any other language made by translation under the responsibility of a cen member into its own language and notified to the central secretariat has the same status as the official versions.cen members are the national standards bodies of austria, belgium, czech republic, denmark, finland, france, germany, greece, iceland, ireland, italy, luxembourg, netherlands, norway, portugal, spain, sweden, switzerland and united kingdom.ceneuropean committee for standardization comite europe en de normalisation europa isches komitee fu r normungcentral secretariat: rue de stassart 36, b-1050 brussels1999 cen all rights of exploitation in any form and by any means reserved worldwide for cen nationalmembers.ref. no. en 288-9:1999 epage 9en 288-9:1999bsi 08-1999forewordthis european standard has been prepared bytechnical committee cen/tc 121, welding, thecontentspagesecretariat of which is held by ds.this european standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest byseptember 1999, and conflicting national standards shall be withdrawn at the latest by september 1999.according to the cen/cenelec internal regulations, the national standards organizations of the following countries are bound to implement this european standard: austria, belgium, czech republic, denmark, finland, france, germany, greece, iceland, ireland, italy, luxembourg, netherlands, norway, portugal, spain, sweden, switzerland and the united kingdom.foreword 2introduction 31scope 32normative references 33definitions 43.1repair 43.2full penetration repair 43.3internal repair 43.4make 44preliminary welding procedurespecification (pwps) 45welding procedure test 46test piece 46.1general 46.2shape and dimensions of test pieces 46.3welding of test pieces 47examination and testing 47.1extent of testing 47.2location and cutting of test specimens 47.3non-destructive examination 67.4destructive tests 67.5re-testing 118range of approval 128.1general 128.2related to the manufacturer 128.3related to the material 128.4common to all welding procedures 138.5specific to processes 148.6period of validity 149wedling procedure approval record(wpar) 14annex a (normative) repairs 15annex b (informative) a-deviations 16annex c (informative) welding procedureapproval record form 17introductionall new welding procedure approvals are in accordance with this standard from the date of its issue.however, this standard does not invalidate previous welding procedure approvals made to former national standards or specification, providing the intent of the technical requirements is satisfied and the previous procedure approvals are relevant to the application and production work on which they are employed.also, where additional tests are carried out to make the welding procedure approval technically equivalent, the additional tests are made on a test piece which should be made in accordance with this standard. consideration of previous procedure approvals toformer national standards or specifications should be made at the time of the enquiry or contract stage and agreed between the contracting parties.1 scopethis standard specifies how a welding procedure specification is approved by welding procedure tests for on land and offshore site butt welding of transmission pipelines under normal atmospheric conditions.tests are carried out in accordance with this standard unless additional tests (e.g. ctod tests and all weld metal tensile tests) are specified by the relevant application standard or contract when these apply. this standard defines the conditions for the executionof welding procedure approval tests and the limits of validity of an approved welding procedure for all practical welding operations within the range of variables listed in clause 8.it applies to the arc welding of steels of groups 1, 2 and 3 according to cr 12187. the principles of this standard can be applied to other fusion welding processes subject to agreement between the contracting parties.the requirements for welding procedure specification and qualification for hyperbaric and wet welding are not covered by this supplementary standard.arc welding is covered by the following processes in accordance with en 24063:111metal-arc welding with covered electrode;114flux-cored wire metal-arc welding without gas shield;121submerged arc welding with wire electrode;131metal-arc inert gas welding, mig-welding;135metal-arc active gas welding, mag-welding;136flux-cored wire metal-arc welding with active gas shield;141tungsten inert gas arc welding, tig-welding.other fusion welding processes by agreement e.g. metal cored wire arc welding.2 normative referencesthis european standard incorporates by dated or undated reference, provisions from other publications. these normative references are cited at the appropriate places in the text and the publications are listed hereafter. for dated references, subsequent amendments to or revisions of any of these publications apply to this european standard onlywhen incorporated in it by amendment or revision. for undated references the latest edition of the publication referred to applies.en 288-1, specification and approval of welding procedures for metallic materials part 1: general rules for fusion welding.en 288-2, specification and approval of welding procedures for metallic materials part 2: welding procedure specification for arc welding.en 439, welding consumables shielding gases for arc welding and cutting.en 760, welding consumables fluxes for submerged arc welding classification.en 875, destructive tests on welds in metallic materials impact tests test specimen location, notch orientation and examination.en 895, destructive tests on welds in metallic material tranverse tensile test.en 970, non-destructive examination of welds visual examination.en 1043-1, destructive test on weld in metallic materials hardness testing part 1: hardness test on arc welded joints.en 1290, non-destructive examination of welds magnetic particle examination of welds.en 1321, destructive test on welds in metallic materials macroscopic and microscopic examination of welds.en 1435, non-destructive examination of welds radiographic examination of welded joints.en 1714, non-destructive examination of welds ultrasonic examination of welded joints.en iso 6947, welds working positions definitions of angles of slope and rotation. (iso 6947:1993)en 10045-1, metallic materials charpy impact test part 1: test method.en 24063, welding, brazing, soldering and braze welding of metals nomenclature of processesand reference numbers for symbolic representation on drawings.(iso 4063:1990)en iso 6520-1:1998, welding and applied processes classification of geometric imperfections in metallic materials part 1: fusion welding.(iso 6520-1:1998)cr 12187, welding guidelines for a grouping system of materials for welding purposes.3 definitionsfor the purposes of this standard, the definitions listed below and in en 288-1 apply.3.1 repairany operation which involves welding to rectify the weld, outside the normal welding cycle3.2full penetration repairwelded repair through the whole thickness of the qualification joint3.3internal repairwelded repair carried out from the inside surface or the root side of a weld, after excavation and repreparation, using either a single or a multi-pass weld deposition sequence3.4 makespecific trade or brand name of the consumable, but not its designation4 preliminary welding procedure specification (pwps)the preliminary welding procedure specification shall be prepared in accordance with en 288-2. it shall specify the range for all relevant parameters including the following additional items: steel grade and supply conditions(n, tm, qt steels); number and location of welders; time lapse between start of root pass and start of hot pass; partially completed joint: number of runs before the joint is permitted to cool to ambient temperature; type of line up clamp; time of clamp removal; number of runs completed before lowering off or barge move up; preheating method; method to control cooling.5 welding procedure testthe making and testing of test pieces representing the type of welding used in production shall be carried out in accordance with clauses 6 and 7 of this standard.when a welding procedure is to be qualified and approved for pipe-reeling, the proposed welding procedures shall include relevant previously documented strain ageing data and/or any additional tests specified.note these tests can include representative strain cycles and accelerated ageing typically for 1 h at 1008 c.where data regarding pipe material performance/weldability exist, these data shall be considered when selecting suitable welding parameters and conditions for incorporating into the pwps. where such data do not exist it can be necessary to carry out preliminary welding trials to establish these data.the welder who undertakes the welding procedure test satisfactorily in accordance with this standard can be approved, by agreement between the contracting parties, for welding on site within the ranges coveredby the approved welding procedure specification.6 test piece6.1 generalthe welded assembly to which the welding procedure will relate in production shall be represented bymaking a standardized test piece or pieces, as specified in shape and dimensions of test piecestest welds shall be made between whole pipe lengths (if agreed between the contracting parties the length could be reduced to a minimum of one diameter) under simulated site conditions (this may include the application of installation strains). welding shall follow the pwps, with removal of line-up clamps, loweringoff, partial completion and recommencement where applicable.6.3 welding of test piecespreparation and welding of test pieces shall be carried out in accordance with the pwps, and under the general conditions of production welding which they shall represent. welding positions and limitations for the angle of slope and rotation of test piece shall be in accordance with en iso 6947 (see also 8.4.2).if tack welds are to be fused into the final joint they shall be included in the test piece.welding and testing of the test pieces shall be witnessed by an examiner or examining body.7 examination and testing7.1 extent of testingthe testing includes both non-destructive examination (nde) and destructive testing which shall be carried out in accordance with the requirements of table 1.when charpy impact tests are specified for welds exceeding 20 mm thick, they are required at two different thickness locations (see 7.4.3).repairs outside essential variables need full approval in accordance with annex a.7.2 location and cutting of test specimensthe location of test specimens shall be in accordance with figures 1 and 2.test specimens shall be taken after non-destructive examination (nde) has shown satisfactory results. it is permitted to take the test specimens from locations avoiding areas showing acceptable imperfections.table 1 examination and testing of the test piecestest piecetype of testextent of testingnotebutt-weldvisual examination (en 970) radiographic examination (en 1435) or ultrasonic examination (en 1714) surface crack detectiontransverse tensile test (en 895) impact test (en 875)hardness test (en 1043-1) macro-examination (en 1321)100%100 %100 %2 test specimens2 or 4 sets required1 test specimen123note 1 magnetic particle examination according to en 1290.note 2 1 set in the weld metal and 1 set in the haz at each location. see also 7.4.3.note 3 not required for parent metals in ferritic steels with rm # 430 n/mm2 (re # 275 n/mm2).figure 1 location of test specimens for a butt-weld in pipe upwards weldingfigure 2 location of test specimens for a butt-weld in pipe downwards welding7.3 non-destructive examination7.3.1 methodafter any required post-weld heat treatment and prior to the cutting of test specimens, all test pieces shall be examined visually and non-destructively in accordance with 7.1.for non-post-weld heat treated test pieces, account should be taken of the materials susceptibility to hydrogen induced cracking and consequently the nde should be delayed. the nde delay shall be 24 h, unless agreed by the contracting parties or by the relevant application standard.7.3.2 acceptance levelsa welding procedure is approved if the imperfectionsin the test piece are within the specified limits given intable 2.7.4 destructive testsfor welds carried out by cellulosic coated electrodes, a degassing heat treatment of 250 8c of up to 16 h can be carried out, if necessary according to special requirements.7.4.1 transverse tensile testingtests specimen