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1、BRITISHSTANDARDBSEN12952-5:2001Water-tubeboilersandauxiliaryinstallations—Part5:WorkmanshipandconstructionofpressurepartsoftheboilerTheEuropeanStandardEN12952-5:2001hasthestatusofaBritishStandardICS27.040LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,
2、ThuAug2310:11:44GMT+00:002007,UncontrolledCopy,(c)BSINOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWBSEN12952-5:2001NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN12952-2:2001.ItpartiallysupersedesBS1113:1999whichwillbewithdrawnw
3、henParts1,2,3,5,6,7,10,and11ofBSEN12952arepublished.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePVE/2,Water-tubeboilers,whichhastheresponsibilityto:—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquirie
4、sontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.AdditionalinformationTheUnitedkingdomv
5、otedagainsttheacceptanceofthisEuropeanStandardattheFormulaVotestage.TheprincipalUKobjectionswereasfollows:a)ThereisnoreferenceintheENforewordtoCR12952-17,Water-tubeboilersandauxiliaryinstallations—Part17:Guidelinesfortheinvolvementofaninspectionbodyindependentofthemanu
6、facturer.b)CEN/TC269passedaresolutionthatParts1,2,3,5,6and7bepublishedasapackagenecessaryforthedesign,constructionandsafetyofwater-tubeboilersbutnomentionofthisisgivenintheENforeword.c)6.3.5givesarequirementthatpressurepartsofaboilershallbemarkedwiththemanufacturer’sbr
7、andmarkandpropertyclasssymbol,orthesteelgradecodenumberinaccordancewithENISO4759-1.However,ENISO4759-1onlyreferstotolerancesforfastenersandthereisnomentionofmarking.d)Figure9.4showsvarioustypicalfeaturesrelatingtotubeexpansionbutincorrectlylabelsitem6inthekeyasaradialh
8、ole.e)10.4.2describesamethodofpost-weldheattreatment.Thesecondparagraphsgivesarequirementthatwheretheattachingbuttwel
