DNVGL-RP-0034-2015-02

RECOMMENDEDPRACTICEDNVGLASTheelectronicpdfversionofthisdocumentfoundthrough©[e-mail]sbeenpreparedbasedonavailableknowledge,technologyand/orinformationatthetimeofissuanceofthisdocument.TheuseofthisdocumentbyothersthanDNVGLisattheuser'ssolerisk.DNVGLdoesnotacceptanyliabilityorresponsibilityforlossordamagesresultingfromanyuseofthisdocument.FOREWORDDNVGLrecommendedpracticescontainsoundengineeringpracticeandguidance.RecommendedpracticeDNVGL-RP-0034–EditionFebruary2015Page3DNVGLASChanges–currentCHANGES–CURRENTGeneralThisisanewdocument.Acknowledgements:ThisrecommendedpracticewasdevelopedbyaJointIndustryProject(JIP).TheworkwasperformedbyDNVGLanddiscussedinregularprojectmeetingsandworkshopswithindividualsfromtheparticipatingcompanies.Theyareherebyacknowledgedfortheirvaluableandconstructiveinput.Incaseconsensushasnotbeenachievable,DNVGLhassoughttoprovideacceptablecompromise.SponsorsoftheJIPincludedthefollowingorganisations:Furtherorganisationshaveparticipatedinthereviewprocess.DNVGLisgratefulforthevaluableco-operationsanddiscussionswithindividualsintheseorganisations.AkerSolutionsBrückCelsaChevronDetNorskeDril-QuipEllwoodGroupEniExxonMobilFMCFrisaGEJapanSteelWorksLundinOneSubseaPetrobrasRingmillScanaSubseaShellStatoilTotalRecommendedpracticeDNVGL-RP-0034–EditionFebruary2015Page4DNVGLASContentsCONTENTSCHANGES–CURRENT..................................................................................................3Sec.1General.........................................................................................................61.1Introduction...........................................................................................61.2Scopeandapplication............................................................................61.3Steelforgingclasses..............................................................................61.4Purchaseorderinformation....................................................................71.5Normativeandinformativereferences...................................................71.6Definitions..............................................................................................91.7Verbalforms...........................................................................................91.8Abbreviations.........................................................................................9Sec.2Qualityassuranceandqualitycontrol.........................................................112.1Qualitymanagementsystem................................................................112.2Manufacturingprocedurespecification.................................................112.3Inspectionandtestplan.......................................................................122.4Markingandtraceability.......................................................................122.5Certificationanddocumentation..........................................................12Sec.3Technicalprovisions....................................................................................143.1Manufacturingpractices.......................................................................143.1.1General......................................................................................143.1.2Melting,refining,andcasting.........................................................143.1.3Forging.......................................................................................143.1.4Heattreatment............................................................................153.2Chemicalcomposition...........................................................................153.2.1Heatanalysis...............................................................................153.2.2Productanalysis...........................................................................153.3Mechanicaltesting...............................................................................163.3.1Testlaboratories..........................................................................163.3.2Testmaterial...............................................................................163.3.3Testsampling..............................................................................163.3.4Testmethods..............................................................................173.3.5Mechanicalproperties...................................................................173.3.6Hardnesstesting..........................................................................173.3.7Re-testing...................................................................................183.3.8Testingaftersimulatedpostweldheattreatment............................183.4Metallographicexamination.................................................................183.5Non-de