BS EN 462-4-1995 无损检验——射线图像质量 第4部分：图像质量灵敏度和行帧度的试验评

BRITISHSTANDARDBSEN462-4:1995Non-destructivetesting—Imagequalityofradiographs—Part4:ExperimentalevaluationofimagequalityvaluesandimagequalitytablesTheEuropeanStandardEN462-4:1994hasthestatusofaBritishStandardBSEN462-4:1995ThisBritishStandard,havingbeenpreparedunderthedirectionoftheEngineeringSectorBoard(E/-),waspublishedundertheauthorityoftheStandardsBoardandcomesintoeffecton15April1995©BSI12-1998ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferenceWEE/46Draftforcomment91/83302DCISBN0580288652CommitteesresponsibleforthisBritishStandardThepreparationofthisBritishStandardwasentrustedtoTechnicalCommitteeWEE/46,Non-destructivetesting,uponwhichthefollowingbodieswererepresented:AluminiumFederationAssociatedOfficesTechnicalCommitteeAssociationofConsultingEngineersBNF(FulmerMaterialsCentre)BritishAirwaysBritishChemicalEngineeringContractors’AssociationBritishCoalCorporationBritishGasplcBritishInstituteofNon-destructiveTestingBritishNon-ferrousMetalsFederationBritishNuclearFuelsplcBritishRailwaysBoardBritishSteelIndustryDepartmentofTradeandIndustry(NAMASExecutive)ElectricityAssociationEngineeringEquipmentandMaterialsUsers’AssociationHealthandSafetyExecutiveInstituteofPhysicsInstituteofQualityAssuranceLightMetalFounders’AssociationLloyd’sRegisterofShippingMinistryofDefenceNationalRadiologicalProtectionBoardPowerGenerationContractors’Association(PGCA(BEAMALtd.))RailwayIndustryAssociationofGreatBritainRoyalSocietyofChemistrySocietyofBritishAerospaceCompaniesLimitedSocietyofMotorManufacturersandTradersLimitedSteelCastingResearchandTradeAssociationWeldingInstituteThefollowingbodieswerealsorepresentedinthedraftingofthestandard,throughsubcommitteesandpanels:BritishPhotographicAssociationNationalNuclearCorporationLtd.AmendmentsissuedsincepublicationAmd.No.DateCommentsBSEN462-4:1995©BSI12-1998iContentsPageCommitteesresponsibleInsidefrontNationalforewordiiForeword2TextofEN462-433ListofreferencesInsidebackcoverBSEN462-4:1995ii©BSI12-1998NationalforewordThisBritishStandardhasbeenpreparedbyTechnicalCommitteeWEE/46andistheEnglishlanguageversionofEN462-4:1994Non-destructivetesting—Imagequalityofradiographs—Part4:Experimentalevaluationofimagequalityvaluesandimagequalitytables,publishedbytheEuropeanCommitteeforStandardization(CEN).EN462-4:1994wasproducedasaresultofinternationaldiscussioninwhichtheUKtookanactivepart.ABritishStandarddoesnotpurporttoincludeallthenecessaryprovisionsofacontract.UsersofBritishStandardsareresponsiblefortheircorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.Cross-referencesPublicationreferredtoCorrespondingBritishStandardBSEN462Non-destructivetesting—ImagequalityofradiographsEN462-1Part1:1994Imagequalityindicators(wiretype)—DeterminationofimagequalityvalueEN462-2Part2:1994Imagequalityindicators(step/holetype)—DeterminationofimagequalityvalueSummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesiandii,theENtitlepage,pages2to4,aninsidebackcoverandabackcover.Thisstandardhasbeenupdated(seecopyrightdate)andmayhavehadamendmentsincorporated.Thiswillbeindicatedintheamendmenttableontheinsidefrontcover.EUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN462-4November1994ICS19.100Descriptors:Non-destructivetests,industrialradiography,photographicimages,quality,imagequalityindicatorsEnglishversionNon-destructivetesting—Imagequalityofradiographs—Part4:ExperimentalevaluationofimagequalityvaluesandimagequalitytablesEssaisnondestructifs—Qualitéd’imagedesradiogrammes—Partie4:Evaluationexpérimentaledesindicesdequalitéd’imageetdestablesdequalitéd’imageZerstörungsfreiePrüfung—BildgütevonDurchstrahlungsaufnahme—Teil4:ExperimentelleErmittlungvonBildgütezahlenundBildgütetabellenThisEuropeanStandardwasapprovedbyCENon1994-11-10.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.CENEuropeanCommitteeforStandardizationComitéEuropéendeNormalisationEuropäischesKomiteefürNormungCentralSecretariat:ruedeStassart36,B-1050Brussels©1994CopyrightreservedtoCENmembersRef.No.EN462-4:1994EEN462-4:1994©BSI12-19982ForewordThisEuropeanStandardhasbeenproducedbyCEN/TC138Non-destructivetesting,thesecretariatofwhichisheldbytheFrenchAssociationforStandardization(AFNOR).EN462-4isaPartofaseriesofEuropeanStandardswiththesamenumber;theotherPartsarethefollowing:EN462-1,Non-destructivetesting—Imagequ