BRITISHSTANDARDBSEN25580:1992ISO5580:1985SpecificationforMinimumrequirementsforindustrialradiographicilluminatorsfornon-destructivetestingThisEuropeanStandardEN25580:1992hasthestatusofaBritishStandardBSEN25580:1992ThisBritishStandard,havingbeenpreparedunderthedirectionoftheGeneralMechanicalEngineeringStandardsPolicyCommittee,waspublishedundertheauthorityoftheStandardsBoardandcomesintoeffecton15June1992©BSI02-1999ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferenceGME/23Draftforapproval90/80071DCISBN0580204715CooperatingorganizationsTheEuropeanCommitteeforStandardization(CEN),underwhosesupervisionthisEuropeanStandardwasprepared,comprisesthenationalstandardsorganizationsofthefollowingcountries.AustriaOesterreichischesNormungsinstitutBelgiumInstitutbelgedenormalisationDenmarkDanskStandardiseringsraadFinlandSuomenStandardisoimisliito,r.y.FranceAssociationfrançaisedenormalisationGermanyDeutschesInstitutfürNormunge.V.GreeceHellenicOrganizationforStandardizationIcelandTechnologicalInstituteofIcelandIrelandNationalStandardsAuthorityofIrelandItalyEnteNazionaleItalianodiUnificazioneLuxembourgInspectionduTravailetdesMinesNetherlandsNederlandsNormalisatie-instituutNorwayNorgesStandardiseringsforbundPortugalInstitutoPortuguèsdaQualidadeSpainAsociaciónEspañoladeNormalizaciónyCertificaciónSwedenStandardiseringskommissioneniSverigeSwitzerlandAssociationsuissedenormalisationUnitedKingdomBritishStandardsInstitutionAmendmentsissuedsincepublicationAmd.No.DateCommentsBSEN25580:1992©BSI02-1999iContentsPageCooperatingorganizationsInsidefrontcoverNationalforewordiiForewordofEN2558021Scopeandfieldofapplication32Characteristicsofradiographicilluminators33Determinationofcertaincharacteristics44Marking45Recommendationsforuse4Figure—Lightluminancemeasurement5NationalappendixNA(informative)InsidebackcoverBSEN25580:1992ii©BSI02-1999NationalforewordThisBritishStandardhasbeenpreparedunderthedirectionoftheGeneralMechanicalEngineeringStandardsPolicyCommitteeandistheEnglishlanguageversionofEN25580:1992“Non-destructivetesting—Industrialradiographicilluminators—Minimumrequirements”publishedbytheEuropeanCommitteeforStandardization(CEN).EN25580:1992isidenticalwithISO5580:1985publishedbytheInternationalOrganizationforStandardization(ISO).NationalappendixNAgivestheconstitutionofthecommitteesresponsibleforUKparticipationinthepreparationofthisstandard.ABritishStandarddoesnotpurporttoincludeallthenecessaryprovisionsofacontract.UsersofBritishStandardsareresponsiblefortheircorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesiandii,theENtitlepage,pages2to6,aninsidebackcoverandabackcover.Thisstandardhasbeenupdated(seecopyrightdate)andmayhavehadamendmentsincorporated.Thiswillbeindicatedintheamendmenttableontheinsidefrontcover.EUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN25580April1992UDC620.179.152.05:620.186Descriptors:Non-destructivetests,industrialradiography,radiographicilluminators,equipmentspecifications,screens:Display,luminance,divergence,lighting,opticalmeasurements,markingEnglishversionNon-destructivetestingIndustrialradiographicilluminatorsMinimumrequirements(ISO5580:1985)Essaisnondestructifs—Négatoscopesutilisésenradiographieindustrielle—Exigencesminimales(ISO5580:1985)ZerstörungsfreiePrüfung—BetrachtungsgerätefürdieindustrielleRadiographie—MinimaleAnforderungen(ISO5580:1985)ThisEuropeanStandardwasapprovedbyCENon1992-03-27.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©CEN1992CopyrightreservedtoallCENmembersRef.No.EN25580:1992EEN25580:1992©BSI02-19992ForewordIn1990,ISO5580:1985wassubmittedtotheCENPrimaryQuestionnaireprocedure.Followingthepositiveresultofthisprocedure,theCENTechnicalBoard,agreedtosubmitISO5580:1985,withoutmodifications,toFormalVote.TheresultoftheFormalVotewaspositive.NationalstandardsidenticaltothisEuropeanStandardshallbepublishedatthelatestby92-10-31andconflictingnationalstandardsshallbewithdrawnatthelatestby92-10-31.InaccordancewiththeCEN/CENELECCommonRules,thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Denmark,Finland,France,Germ