BS EN ISO 16827 2025.docx

BSENISO16827:2025Non-destructivetestingUltrasonictesting一Characterizationandsizingofdiscontinuitiesbsi.NationalforewordThisBritishStandardistheUKimplementationofENISO16827:2025.ItisidenticaltoISO16827:2025.ItsupersedesBSENISO16827:2014,whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeWEE/46/3,UltrasonicTesting.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitscommitteemanager.ContractualandlegalconsiderationsThispublicationhasbeenpreparedingoodfaith,howevernorepresentation,warranty,assuranceorundertaking(expressorimplied)isorwillbemade,andnoresponsibilityorliabilityisorwillbeacceptedbyBSIinrelationtotheadequacy,accuracy,completenessorreasonablenessofthispublication.Allandanysuchresponsibilityandliabilityisexpresslydisclaimedtothefullextentpermittedbythelaw.Thispublicationisprovidedasis,andistobeusedattherecipientsownrisk.Therecipientisadvisedtoconsiderseekingprofessionalguidancewithrespecttoitsuseofthispublication.Thispublicationisnotintendedtoconstituteacontract.Usersareresponsibleforitscorrectapplication.©TheBritishStandardsInstitution2025PublishedbyBSIStandardsLimited2025ISBN9780539270280ICS19.100CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30June2025.Amendments/corrigendaissuedsincepublicationDateTextaffectedEUROPEANSTANDARDNORMEEUROPEENNEEuropaischenormBSENISO16827:2025ENISO16827June2025Essaisnondestructifs-Controleparultrasons-Caracterisationetdimensionnementdesdiscontinuites(ISO16827:2025)ZerstorungsfreiePriifung-Ultraschallprufung-BeschreibungundGroEenbestimmungvonInhomogenitaten(ISO16827:2025)ICS19.100SupersedesENISO16827:2014EnglishVersionNon-destructivetesting-Ultrasonictesting-CharacterizationandsizingofdiscontinuitiesISO16827:2025ThisEuropeanStandardwasapprovedbyCENon7June2025.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCEN-CENELECManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCEN-CENELECManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandUnitedKingdom.富EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITEEUROPEENDENORMALISATIONEuropaischeskomiteefurnormungCEN-CENELECManagementCentre:RuedelaScience23,B-1040Brussels©2025CENAllrightsofexploitationinanyformandbyanymeansreservedRef.No.ENISO16827:2025EworldwideforCENnationalMembers.EuropeanforewordThisdocument(ENISO16827:2025)hasbeenpreparedbyTechnicalCommitteeISO/TC135"Nondestructivetesting"incollaborationwithTechnicalCommitteeCEN/TC13811Non-destructivetesting”thesecretariatofwhichisheldbyAFNOR.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbyDecember2025,andconflictingnationalstandardsshallbewithdrawnatthelatestbyDecember2025.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CENshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ThisdocumentsupersedesENISO16827:2014.Anyfeedbackandquestionsonthisdocumentshouldbedirectedtotheusers'nationalstandardsbody/nationalcommittee.AcompletelistingofthesebodiescanbefoundontheCENwebsite.AccordingtotheCEN-CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Bulgaria,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandtheUnitedKingdom.EndorsementnoticeThetextofISO16827:2025hasbeenapprovedbyCENasENISO16827:2025withoutanymodification.ContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitions14 Principlesofcharacterizationofdiscontinuities14.1 General14.2 Requirementsforsurfacecondition25 Pulse-echotechniques25.1 General25.2 Locationofdiscontinuity25.3 Orientationofdiscontinuity35.4 Assessmentofmultipleindications35.5 Shapeofdiscontinuity45.5.1 Simpleclassification45.5.2 Detailedclassification45.6 Maximumechoh