1、BRITISH STANDARD BS EN 13927:2003 Non-destructive testing Visual testing Equipment The European Standard EN 13927:2003 has the status of a British Standard ICS 19.100 BS EN 13927:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 16 April 2
2、003 BSI 16 April 2003 ISBN 0 580 41589 9 National foreword This British Standard is the official English language version of EN 13927:2003. The UK participation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing, which has the responsibility to: A list of organiz
3、ations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspon
4、dence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of i
5、tself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments an
6、d promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since
7、publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13927 February2003 ICS19.100 Englishversion NondestructivetestingVisualtestingEquipment EssaisnondestructifsContrlevisuelEquipement ZerstrungsfreiePrfungSichtprufngGerte ThisEuropeanStandardwasapprovedbyCENon12Decembe
8、r2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreor
9、toanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesof
10、Austria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementC
11、entre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13927:2003EEN13927:2003(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Classification4 5 Verification4 5.1 General4 5
12、2 Verificationfrequency .5 6 Requirementsfortypicalequipmentusedforvisualtesting 5 6.1 Generalequipmentselection. .5 6.2 Lighting.6 6.3 Resolutiontargets .6 6.4 Graticule7 6.5 Replication7 6.6 Mirrorsandlenses .7 6.7 Endoscopes,fibrescopesandvideoscopes. 8 6.8 Photographicandvideoimagingcameras .8
13、6.9 Videomonitors .9 6.10 Imagerecordingequipment 9 6.11 Remotesystems. 9 AnnexA (informative) Outlineofequipmentforvisualtesting 11EN13927:2003(E) 3 Foreword Thisdocument(EN13297:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC138“Nondestructive testing”thesecretariatofwhichisheldbyAFNOR. ThisEuropea
14、nStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyAugust2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby August2003. AnnexAisinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationso
15、fthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN13927:2003(E) 4 1Scope ThisEuropeanSt
16、andarddescribesgeneralrequirementsforequipmentusedinvisualtesting. Theapplicationofequipmentisnecessaryinvisualtestingwhen: objects,whicharevisuallyoronaccountofenvironmentalfactorsnotaccessible,needtobemadeaccessible toviewing; thetestsensitivityisinsufficient; animagingrecordisrequired. ThisEurope
17、anStandardincludestheverificationofequipment. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentst
18、oorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN133010:2003, NondestructivetestingTerminologyPart10:Termsusedinvisualtesting EN13018:2001, Nond
19、estructivetestingVisualtestingGeneralprinciples ISO3057, NondestructivetestingMetallographicreplicatechniquesofsurfaceexamination ISO3058, NondestructivetestingAidstovisualinspectionSelectionoflowpowermagnifiers 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgivenin
20、EN133010:2003apply. 4Classification Equipmentwhichisusedinvisualtestingisclassifiedaccordingtothevisualtestingtechnique(directorremoteas describedinEN13018)andisoutlinedfurtherininformativeannexA. 5Verification 5.1General Verificationshallbecarriedouttoensurethattheequipmentortestarrangement(system)
21、willfulfilitstestfunction. Thismayincludecheckingthemechanical,opticalandelectroniccapabilityoftheequipment. Theverificationofthesystemandthetestsensitivityshallbebycomparisonwiththespecificationinthetest documentation.Whencomparing,testingparametersshallbeasfollows.EN13927:2003(E) 5 Systemsensitivi
22、tyorresolutionwillbeassessedbyusingaresolutiontargetordemonstrationtestpieceasper thetestdocumentation.(See6.3forselectionconsiderationsandtargettypes.) Equipmentandconditionsshallbearrangedaspertheactualtestwiththewholesystem. Attentionshallbegiventotheacceptancecriteriaandtheexpectedorientationofi
23、ndications.Forelectronic systemscareneedstobetakenwithorientationofthearrangementsuchthatindicationsarenotfalselyhiddenin theimagetransferfromopticaltoelectronicform.Forexampleanindicationcouldbehiddenorindistinguishable duetothemethodofimagesensoroperation. Verificationtestparametersshallberecorded
24、atthetimeoftest.Testparametersrequiredshallinclude: illumination; targettypeandsize; targettoopticorimagesensordistance; magnification. Theverificationtestparametersandresultsshallbeincludedintheposttestdocumentation. 5.2Verificationfrequency Verificationshallbemadeatthestartandendofeverytestsession
25、Itisalsorecommendedthattheverificationis checkedonceeveryfourhours. Thecheckcanbeasimplerformoftheverification. Verificationshallberepeatedwhentheoperatorsuspectsthatamalfunctionhasoccurred. Whentheverificationorcheckfailsaretestshallberequiredofallareascoveredsincetheprevioussatisfactory check. 6
26、Requirementsfortypicalequipmentusedforvisualtesting 6.1Generalequipmentselection Allequipmentshallbeselectedinconsiderationoftheconditionsonsiteandusagesothat: theyconformwithapplicablesafetyregulations; attachedpartsaresecure; mechanicalstrengthissuitableforthetask; temperaturerangeissuitableforthe
27、task. Whereequipmentistobeusedunderwaterorinacorrosiveenvironment,additionalattentionshallbepaidto: corrosion resistance; watertightnesstotheexpecteddepthofimmersion; avoidanceofanaccumulationofgasbubblesatthewatertoglassinterface; methodofhandlingunderwater.EN13927:2003(E) 6 Whereequipmentistobeuse
28、dinanionisingradiationenvironment,additionalattentionshallbepaidto: handlinginatimesavingmannerinconsiderationofexposuretoionisingradiation; decontamination; resistancetothelevelsofionisingradiationexpectedduringserviceofthechosenmaterials,especiallyglass andelectric/electronicparts; influenceofioni
29、singradiationonimagequalityandhowthiscanbekeptlowbycorrespondingmeasures(e.g. shielding). 6.2Lighting 6.2.1 Lightingequipmentselection Lightingequipmentshallbeselectedfortheirapplicabilitybyconsideringtherelevantpointsfromthefollowinglist: light intensity; lightfrequency(stroboscopiclight); spectral
30、rangeoflightoutput(colourtemperature); beam geometry; positionoflightfocus. 6.2.2 Lightingrequirements Thelightintensityshallbecheckedbycalibratedequipmentagainsttherequirementsofthetestdocumentation and5.3ofEN13018:2001. 6.3Resolutiontargets 6.3.1 Resolutiontargetselection Resolutiontargetsshallbes
31、electedfortheirapplicabilitybyconsideringtherelevantpointsfromthefollowinglist: sizeofresolutiontestimage; contrastratio; monochromeorcolour; cornerandcentreresolution; horizontalandverticallinearity; screenformat(e.g.4/3ratio); distance; magnification; illumination;EN13927:2003(E) 7 reflectivity/gl
32、are; staticordynamicviewing; directunaidedoraidedtest. 6.3.2 Typicalresolutiontargets Typicalresolutiontargetsaregiveninthefollowinglist: colourchart; linechart; grey scale; linearityindicator; targetslot. ExamplesofresolutiontargetsaregiveninannexA. 6.4Graticule 6.4.1Graticule selection Graticulesu
33、sedtoassistindicationanalysisshallbeselectedfortheirapplicabilitybyconsideringtherelevant pointsfromthefollowinglist: range of scale; accuracy; resolution; easeofaccesstomeasurementpointortointerfacewithimagesignal; mechanismofoutput; interchangeabilityofgraticules. 6.4.2Graticule requirements Thegr
34、aticuleshallbecalibratedtospecificstandards. 6.5Replication ReplicationtechniquesshallconformtoISO3057. 6.6Mirrorsandlenses 6.6.1Mirrors Mirrorsshallbeselectedfortheirapplicabilitybyconsideringtherelevantpointsfromthefollowinglist: flatnessorcurvature;EN13927:2003(E) 8 reflectivity; aperture. Lowpow
35、eredmagnifyingmirrorsshallbeselectedbyconsideringtherelevantpointsfromISO3058. 6.6.2Lenses Lensesshallbeselectedfortheirapplicabilitybyconsideringtherelevantpointsfromthefollowinglist: resolution; apertures; chromatic operation; geometric distortion; offaxisperformance. Lowpoweredmagnifyinglensessha
36、llbeselectedbyconsideringtherelevantpointsfromISO3058. 6.7Endoscopes,fibrescopesandvideoscopes Endoscopes,fibrescopesandvideoscopesshallbeselectedfortheirapplicabilitybyconsideringtherelevantpoints fromthefollowinglist: directionofview(e.g.direct0,side90,inclinedforward45orretroview110); focusing ra
37、nge; fieldofview; light source; manipulation capabilities; diameterandlength; rigidity. 6.8Photographicandvideoimagingcameras Photographicandvideoimagingcamerasshallbeselectedfortheirapplicabilitybyconsideringtherelevantpoints fromthefollowinglist: shutterspeed; flash synchronization speed; typeofim
38、agesensor; colourormonochrome; resolution; sensitivity;EN13927:2003(E) 9 lensfocusrange; fieldofview; mountingaidstoendoscopes,etc; auto focus; remotezoomandmacrofunction; white balance. Theabovepointscanbeappliedtothermalimagingcameras. 6.9Videomonitors Videomonitorsshallbeselectedfortheirapplicabi
39、litybyconsideringtherelevantpointsfromthefollowinglist: image size; colourormonochrome; resolution; contrast; rangeofangleofvision; refreshrate. 6.10 Imagerecordingequipment Imagerecordingequipmentshallbeselectedfortheirapplicabilitybyconsideringtherelevantpointsfromthe followinglist: resolution(ofr
40、ecordcomparedtoinspectionresolution); lengthofindividualrecord; storage format; storage life; preventionofoverwritingdata; recordingofdate,timeanduniqueidentification(e.g.pictureorelectronictextoverlay); data back up. 6.11Remotesystems Remotesystemsshallbeselectedfortheirapplicabilitybyconsideringth
41、erelevantpointsfromthefollowinglist: range of motion; versatility;EN13927:2003(E) 10 speedandcontrollevel; positioning accuracy; methodoftransmissionofimagedata.EN13927:2003(E) 11 Annex A (informative) Outlineofequipmentforvisualtesting A.1General TheequipmentlistedinA.2,A.3andA.4canbeusedfordirecta
42、nd/orremotevisualtesting.Theequipmentcanbe coupledwithremotedevices.Theselistsarenotexhaustive. A.2 Outlineofequipmenttypicallyusedfordirectvisualtesting Thefollowingcanbeused: lighting equipment; equipmentlinkedtoresolutioncapability(e.g.resolutiontarget,slot,opticaltestchart); graticule; replicati
43、on; mirror; lens; fibre optics; endoscopes; opticalattenuatorsandfilters(spectraland/orenergyadjustments). A.3 Outlineofequipmenttypicallyusedforremotevisualtesting Thefollowingcanbeused: fibreopticsorendoscopescoupledtooptoelectronicdevices; image sensor; photographic camera; video camera; solidstatecamera; tube camera; thermalimagecamera; video monitor;EN1392
