Designation:E1390−12(Reapproved2016)StandardSpecificationforIlluminatorsUsedforViewingIndustrialRadiographs1ThisstandardisissuedunderthefixeddesignationE1390;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thefunctionoftheilluminatoristoprovidesufficientilluminationandviewingcapabilitiesforthepurposeofiden-tificationandinterpretationofradiographicimages.Thisspeci-ficationprovidestherecommendedminimumrequirementsforIndustrialRadiographicIlluminatorsusedforviewingindus-trialradiographicfilmsusingtransmittedlightsources.1.2Theilluminatorhastoensurethesamesafetyforpersonnel,orusersofanyelectricapparatus,asspecifiedbyelectricalstandardsapplicableinthecountryinwhichtheilluminatorisused.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.4ValuesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationonly.2.ReferencedDocuments2.1ASTMStandards:2E1316TerminologyforNondestructiveExaminations3.Terminology3.1Definitions:3.1.1diffusingscreen—thescreenthatscattersthelightsuchthatthelightappearsthesamebrightnessfromanyviewingangle.3.1.2viewingscreen—theportthroughwhichthelightisprojected.3.2Foradditionaldefinitionsoftermsusedinthisspecification,seeTerminologyE1316.4.OrderingInformation4.1Thisspecificationisintendedtobeusedbythemanu-facturersandpurchasersofradiographicilluminators.Requirements,ifimposedonmanufacturers,shouldbeestab-lishedbycontractualagreementorappropriatepurchasedocu-ment.5.MaterialsandManufacture5.1General—Theilluminatorshallconsistofahousingwithoneormoreofthesidescontainingaviewingscreenilluminatedfromtheinsideoft...
