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【英文标准名称】:StandardGuideforMakingQualityNondestructiveAssayMeasurements
【原文标准名称】:无损检测的标准测量指南
【标准号】:ASTMC1592/C1592M-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C26.10
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:Neutronmoderators;Nondestructiveevaluation(NDE);Passiveneutroncoincidencecounting;Secularequillibrium;Totalmeasurementuncertainty(TMU)
【摘要】:NDAmeasurementpracticesaimedatachievingqualityresultsaredescribedinthisguide.Theapplicationofthematerialprovidedinthisguideshouldbedeterminedonacasebycasebasis.Notallelementsarerequiredforallapplications.NondestructiveassaymeasurementsaretypicallyperformedwhentheitemsmeasuredorgoalsofthemeasurementprogramfavorNDAoverdestructiveanalysis.NDAistypicallyfavoredwhencollectingarepresentativesampleoftheitemisdifficultorimpractical(forexample,scrapandwasteitems),personnelexposurewouldbesignificant,spreadofcontaminationfromsamplingwouldoccur,generationofsecondarywastemustbeminimized,theweightand/ortareweightoftheitemcannoteasilybedetermined(forexample,inplaceprocessequipment),rapidturnaroundofthemeasurementresultsisneeded,ortheNDAmeasurementissignificantlylessexpensivethantheequivalentdestructiveanalysis.Theprinciplesprovidedinthisguideshouldbeusedtodeterminewhichtypeofmeasurementisbestsuitedtothemeasurementapplication.Thisdeterminationinvolvesconsiderationofthecharacteristicsoftheitemstobemeasured,aswellasthegoalsofthemeasurementprogram.ThisguideappliestothesuiteofNDAinstrumentsandmeasurementmethods,manyofwhicharedescribedindetailinRefs(1)and(2).Apartiallistingofmeasurementmethodsandapplicableusereferencesisprovidedin5.6.1.ItisincumbentupontheusertoseekadditionalguidancewithinASTMmethod-specificstandards,asthisguidedoesnottakeprecedence.Additionalinformationonspecificmethodsisbestfoundintechnicalmeetingtransactions,journals,commercialapplicationnotes,andNRC/DOEpublications.Thisguidemaybeappliedtomanysituationsspanningtherangeofnuclearmaterialsfromproductthroughwaste.Typicalapplicationsinclude:themeasurementandcharacterizationoftransuranicwastes,low-levelwastes,andmixedwastes;thedeterminationofradioactivitybelowsomeregulatorythreshold,estimatedfornon-detectedradionuclides;themeasurementofsafeguardednuclearmaterials;shipperreceiverconfirmation;confirmationofnuclearmaterialinventory;supportofnuclearcriticalitysafetyevaluations;measurementofholdupofspecialnuclearmaterialinprocesssystems;supportofdecontaminationanddecommissioningactivities;andin-situanalysesoffacilities,glove-boxes,hotcells,andtheenvironmentpriortoandfollowingdemolition.Whenappliedtomeasurementofwaste,thisguideshouldbeusedinconjunctionwithawastemanagementplanthatsegregatesthecontentsofassayitemsintomaterialcategoriesaccordingtosomeorallofthefollowingcriteria:bulkdensityofthewaste,chemicalformsoftheradioactiveconstituentsandmatrix,(x03B1;,n)neutronintensity,hydrogen(moderator)andabsorbercontent,thicknessoffissilemass(es),andtheassayitemcontainersizeandcomposition.Eachmatrixmayrequireadifferentsetofcalibrationstandardsandmayhavedifferentmasscalibrationlimits.Theeffectonthequalityoftheassay(thatis,maximizingprecisionandminimizingbias)cansignificantlydependonthedegreeofadherencetothiswastemanagementplan.Thisguideaddresseselementsofqualitymeasurementpracticesuchas;nuclearmeasurementinstrumentationanditscare;commonhazards;facilityreadinessandrequirementstosupporttheNDAequipment;projectscoping,requirementsandobjectives;assemblyanddeploymentoftheinstrument;calibrationandtest;computationalmodelingtoaugmentphysicaltesting;measurementvalidation;preventivemaintenance;andthemeasurementcontrolprogram.1.1ThisguideisacompendiumofQualityMeasurementPracticesforperformingm......
【中国标准分类号】:A20
【国际标准分类号】:27_120_30
【页数】:11P.;A4
【正文语种】:英语