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【英文标准名称】:StandardPracticeforUseofCelluloseAcetateDosimetrySystems
【原文标准名称】:醋酸纤维素剂量测量系统应用的标准指南
【标准号】:ASTMISO/ASTM51650-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:E10.01
【标准类型】:(ISO/ASTM)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorbeddose;CDA;celluloseacetatedosimeter;cellulosediacetatedosimeter;cellulosetriacetatedosimeter;CTA;dosedistribution;dosemapping;dosimeter;dosimetry;electronbeams;filmdosimeter;gamma-rays;routinedosimeter;ICS
【摘要】:4.1Thecellulosetriacetate(CTA)dosimetrysystemprovidesameansformeasuringabsorbeddoseinmaterials(2-15).Thedosimeterisafilmcontainingcellulosetriacetateandplasticizer.Thedosimetryisbasedonchemicalreactionsinthefilmresultinginchangesintheopticalabsorptionpropertiesinnearultravioletregion.Theabsorbanceismeasuredataspecificwavelengthusingaspectrophotometerorequivalentphotometricinstruments.4.2Absorbeddoseisevaluatedbyuseofacalibrationcurveorresponsefunctiontraceabletonationallyorinternationallyrecognizedstandards.4.3Absorbeddoseisusuallyspecifiedintermsofabsorbeddosetowater.AbsorbeddosetoothermaterialsmaybeevaluatedbyapplyingtheconversionfactorsdiscussedinISO/ASTMGuide51261.NOTE2-Foracomprehensivediscussionofvariousdosimetrymethodsapplicabletotheradiationtypesandenergiesdiscussedinthispractice,seeICRUReports14,17,34,35,and37.4.4Thisdosimetrysystemmaybeusedinindustrialradiationprocessingofvariousproducts,forexampleradiationeffecttests,polymermodifications,andsterilizationofmedicaldevices.4.5Aone-dimensionalabsorbed-dosemappingonorwithinaproductmaybeobtainedbyirradiatingadosimeterstripofappropriatelength.4.6Theabsorbed-doserangeindicatedin1.2.1maybeachievedbyusingtriphenylphosphate(TPP)asthesoleplasticizerinthedosimeter.4.7Theeffectonthedosimeterresponseduetochangesintheirradiationconditions,suchasabsorbed-doserate,temperature,humidity,andatmosphereshouldbeconsideredwhenthesearedifferentfromthecalibrationconditions.4.7.1Thedosimeterhasdifferentresponsestoelectronbeamsatrelativelyhighdoseratesthantogammaradiationatrelativelylowdoserates(seeFig.1).Calibrationshouldbecarriedoutseparatelyforeachtypeofradiation.4.7.2Thedosimeterresponseincreaseslinearlywithtemperaturefrom-10to60癈at7kGy/h,andfrom-10to40癈at1.2kGy/h(7),andwithrelativehumidity(upto80%)duringirradiationwhenirradiatedatlowerdoserates(100kGy/h).Alltheseeffectsneedtobeconsideredbeforethedosimetercanbeusedroutinelyforprocessing(4,7,12,15).Forhigh-dose-ratedosimetry(forexample,electronbeams)theinfluenceofhumidityondosimeterresponseisnotappreciable(4,7).Forotherconditionsitisrecommendedtocalibratethedosimetrysystembythefinaluserunderspecificenvironmentalconditions.1.1Thispracticecoversproceduresforusingthecellulosetriacetate(CTA)dosimetrysystemformeasuringabsorbeddoseanddoseprofileinmaterialsirradiatedbyelectronsandphotonsintermsofabsorbeddosetowater.TheCTAdosimeterisaroutinedosimeterespeciallyusefulformeasurementofdosedistribution.Note1Cellulosetriacetatedosimeterreferstountintedfilmdosimeter.1.2Thispracticeappliesprovidedthefollowingconditionsaresatisfied.1.2.1Theabsorbed-doserangeis10kGyto300kGyforelectronsandphotons.1.2.2Theabsorbed-doseraterangeis3Gy/sto41010Gy/s().1.2.3Theradiation-energyrangeforelectronsis0.2to50MeV.1.2.4Theradiation-energyrangeforphotonsis0.1to50MeV.1.2.5Theirradiation-temperaturerangeofthedosimeteris-10to70C.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:Doublesamplingplansbyattributeswithminimalsamplesizes,indexedbyproducer'sriskquality(PRQ)andconsumer'sriskquality(CRQ)
【原文标准名称】:厂方风险质量(PRQ)和消费者风险质量(CRQ)索引,用最少样本量属性的二重抽样计划
【标准号】:ISO28801-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-03-15
【实施或试行日期】:2011-03-15
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC69
【标准类型】:()
【标准水平】:()
【中文主题词】:验收(鉴定);应用;消费者与供货者的关系;缺陷与故障;定义(术语);落纱缸;误差;检验;计数检查;质量保证;质量控制;质量水平;质量管理;随机试样;风险;样本量;样品试验;抽样方法;抽样方案;统计方法分析;统计质量控制;统计学;供应商风险;单位
【英文主题词】:Acceptance(approval);Applications;Consumer-supplierrelations;Defects;Definitions;Doffingcylinders;Errors;Inspection;Inspectionbyattributes;Qualityassurance;Qualitycontrol;Qualitylevel;Qualitymanagement;Randomsamples;Risk;Samplesizes;Sampletests;Samplingmethods;Samplingplan;Statisticalmethodsofanalysis;Statisticalqualitycontrol;Statistics;Supplierrisk;Units
【摘要】:ThisInternationalStandardprovidesdoublesamplingplansbyattributesfortheacceptanceinspectionoflotsofdiscreteitems.Theplansareindexedbytheproducer'sriskquality(PRQ)andtheconsumer'sriskquality(CRQ)wherethenominalproducer'sandconsumer'srisksarerespectivelyeither(5%,5%),(5%,10%)or(10%,10%).Plansareprovidedforinspectionforpercentnonconformingandforinspectionfornonconformitiesper100items.Thelotisacceptediftherearenononconformingitems(nonconformities)inthefirstrandomsample,andrejectedifitcontainstwoormorenonconformingitems(nonconformities).Ifpreciselyonenonconformingitemisfoundinthefirstsample,asecondrandomsampleisdrawn;thelotisthenacceptedifthesecondsamplecontainsnononconformingitems(nonconformities)andrejectedotherwise.TheobjectiveofthisInternationalStandardistoprovideproceduresthatenablelotdispositiontobedeterminedquicklyandeconomicallyifqualityisparticularlygoodorbad.Forintermediatequality,asecondsampleisdrawninordertobeabletodiscriminatemorereliablybetweenacceptableandunacceptablelots.Thetwosamplesizesarechosentominimizethemaximumexpectedsamplesizewithrespecttoincomingqualitysubjecttothenominalrisksnotbeingexceeded.Similarly,theplansmaybeusedtotestthehypothesisthatalotorprocessqualitylevelisequaltothePRQ(i.e.acceptable)againstthealternativehypothesisthatthequalitylevelisequaltotheCRQ(i.e.unacceptable).Theplansarepreferabletosinglesamplingplanswherethecostofinspectionishigh,wherethedelayanduncertaintycausedbythepossiblerequirementforsecondsamplesisinconsequentialandwherearelativelylargeratiooftheconsumer'sriskqualitytotheproducer'sriskqualitycanbetolerated.Theplansaresuitableforisolatedlotsorforshortseriesoflots,wherethesumofthetwosamplesizesisnolargerthanabout10%ofthesizeofthelot.Theplansarealsosuitableforcontinuingseriesoflotswhenlotsthatfailtosatisfytheacceptancecriteriaare100%inspectedandallnonconformingitemsreplacedbyconformingitems;however,forcontinuingseriesoflots,considerationshouldalsobegiventousingdoublesamplingplansfromISO2859-1.Thestatisticaltheoryunderlyingtheplans,tablesandfiguresisprovidedinAnnexA.
【中国标准分类号】:
【国际标准分类号】:03_120_30
【页数】:78P.;A4
【正文语种】:英语