基本信息
| 标准名称： | 识别卡－记录技术 第二部分：磁条 |
| 英文名称： | Identification cards-Recording technique-Part 2: Magnetic stripe |
| 中标分类： |
矿业 >>
矿业综合 >>
技术管理 |
| 替代情况： | 被GB/T 15120.2-94代替 |
| 发布日期： | 1987-10-20 |
| 实施日期： | 1987-10-20 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1995-03-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 11页 |
适用范围
本标准是描述在下面第3章定义的识别卡参数和在国际交换中这种卡的应用的一系列标准之一。
前言
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目录
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引用标准
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所属分类： 矿业 矿业综合 技术管理
【英文标准名称】:StandardPracticeforUseofThermoluminescence-Dosimetry(TLD)SystemsforRadiationProcessing
【原文标准名称】:辐射加工用热致发光剂量测定(TLD)系统使用的标准实施规程
【标准号】:ASTMISO/ASTM51956-2005
【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;dosimetermeasurement;radiationprocessing;thermoluminescencedosimeter;thermoluminescencedosimetrysystem;TLD;ICS
【摘要】:4.1Duringtheirradiationofcertaincrystallinematerials,forexample,LiF,CaF2,CaSO4,Li2B4O7,andAl2O3,thefillingofelectronandholetrapsbetweenthegroundstateandtheconductionbandresultsinstoredenergythatcanbereleasedasfluorescenceduringheating.Thermoluminescencedosimetrysystemsprovideameansofdeterminingabsorbeddosetomaterialsbymeasuringthisfluorescencebythecontrolledheatingoftheirradiatedcrystallinematerial.4.2Thermoluminescencedosimeters(TLDs)areavailablefromdifferentcommericialsuppliersindifferentformssuchasloosepowder,chipsorcrystalsencapsulatedinglassorplastic.4.3TLDscanbereusedbysubjectingtheirradiatedTLDstoanannealingprocessatahighertemperaturetoreleasealltheelectronandholetraps.4.4Inradiationprocessing,TLDsaremainlyusedintheirradiationofbloodproducts(seeISO/ASTMPractice51939),food(seeISO/ASTMPractices51204and51431),andinsectsforsterileinsectreleaseprograms(seeISO/ASTMGuide51940).TLDsmayalsobeusedinotherradiationprocessingapplicationssuchasthesterilizationofmedicalproducts,modificationofpolymers,irradiationofelectronicdevices,andcuringofinks,coatingsandadhesives.(SeeRefs(1,2)4andISO/ASTMPractices51608,51649,and51702).4.5Forradiationprocessing,theabsorbed-doserangeofinterestisfrom1Gyto100kGy.SomeTLDscanbeusedinapplicationsrequiringmuchlowerabsorbeddoses(forexample,forpersonneldosimetry),butsuchapplicationsareoutsidethescopeofthispractice.ExamplesofTLDsandapplicabledoserangesaregiveninTable1.FurtherinformationonvarioustypesofTLDsandtheirapplicationscanbefoundinRefs(3-8).4.6Regulationsforsterilizationofmedicalproducts,irradiationofbloodproducts,andradiationprocessingoffoodexistinmanycountries.Theseregulationsmayrequirethatthedosimetrysystembecalibratedwithtraceabilitytonationalstandards(9,10,11,12).Adequatedosimetry,withproperstatisticalcontrolsanddocumentation,isnecessarytoensurethattheproductsareproperlyprocessed.4.7Properdosimetricmeasurementsshallbeemployedtoensurethattheproductreceivesthedesiredabsorbeddose.ThedosimetersshallbecalibratedasoutlinedinSection8.Allpossiblefactorsthatmayaffecttheresponseofdosimeters,includingenvironmentalconditionsandvariationsofsuchconditionswithinaprocessingfacility,shouldbeknownandtakenintoaccount.Theassociatedmeasurementinstrumentationshallalsobecalibrated.1.1Thispracticecoversproceduresfortheuseofthermoluminescencedosimeters(TLDs)todeterminetheabsorbeddoseinmaterialsirradiatedbyphotonsorelectronsintermsofabsorbeddosetowater.1.2Thispracticecoverssystemsthatpermitabsorbeddosemeasurementsunderthefollowingconditions:1.2.1Theabsorbed-doserangeisfrom1Gyto100kGy.1.2.2Theabsorbed-doserateisbetween1102and11010Gys1.1.2.3Theradiation-energyrangeforphotonsandelectronsisfrom0.1to50MeV.1.3Absorbeddoseandabsorbed-doseratemeasurementsinmaterialssubjectedtoneutronirradiationarenotcoveredinthispractice.1.4ProceduresfortheuseofTLDsfordeterminingabsorbeddoseinradiation-hardnesstestingofelectronicdevicesaregiveninASTMPracticeE668.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:
【页数】:9P.;A4
【正文语种】:英语