ASTM ISO/ASTM51261-2002 辐射处理用剂量测定体系的选择和校准的标准指

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【英文标准名称】:StandardGuideforSelectionandCalibrationofDosimetrySystemsforRadiationProcessing
【原文标准名称】:辐射处理用剂量测定体系的选择和校准的标准指
【标准号】:ASTMISO/ASTM51261-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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;calibrationfacility;dosetraceability;dosimeter;dosimeterselection;dosimetercalibration;dosimetrysystem;electronbeam;gammaray;ionizingradiation;primary-standarddosimeter;qualityassurance;radiationprocessing;reference-s
【摘要】:4.1Ionizingradiationisusedtoproducevariousdesiredeffectsinproducts.Examplesincludethesterilizationofmedicalproducts,processingoffood,modificationofpolymers,irradiationofelectronicdevices,andcuringofinks,coatings,andadhesives(1,2).Theabsorbeddosesemployedintheseapplicationsrangefromabout10Gytomorethan100kGy.4.2Regulationsforsterilizationofmedicalproductsandradiationprocessingoffoodexistinmanycountries.Theseregulationsmayrequirethattheresponseofthedosimetrysystembecalibratedandtraceabletonationalstandards(3,4,5).Adequatedosimetry,withproperstatisticalcontrolsanddocumentation,isnecessarytoensurethattheproductsareproperlyprocessed.4.3Properdosimetricmeasurementsmustbeemployedtoensurethattheproductreceivesthedesiredabsorbeddose.Thedosimetersmustbecalibrated.Calibrationofaroutinedosimetrysystemcanbecarriedoutdirectlyinanationaloraccreditedstandardslaboratorybystandardizedirradiationofroutinedosimeters.Alternatively,itmaybecarriedoutthroughtheuseofalocal(in-house)calibrationfacility(6)orinaproductionirradiator.Allpossiblefactorsthatmayaffecttheresponseofdosimeters,includingenvironmentalconditionsandvariationsofsuchconditionswithinaprocessingfacility,shouldbeknownandtakenintoaccount.Theassociatedanalyticalinstrumentationmustalsobecalibrated.1.1Thisguidecoversthebasisforselectingandcalibratingdosimetrysystemsusedtomeasureabsorbeddoseingamma-rayorX-rayfieldsandinelectronbeamsusedforradiationprocessing.Itdiscussesthetypesofdosimetrysystemsthatmaybeemployedduringcalibrationoronaroutinebasisaspartofqualityassuranceincommercialradiationprocessingofproducts.Thisguidealsodiscussesinterpretationofabsorbeddoseandbrieflyoutlinesmeasurementsoftheuncertaintiesassociatedwiththedosimetry.Thedetailsofthecalibrationoftheanalyticalinstrumentationareaddressedinindividualdosimetrysystemstandardpractices.1.2Theabsorbed-doserangecoveredisupto1MGy(100Mrad).Sourceenergiescoveredarefrom0.1to50MeVphotonsandelectrons.1.3Thisguideshouldbeusedalongwithstandardpracticesandguidesforspecificdosimetrysystemsandapplicationscoveredinotherstandards.1.4Dosimetryforradiationprocessingwithneutronsorheavychargedparticlesisnotcoveredinthisguide.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:
【页数】:19P.;A4
【正文语种】:英语


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【英文标准名称】:SupplementtoIEEEstandardformetal-cladandstation-typecubicleswitchgear:Currenttransformeraccuracies
【原文标准名称】:金属包覆固定式组合开关设备IEEE标准的补充件:流体变化的准确度
【标准号】:IEEEC37.20.2b-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:金属覆层;断路器;电气工程;开关设备
【英文主题词】:switchgears;metalcoatings;circuit-breakers;electricalengineering
【摘要】:
【中国标准分类号】:K31
【国际标准分类号】:29_120_60
【页数】:3P;A4
【正文语种】:英语


Product Code:SAE AMS2249
Title:Chemical Check Analysis Limits, Titanium and Titanium Alloys
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification defines limits of variation for determining acceptability of the composition of cast or wrought titanium and titanium alloy parts and material acquired from a producer.When specifically referenced in the material specification, the purchaser may apply check analysis limits to determine the acceptability of parts and materials at purchaser final acceptance or verification testing operation.Check analysis limits are not for producers use at producer’s acceptance testing. Composition of parts and materials must conform to the limits of the material specification. Check limits are not permitted for ladle or ingot analysis.