【英文标准名称】:StandardPracticeforDosimetryinanElectronBeamFacilityforRadiationProcessingatEnergiesBetween300keVand25MeV
【原文标准名称】:在300KeV和25MeV能量之间进行辐射加工用电子束设备中剂量测定的标准实施规程
【标准号】:ASTMISO/ASTM51649-2005
【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;dosemapping;dosimeter;dosimetrysystem;electronbeam;ionizingradiation;irradiation;irradiatorcharacterization;radiation;radiationprocessing;ICS
【摘要】:4.1Variousproductsandmaterialsareroutinelyirradiatedatpre-determineddosesatelectronbeamfacilitiestopreserveormodifytheircharacteristics.Dosimetryrequirementsmayvarydependingontheradiationprocessandenduseoftheproduct.Forexample,apartiallistofprocesseswheredosimetrymaybeusedisgivenbelow.4.1.1Polymerizationofmonomersandgraftingofmonomersontopolymers,4.1.2Cross-linkingordegradationofpolymers,4.1.3Curingofcompositematerials,4.1.4Sterilizationofmedicaldevices,4.1.5Disinfectionofconsumerproducts,4.1.6Foodirradiation(parasiteandpathogencontrol,insectdisinfestation,andshelf-lifeextension),4.1.7Controlofpathogensandtoxinsindrinkingwater,4.1.8Controlofpathogensandtoxinsinliquidorsolidwaste4.1.9Modificationofcharacteristicsofsemiconductordevices,4.1.10Colorenhancementofgemstonesandothermaterials,4.1.11Researchonradiationeffectsonmaterials.NOTE2-Dosimetryisrequiredforregulatedradiationprocessessuchassterilizationofmedicaldevices(seeISO11137andRefs(1-4)5andpreservationoffood(seeISO/ASTM51431andRef(5).Itmaybelessimportantforotherprocesses,suchaspolymermodification,whichmaybeevaluatedbychangesinthephysicalandchemicalpropertiesoftheirradiatedmaterials.Nevertheless,routinedosimetrymaybeusedtomonitorthereproducibilityofthetreatmentprocess.4.2Dosimetersareusedasameansofmonitoringtheradiationprocess.NOTE3-Measureddoseisoftencharacterizedasabsorbeddoseinwatertohaveatraceablestandardreference.Moreover,materialscommonlyfoundindisposablemedicaldevicesandfoodareapproximatelyequivalenttowaterintheabsorptionofionizingradiation.AbsorbeddoseinmaterialsotherthanwatermaybedeterminedbyapplyingconversionfactorsinaccordancewithISO/ASTMGuide51261.4.3Abeneficialirradiationprocessisusuallyspecifiedbyaminimumabsorbeddosetoachievethedesiredeffectandamaximumdoselimitthattheproductcantolerateandstillbefunctional.Dosimetryisessential,sinceitisusedtodeterminetheselimits,anddosimetryisessentialintheevaluationandmonitoringoftheradiationprocess.4.4Thedosedistributionwithintheproductdependsonprocessloadcharacteristics,irradiationconditions,andoperatingparameters.Theoperatingparametersconsistofbeamcharacteristics(suchaselectronenergyandbeamcurrent),beamdispersionparameters,andproductmaterialhandling.Thesecriticalparametersmustbecontrolledtoobtainreproducibleresults.4.5Beforearadiationfacilityisused,itmustbequalifiedtodemonstrateitsabilitytodeliverspecified,controllabledosesinareproduciblemanner.Thisinvolvestestingtheprocessequipment,calibratingtheequipmentanddosimetrysystem,andcharacterizingthemagnitude,distributionandreproducibilityofthedoseabsorbedbyareferencematerial.4.6Toensurethatproductsareirradiatedwithreproducibledoses,routineprocesscontrolrequiresdocumentedproducthandlingproceduresbefore,duringandaftertheirradiation,consistentorientationoftheproductsduringirradiation,monitoringofcriticalprocessparameters,routineproductdosimetryanddocumentationoftherequiredactivitiesandfunctions.1.1ThispracticecoversdosimetricprocedurestobefollowedinInstallationQualification,OperationalQualificationandPerformanceQualifications(IQ,OQ,PQ),androutineprocessingatelectronbeamfacilitiestoensurethattheproducthasbeentreatedwithanacceptablerangeofabsorbeddoses.OtherproceduresrelatedtoIQ,OQ,PQ,androutineproductprocessingthatmayinfluenceabsorbeddoseintheproductarealsodiscussed.Note1Forguidanceintheselect......
【中国标准分类号】:
【国际标准分类号】:
【页数】:30P.;A4
【正文语种】:英语
基本信息
标准名称: | 钢檩条 钢墙梁(2010年合订本)更正说明 |
替代情况: | 替代05SG521-1~4;被11G521-1~2代替 |
发布部门: | 中华人民共和国住房和城乡建设部 |
发布日期: | 2010-10-18 |
实施日期: | 2010-12-01 |
首发日期: | |
作废日期: | |
起草单位: | 中国建筑标准设计研究院 |
出版社: | 中国建筑标准设计研究院 |
出版日期: | 2010-12-01 |
页数: | 98页 |
适用范围
本书适用于我国非抗震地区、抗震设防烈度小于等于9度地区工业与民用建筑的围护结构设计。
更正内容:
《钢檩条》10G521-1 第11~17、30~36页Q’d,lim数值由于计算有误导致偏差,图集第11~17、30~36页停止使用,请下载附件替代(附件中阴影部分为修正后数据)。
10G521-1 第53页左边图名更正为“高频焊接薄壁H型钢檩条模板图”
10G521-2 第24页表名更正为“高频焊接薄壁H型钢墙梁选用表(9、10、11、12m)”
10G521-2 第25页左边图名更正为“高频焊接薄壁H型钢墙梁模板图”
前言
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目录
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引用标准
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所属分类: 机械 通用机械与设备 真空技术与设备 流体系统和通用件 真空技术