标准名称：	住宅建筑装饰工程技术规程(试行)
中标分类：	工程建设 >> 工业与民用建筑工程 >> 建筑构造与装饰工程
发布日期：
实施日期：	1997-07-01
首发日期：
作废日期：
出版日期：
页数：	57页

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【英文标准名称】:StandardGuideforRapidScreeningofVegetationforRadioactiveStrontiumAerialDeposition
【原文标准名称】:放射锶空中沉积用植物的快速筛检用标准指南
【标准号】:ASTMD7362-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D19.04
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:沉积;计量学;辐射测量;放射性;屏蔽;锶;植物
【英文主题词】:emergencyresponse;LiquidScintillationCounting;SolidPhaseExtraction;strontium-89;strontium-90;vegetation
【摘要】:Strontium-90isamajorcomponentofnuclearwasteandisalsoapotentialradioisotopeforuseasaweaponofmassdestructioninaradiologicaldispersaldevice.Itisabeta-emittingradioisotopewithmoderatehalf-life(~30years).Strontium-89isalsoabetaemittingradionuclide,butwithahalf-lifeofonly~50daysitisnotusuallypresentinsignificantquantities.Ifingestedtheradiostrontiummaydepositintheboneofanindividualandthuscancontributeasignificantradiologicaldosetoanaffectedperson.Followinganexplosioninwhichradioactivematerialwaspresent,thepotentialexistsforthematerialtobecomeairborne.Itwillquicklyattachtoatmosphericparticlesandbedepositedonsurfacesastheplumepasses.Thisguideprovidesarapidprocedurebywhichvegetationcanbescreenedtodetermineifradiostrontiumispresentandtoprovideaconservativeestimateofitsdepositiononvegetation.Thisguideisintendedtobeusedinafieldportablelab,orifneeded,canbeperformedcompletelyinthefield;thereforenohazardouschemicalsarerequiredtocompletetheanalysis.However,anoptionfortheuseofacidincertainstepsisdocumentedinthisguide.Thisguideisnotintendedtobeusedforscreeningfoodproductsoranimalfeedfollowinganaccidentorincident.1.1Thisguideprovidesarapidprocedurebywhichvegetationsamplesmaybescreenedforsurfacecontaminationofradioactivestrontium(89Srand90Sr,collectivelyreferredtoasradiostrontium)followinganairborneradioactivedispersalevent.Itprovidesaconservativeestimateofradiostrontiumdepositionthatcanbeusedbydecisionmakersforimmediateactionspriortoobtainingdefinitiveresultsfromafixedlaboratoryasset.1.2Insolubleformsofradiostrontium,suchasthestrontium(90Sr)titanate(SrTiO3)usedinradio-isotopethermal-electricgenerators(RTGs),willnotbemeasuredbythismethod.1.3Non-SIunitsareusedinthecalculationsofthisguideforeaseofuseduringtheemergencyphaseofanevent.Theinstrumentationusedtypicallyprovidescountratesincountsperminute(cpm)ratherthanpersecond(s-1,theSIunit),thusactivityisexpressedindpm(decaysperminute)ratherthanBq.Additionally,USEPAprotectiveguidelinesforsurfacecontaminationareexpressedindpm/100cm2.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F74
【国际标准分类号】:17_240
【页数】:4P.;A4
【正文语种】: