ISO 11665-6-2012 环境辐射性测量.空气:氡-222.第6部分:放射性浓度的点测法
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【英文标准名称】:Measurementofradioactivityintheenvironment-Air:radon-222-Part6:Spotmeasurementmethodoftheactivityconcentration
【原文标准名称】:环境辐射性测量.空气:氡-222.第6部分:放射性浓度的点测法
【标准号】:ISO11665-6-2012
【标准状态】:现行
【国别】:国际
【发布日期】:2012-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC85
【标准类型】:()
【标准水平】:()
【中文主题词】:空气;空气污染;大气;平均;污染物;数据分析;沉积物;测定;环境;估计;气体;测量;测量设备;测量仪器;测量技术;测量方法;计量学;放射性;放射能;氡;取样;抽样方法;表面;试验
【英文主题词】:Air;Airpollution;Atmosphere;Average;Contamination;Dataanalysis;Deposit;Determination;Environment;Estimation;Gases;Measurement;Measuringequipment;Measuringinstructions;Measuringtechniques;Methodsformeasuring;Metrology;Radioactive;Radioactivity;Radon;Sampling;Samplingmethods;Surfaces;Testing
【摘要】:
【中国标准分类号】:F74
【国际标准分类号】:17_240
【页数】:13P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforUseofaDichromateDosimetrySystem
【原文标准名称】:重铬酸盐剂量测定系统使用的标准规程
【标准号】:ASTMISO/ASTM51401-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:ICS17.240;absorbeddose;absorbeddosemeasurements;dosimeter;dichromatedosimeter;dichromatedosimetrysystem;ionizingradiation
【摘要】:4.1Thedichromatesystemprovidesareliablemeansformeasuringabsorbeddoseinwater.Itisbasedonaprocessofreductionofdichromateionstochromicionsinacidicaqueoussolutionbyionizingradiation.4.2Thedosimeterisasolutioncontainingsilveranddichromateionsinperchloricacidinanappropriatecontainersuchasasealedglassampoule.Thesolutionindicatesabsorbeddosebyachange(decrease)inopticalabsorbanceataspecifiedwavelength(s)(3).Acalibratedspectrophotometerisusedtomeasuretheabsorbance.4.3EffectofIrradiationTemperature:4.3.1Thedosimeterresponsehasatemperaturedependenceduringirradiationthatisapproximatelyequalto-0.2%perdegreeCelsiusbetween25and50176;C.Attemperaturesbelow25176;C,thedependenceissmaller.Thedosimeterresponsebetween5and50176;CisshowninTable1,wheretheresponseatagiventemperatureistabulatedrelativetotheresponseat25176;C(4,5).4.3.2ThedatainTable1maybefittedwithanappropriateformulaforconvenienceofinterpolationasfollows:Rt5b01b1tb2(2)where:Rt=dosimeterresponseattemperaturetrelativetothatat25176;C.ThecurvegeneratedfromthefitteddataisshowninFig.1.4.4Noeffectofambientlight(evendirectsunlight)hasbeenobservedondichromatesolutionsinglassampoules(6).4.5Forcalibrationwithphotons,thedichromatedosimetershallbeirradiatedunderconditionsthatapproximateelectronequilibrium.4.6TheabsorbeddoseinmaterialsotherthanwaterirradiatedunderequivalentconditionsmaybecalculatedusingtheproceduresgiveninASTMPracticesE666,E668andISO/ASTMGuide51261.4.7Thedosimeterresponseisdependentonthetypeandenergyoftheradiationemployed.Forexample,theresponseinhighenergy(10MeV)electronbeamsisreportedtobeapproximately3%lowerthantheresponseincobalt-60radiation(2).Thedosimetershallbecalibratedinaradiationfieldofthesametypeandenergyasthatinwhichitistobeused.4.8Providedthedosimetersolutionispreparedasdescribedinthisdocument,andstepsaretakentoavoidcontamination,thedosimetersolutionstoredorsealedinglassvessels(forexample,ampoules)isstablebeforeandafterirradiation.1.1Thispracticecoversthepreparation,testing,andprocedureforusingtheacidicaqueoussilverdichromatedosimetrysystemtomeasureabsorbeddoseinwaterwhenexposedtoionizingradiation.Thesystemconsistsofadosimeterandappropriateanalyticalinstrumentation.Forsimplicity,thesystemwillbereferredtoasthedichromatesystem.Itisclassifiedasareferencestandarddosimetrysystem(seeISO/ASTMGuide51261).1.2Thispracticedescribesthespectrophotometricanalysisproceduresforthedichromatesystem.1.3Thispracticeappliesonlyto947;-rays,x-rays/bremsstrahlun,andhighenergyelectrons.1.4Thispracticeappliesprovidedthefollowingconditionsaresatisfied:1.4.1Theabsorbeddoserangeisfrom2X103to5X104Gy.1.4.2Theabsorbeddoseratedoesnotexceed600Gy/pulse(12.5pulsespersecond),ordoesnotexceedanequivalentdoserateof7.5kGy/sfromcontinuoussources(1).1.4.3Forradionuclidegamma-raysources,theinitialphotonenergyshallbegreaterthan0.6MeV.Forbremsstrahlungphotons,theinitialenergyoftheelectronsusedtoproducethebremsstrahlungphotonsshallbeequaltoorgreaterthan2MeV.Forelectronbeams,theinitialelectronenergyshallbegreaterthan8MeV.Note18212;Thelowerenergylimitsgivenareappropriateforacylindricaldosimeterampouleof12mmdiameter.Correctionsfordisplacementeffectsanddosegradientacrosstheampoulemayberequiredforelectronbeams(2).Thedichromatesystemmaybeusedatlowerenergiesbyemployingth......
【中国标准分类号】:
【国际标准分类号】:17_240
【页数】:6P.;A4
【正文语种】:
【英文标准名称】:Sectionalspecification:fixedtantalumcapacitorswithsolidornon-solidelectrolyte;GermanversionEN130200:1993
【原文标准名称】:分规范.固体或非固体电解质的钽固定电容器
【标准号】:EN130200-1993
【标准状态】:现行
【国别】:
【发布日期】:1993-10
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电解电容器;液体;固态的;规范(认可);试验;电容器;设计认证;测量技术;质量评定程序;质量评定;特性;元部件;规范;详细规范;固定电容器;质量;额定值;空白格式;分规范;钽电容器;测量方法;电解质;定义;钽
【英文主题词】:Blankforms;Bumptests;Capacitors;Components;Definition;Definitions;Designcertifications;Detailspecification;Electrolytes;Electrolyticcapacitors;Fixedcapacitors;Liquid;Measuringtechniques;Methodsformeasuring;Properties;Quality;Qualityassessment;Qualityassessmentprocedures;Ratings;Sectionalspecification;Shocks;Solid;Specification;Specification(approval);Tantalum;Tantalumcapacitors;Tantalumelectrolyticcapacitors;Testing
【摘要】:
【中国标准分类号】:L11
【国际标准分类号】:31_060_40
【页数】:34P.;A4
【正文语种】:英语
