QJ 2544-1993 航天用计算机软件质量度量准则
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基本信息
标准名称: | 航天用计算机软件质量度量准则 |
中标分类: | 航空、航天 >> 航空、航天综合 >> 电子计算机应用 |
ICS分类: | 航空器和航天器工程 >> 航天系统和操作装置 |
发布日期: | 1993-03-30 |
实施日期: | 1991-06-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 17页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 航空 航天 航空 航天综合 电子计算机应用 航空器和航天器工程 航天系统和操作装置
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【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】:Petroleumandnaturalgasindustries.Completionfluidsandmaterials.Measurementofviscouspropertiesofcompletionfluids
【原文标准名称】:石油和天然气工业.完井液和材料.完井液的粘性测定
【标准号】:BSENISO13503-1-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-11-30
【实施或试行日期】:2011-11-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Additives;Completionfluids;Definitions;Liquids;Mathematicalcalculations;Measurement;Measuringtechniques;Naturalgasindustries;Oilindustries;Petroleumproducts;Properties;Rheologicalproperties;Rheology;Velocityofflow;Viscosity;Viscositymeasurement
【摘要】:
【中国标准分类号】:E13
【国际标准分类号】:75_180_10
【页数】:32P;A4
【正文语种】:英语
【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】:Petroleumandnaturalgasindustries.Completionfluidsandmaterials.Measurementofviscouspropertiesofcompletionfluids
【原文标准名称】:石油和天然气工业.完井液和材料.完井液的粘性测定
【标准号】:BSENISO13503-1-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-11-30
【实施或试行日期】:2011-11-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Additives;Completionfluids;Definitions;Liquids;Mathematicalcalculations;Measurement;Measuringtechniques;Naturalgasindustries;Oilindustries;Petroleumproducts;Properties;Rheologicalproperties;Rheology;Velocityofflow;Viscosity;Viscositymeasurement
【摘要】:
【中国标准分类号】:E13
【国际标准分类号】:75_180_10
【页数】:32P;A4
【正文语种】:英语