ASTM C 450-2008 公称管道尺寸(NPS)的管道隔热配件覆盖物和容器绝热材料的制造用标准实施规程
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【英文标准名称】:StandardPracticeforFabricationofThermalInsulatingFittingCoversforNPSPiping,andVesselLagging
【原文标准名称】:公称管道尺寸(NPS)的管道隔热配件覆盖物和容器绝热材料的制造用标准实施规程
【标准号】:ASTMC450-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008-05-01
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1Thispracticeprovidestablesofdimensionsofpreformedinsulationthatshallbeusedinfabricatingcoversforuseonvalves,ells,tees,flanges,andvesselsinthepressurerangefrom150to1500psi(1to10MPa).Thesetables,whicharepartofthisstandard,arepublishedseparatelyastheASTMRecommendedDimensionalStandardsforFabricationofThermalInsulationFittingCoversforNPSPiping,andVesselLagging.ThetablesprovidedimensionsforuseinformingpipefittingcoversforNPSpipeoperatingathightemperatureandlowtemperature.Thetablesalsoincludedimensionsforuseinformingthermalinsulationintocurvedsegments,andlagging,forapplicationonvessels.Thispracticedoesnotapplytoreflective-typeinsulation.1.2Thispracticedoesnotspecifyfabricationmethods.Thermalinsulationforfittingcoversisformedbynumerousfabricationmethods.Ingeneral,insulationsarecutbycircularorbandsaws,shapedbygrindersormillers,ormolded.Eachmethodhascertainadvantagesanddisadvantages,dependinguponthematerialtobeformed,numberofcutsrequired,materialwastepermissible,andquantityoffittingsbeingproduced.Fittingpartsareassembledusingadhesivesandfabricationcementsappliedusingdippots,rollers,doctorblades,brush,ortrowel,dependinguponthematerialsbeingused.Anyspecificationofthefabricationtechniquesisbeyondthescopeofthisstandard.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:
【页数】:3P;A4
【正文语种】:英语
【英文标准名称】:Radiationprotectioninstrumentation-Measurementofdiscreteradionuclidesintheenvironment-Insituphotonspectrometrysystemusingagermaniumdetector
【原文标准名称】:辐射防护仪表环境中放射性核素的测量使用锗探测器的现场光子光谱测定系统
【标准号】:IEC61275-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-09
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC45B
【标准类型】:()
【标准水平】:()
【中文主题词】:光谱测定法;放射性核素;锗探测器;辐射测量;辐射防护;仪器装置
【英文主题词】:radiationprotection;radiationmeasurement;germaniumdetectors;instrumentation;spectrometry;radionuclides
【摘要】:ThisInternationalStandardisapplicabletoaportableortransportablephotonspectrometryassemblyusingagermanium(Ge)detectortosurvey,insitu,generallyat1mabovegroundlevel,areasintheenvironmentfordiscreteradionuclides.Suchequipmentisusedtomakerapidassessmentsofactivitylevelsandcorrespondingfreeairexposureratesfromphotonemittingradionuclides.Suchmeasurementsmaybeusedtodevelopguidanceforsubsequentfollow-onaction,forexampleincludingradiologicalassessments,samplingandmonitoringprogrammes.(Thisstandarddoesnotapplytoairbornemeasurementsystems,whicharecoveredbyaseparatestandard.SeeIEC61134.)Thisstandardspecifiesforsuchanassemblythegeneralcharacteristics,testmethodsfortheevaluationofradiationcharacteristics,electrical,mechanical,safetyandenvironmentalcharacteristicsspecifictotheapplicationsdescribedabove.Adviceisalsoprovidedinannexesastothecalibration,appropriateuseandinterpretationofthesystemforinsitumeasurements.Aninsituspectrometrysystemisacombinationofinstrumentsorsubassembliesdesignedtomeasure,insitu,thefluxofgammaraysincidentonthedetector,inordertorapidlysurveyareasfordiscreteradionuclidespresentinthesoilorair,eithernaturalormanmade.Thepurposeofthisstandardistospecifytheperformancecharacteristicsofassembliesintendedforthedeterminationofsurfacesoilactivity.Accordingly,thisstandarda)specifiesthefunctionsandperformancecharacteristicsofmeasuringassemblies,andb)specifiesthemethodsoftesttobeusedtodeterminecompliancewiththerequirementsofthisstandard.
【中国标准分类号】:F84
【国际标准分类号】:13_280;17_240
【页数】:28P;A4
【正文语种】:英语
基本信息
| 标准名称： | 硫酸铵氮含量的测定 甲醛法 |
| 英文名称： | Ammonium sulphate--Determination of nitrogen content--Formaldehyde method |
| 中标分类： |
化工 >>
无机化工原料 >>
无机盐 |
| 替代情况： | 被GB 535-1995代替 |
| 发布日期： | |
| 实施日期： | 1984-11-01 |
| 首发日期： | |
| 作废日期： | 1996-08-01 |
| 出版日期： | |
| 页数： | 2页 |
适用范围
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前言
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引用标准
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所属分类： 化工 无机化工原料 无机盐