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ASTM D2685-2011 用气体色层分离法对六氟化硫中空气和四氟化碳含量的标准试验方法

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【英文标准名称】:StandardTestMethodforAirandCarbonTetrafluorideinSulfurHexafluoridebyGasChromatography
【原文标准名称】:用气体色层分离法对六氟化硫中空气和四氟化碳含量的标准试验方法
【标准号】:ASTMD2685-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:D27.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:空气;四氟化碳;六氟化硫;大气分析;四氟化碳含量
【英文主题词】:air;carbontetrafluoride;sulfurhexafluoride;Airanalysis;Carbontetrafluoridecontent
【摘要】:Airandcarbontetrafluoride(CF4)aretwocontaminantsofinterestinsulfurhexafluoride(SF6).BothofthesecontaminantsadverselyaffecttheperformanceofSF6whenusedasanelectricalinsulatinggas.SpecificationformaximumlevelsofthesecontaminantsaregiveninSpecificationD2472.GaschromatographyisusedtoseparatethesecontaminantsfromasampleofSF6andtodeterminetheirconcentration.1.1Thistestmethodcoversthedeterminationofair(Note1)andcarbontetrafluorideasimpuritiesinsulfurhexafluoride.Note18212;Nitrogen,oxygen,oranyoftheirmixturesisconsideredtobeair.Commercialgradeairornitrogenisusedforstandardization.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:71_060_50
【页数】:3P.;A4
【正文语种】:


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MIL-HDBK-1004/6, MILITARY HANDBOOK, LIGHTNING PROTECTION (30 MAY 1988)., This handbook provides basic design guidance developed from extensive re-evaluation of facilities. It is intended for use by experienced architects and engineers. The contents cover electrical design considerations applying to lightning protection systems.

【英文标准名称】:StandardGuideforSelectionandUseofPortableRadiologicalSurveyInstrumentsforPerformingInSituRadiologicalAssessmentstoSupportUnrestrictedReleasefromFurtherRegulatoryControls
【原文标准名称】:为确保退役(退出使用)进行现场辐射评定所采用的便携式辐射测量仪的选择和使用标准指南
【标准号】:ASTME1893-2008a
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E10.03
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:Decommissioningoperations;Decontamination;In-situinspection/analysis;Portableradiologicalsurvey;Radiologicalexamination
【摘要】:Thepurposeofthisstandardistoprovidetheuserinformationandguidanceforselectingandusinginstrumentationthatwillprovidemeasurementresultsthatcanbecomparedtocriteriaforunrestricteduse.Useofthisstandardwillprovidegreaterassurancethatthemeasurementsobtainedwillbetechnicallyandadministrativelysufficientformakingdecisionsregardingcompletionofdecontaminationand/ordemolition/removalactivities.Useofthisstandardwillprovidegreaterassurancethatthemeasurementsobtainedwillbetechnicallyandadministrativelysufficienttomeetallapplicableregulatoryrequirementsforunrestrictedreleaseofacomponentforrecycleorreuse,orforunrestrictedreleaseofaremainingsurfaceorarea.1.1Thisstandardprovidesrecommendationsontheselectionanduseofportableinstrumentationthatisresponsivetolevelsofradiationthatareclosetonaturalbackground.Theseinstrumentsareemployedtodetectthepresenceofresidualradioactivitythatisat,orbelow,thecriteriaforreleasefromfurtherregulatorycontrolofacomponenttobesalvagedorreused,orasurfaceremainingattheconclusionofdecontaminationand/ordecommissioning.1.2Thechoiceoftheseinstruments,theiroperatingcharacteristicsandtheprotocolsbywhichtheyarecalibratedandusedwillprovideadequateassurancethatthemeasurementsoftheresidualradioactivitymeettherequirementsestablishedforreleasefromfurtherregulatorycontrol.1.3Thisstandardisapplicabletotheinsitumeasurementofradioactiveemissionsthatinclude:1.3.1alpha1.3.2beta(electrons)1.3.3gamma1.3.4characteristicx-rays1.3.5Themeasurementofneutronemissionsisnotincludedaspartofthisstandard.1.4Thisstandarddosenotaddressinstrumentationusedtoassessresidualradioactivitylevelscontainedinairsamples,surfacecontaminationsmears,bulkmaterialremovals,orhalf/wholebodypersonnelmonitors.1.5Thisstandarddoesnotaddressrecordsretentionrequirementsforcalibration,maintenance,etc.asthesetopicsareconsideredinseveralofthereferenceddocuments.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:F84
【国际标准分类号】:17_240
【页数】:28P.;A4
【正文语种】:英语