【英文标准名称】:StandardTestMethodsforElectricalConductivityofAviationandDistillateFuels
【原文标准名称】:航空燃料与馏分燃料电导率测定的标准试验方法
【标准号】:ASTMD2624-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D02.J0.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aviationfuels;conductivitymeter;conductivityunit;distillatefuels;electricalconductivity;in-line;picosiemenspermeter;restconductivity;staticdissipatoradditives;staticelectricity;Aviationfuels;Conductanceandconductivity(electrical)
【摘要】:Theabilityofafueltodissipatechargethathasbeengeneratedduringpumpingandfilteringoperationsiscontrolledbyitselectricalconductivity,whichdependsuponitscontentofionspecies.Iftheconductivityissufficientlyhigh,chargesdissipatefastenoughtopreventtheiraccumulationanddangerouslyhighpotentialsinareceivingtankareavoided.1.1Thesetestmethodscoverthedeterminationoftheelectricalconductivityofaviationanddistillatefuelswithandwithoutastaticdissipatoradditive.Thetestmethodsnormallygiveameasurementoftheconductivitywhenthefuelisuncharged,thatis,electricallyatrest(knownastherestconductivity).1.2Twotestmethodsareavailableforfieldtestsoffuelconductivity.Theseare:(1)portablemetersforthedirectmeasurementintanksorthefieldorlaboratorymeasurementoffuelsamples,and(2)in-linemetersforthecontinuousmeasurementoffuelconductivitiesinafueldistributionsystem.Inusingportablemeters,caremustbetakeninallowingtherelaxationofresidualelectricalchargesbeforemeasurementandinpreventingfuelcontamination.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,see7.1,7.1.1,and11.2.1.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:11P.;A4
【正文语种】:英语


【英文标准名称】:Informationtechnology-GuidelinesforthemanagementofITsecurity-Selectionofsafeguards
【原文标准名称】:信息技术.IT安全管理指南.安全装置的选择
【标准号】:BSISO/IECTR13335-4-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-03-01
【实施或试行日期】:2004-03-01
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:信息交换;通信规程;计划;安全工程;数据处理;IT系统;管理;信息技术;指导手册;网络互连;规则;锁紧装置;选择;保安系统
【英文主题词】:Communicationprocedures;Dataprocessing;Guidebooks;Informationinterchange;Informationtechnology;ITsystems;Lockingdevices;Management;Networkinterconnection;Planning;Rules;Safeguardingsystems;Safetyengineering;Selection
【摘要】:ThispartofISO/IECTR13335providesguidanceontheselectionofsafeguards,takingintoaccountbusinessneedsandsecurityconcerns.Itdescribesaprocessfortheselectionofsafeguardsaccordingtosecurityrisksandconcernsandthespecificenvironmentofanorganization.Itshowshowtoachieveappropriateprotection,andhowthiscanbesupportedbytheapplicationofbaselinesecurity.AnexplanationisprovidedonhowtheapproachoutlinedinthispartofISO/IECTR13335supportsthetechniquesforthemanagementofITsecuritylaidoutinISO/IECTR13335-3.
【中国标准分类号】:L70
【国际标准分类号】:35_040
【页数】:72P.;A4
【正文语种】:英语