BS 7489-1991 用于防止小船引燃电器设备周围可燃气体的电器设备保护规范
时间:2024-05-18 12:22:49 来源: 标准资料网 作者：标准资料网 阅读：8511
【英文标准名称】:Specificationforprotectionofelectricaldevicesusedonsmallcrafttopreventignitionofsurroundingflammablegases
【原文标准名称】:用于防止小船引燃电器设备周围可燃气体的电器设备保护规范
【标准号】:BS7489-1991
【标准状态】:作废
【国别】:英国
【发布日期】:1991-09-30
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:水路运输工程部件;小艇;不透水性试验;防护电气设备;试验条件;作标记;试验设备;水路运输工程;电气设备;热试验;漏泄试验;燃烧试验;火灾危险;可燃性环境
【英文主题词】:
【摘要】:
【中国标准分类号】:U09
【国际标准分类号】:
【页数】:12P;A4
【正文语种】:英语
【英文标准名称】:Methodsoftestingcement-Determinationofthewatersolublechromium(VI)contentofcement
【原文标准名称】:测试水泥用方法.水泥的水溶解铬(VI)含量的测定
【标准号】:BSEN196-10-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-08-31
【实施或试行日期】:2006-08-31
【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】:分析;粘合剂;水泥;化学分析和测试;铬;铬(6价);建筑;施工材料;含量测定;萃取;萃取分析法;检验规范;数学计算;部分;试剂;基准方法;抽样方法;规范(验收);测试;测试条件;水溶解
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiesthemethodforthedeterminationofthewater-solublechromium(VI)contentofcement.Areferencemethodisdescribedconsistingoftwostages,anextractionprocedureandananalysisofthefilteredextract.Guidanceonotherextractionprocedures,suitableforscreeningtests,forfactoryproductioncontrolorotherpurposes,isgivenbutincaseofdisputeorfailuretocomplywitharegulatorylimitonlythereferencemethodisused.Thereferencemethodhasalternativeswherebythefilteredextractmaybesubjectedtoanoxidationstepornot.Thecriteriabywhichtheappropriateprocedureisselectedaresetdown.Otherinstrumentalproceduresmaybeusedfortheanalysisofthefilteredextractprovidedtheyarecalibratedagainsttheanalysisofthefilteredextractusingthereferenceprocedure.Inthecaseofadispute,onlythereferencemethodisused.AnnexAsetsoutanormativeproceduretobefollowedincasethistestmethodisusedasthebasisforevaluationofconformityofacementwiththeregulatorylimitinDirective2003/53/EC.ThisEuropeanStandarddescribesamethodthatappliestocements.Itmayhavewiderapplicabilitybutthiswouldneedtobeverifiedbytestingonaproduct-by-productbasis.GuidanceinthepossibleapplicationofthisEuropeanStandardtothedeterminationofthewater-solublechromium(VI)contentofcement-containingpreparationsisgiveninAnnexB.AnnexesCandDprovideinformationonothertestproceduresbasedonpasteextractionandthusdepartfromtheperformanceofcementinitsnormalconditionsofuse.Theymaybecarriedoutwithorwithouttheoxidationprocess.Usersshouldbeawarethatresultsusingthesemethodsmightbesignificantlydifferenttothoseobtainedbythereferencemethod.Inthecaseofdisputeorfailuretocomplywiththeregulatorylimitonlythereferencemethodisused.AnnexEprovidesguidanceonamethodfordeterminationoftheexcessreducingagentcontentofcementasusedinthefactoryinternalcontrolsystemofsomecountries.Manufacturersusingsuchaninternalcontrolmethodshouldassurethemselvesoftherelevanceofresultsincomparisonwithtestingbythereferencemethod.
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:42P;A4
【正文语种】:英语
Product Code:SAE AMS5700
Title:Steel, Corrosion and Heat Resistant, Bars, Forgings, and Rings 13.5cr 13.5ni 0.35mo 2.2w Annealed
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat resistant steel in the form of bars, forgings, flash welded rings, and stock for forging or flash welded rings. These products have been used typically for parts requiring resistance to wear and to corrosion by combustion products at operating temperatures, but usage is not limited to such applications.