基本信息
标准名称: | 仪器仪表可靠性评定程序 |
中标分类: |
仪器、仪表 >>
仪器、仪表综合 >>
基础标准与通用方法 |
替代情况: | 原标准号ZB Y321-85 |
发布部门: | 中华人民共和国机械电子工业部 |
发布日期: | 1999-04-05 |
实施日期: | 1999-04-05 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
提出单位: | 上海工业自动化仪表研究所 |
归口单位: | 上海工业自动化仪表研究所 |
起草单位: | 上海工业自动化仪表研究所 |
起草人: | 黎惠霖、计时华 |
出版社: | 机械工业出版社 |
出版日期: | 1999-04-05 |
页数: | 12页 |
适用范围
本标准规定了评定电子类仪器仪表(下称产品)已经达到的可靠性;对于由机械部件组成或由机械部件、电子元器件混合组成的产品在预防性维修或故障检修及明替换零件的条件下也可参照执行。但不能用于产品的可靠性预计。
前言
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引用标准
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所属分类: 仪器 仪表 仪器 仪表综合 基础标准与通用方法
【英文标准名称】:StandardTestMethodforEnumerationofNon-TuberculosisMycobacteriainAqueousMetalworkingFluidsbyPlateCountMethod
【原文标准名称】:用板计数法计算水性金属加工液中非结核分枝杆菌的标准试验方法
【标准号】:ASTME2563-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E34.50
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:含水的;计算;流体;工业用油;润滑剂;金属加工;板;测试
【英文主题词】:acid-fastbacteria;hypersensitivitypneumonitis;metalworkingfluid;non-tuberculousMycobacteria;rapidlygrowingMycobacteria
【摘要】:Thismethodallowsfortherecoveryandenumerationofviableandculturable,non-tuberculosis,rapidlygrowingMycobacteria(M.immunogenum,M.chelonae,M.absessus,M.fortuitum,andM.smegmatis)inthepresenceofhighgramnegativebackgroundpopulationsinmetalworkingfluidfieldsamples.Duringthepastdecadeithasbecomeincreasinglyapparentthatnon-tuberculousMycobacteriaarecommonmembersoftheindigenousMWFbacterialpopulation.Thispopulationispredominantlycomprisedofgramnegativebacteriaandfungi.Mycobacterialcontaminationofmetalworkingfluidshasbeenputativelyassociatedwithhypersensitivitypneumonitis(HP)amongstmetalgrindingmachinists.Thedetectionandenumerationoftheseorganismswillaidinbetterunderstandingofoccupationalhealthrelatedproblemsandabetterassessmentofantimicrobialpesticideefficacy.Themeasurementofviableandculturablemycobacterialdensitiescombinedwiththetotalmycobacterialcounts(includingviableculturable(VC),viable-nonculturable(VNC)andnonviable(NV)counts)isusuallythefirststepinestablishinganypossiblerelationshipbetweenMycobacteriaandoccupationalhealthconcerns(forexample,HP).Themethodcanbeemployedinsurveystudiestocharacterizetheviable-culturablemycobacterialpopulationdensitiesofmetalworkingfluidfieldsamples.Thismethodisalsoapplicableforestablishingthemycobacterialresistanceofmetalworkingfluidformulationsbydeterminingmycobacteriumsurvivalbymeansofplatecounttechnique.ThismethodcanalsobeusedtoevaluatetherelativeefficacyofmicrobicidesagainstMycobacteriainmetalworkingfluids.1.1ThistestmethodcoversthedetectionandenumerationofviableandculturablerapidlygrowingMycobacteria(RGM),ornon-tuberculosisMycobacteria(NTM)inaqueousmetalworkingfluids(MWF)inthepresenceofhighnon-mycobacterialbackgroundpopulationusingstandardmicrobiologicalculturemethods.1.2Thedetectionlimitisonecolonyformingunit(CFU)/mLmetalworkingfluid.1.3ThistestmethodinvolvescultureoforganismsclassifiedasLevel2pathogens,andshouldbeundertakenbyatrainedmicrobiologistinanappropriatelyequippedfacility.ThemicrobiologistshouldalsobecapableofdistinguishingthediversecoloniesofMycobacteriafromothermicroorganismcoloniesonaPetridishandcapableofconfirmingMycobacteriabyacidfaststainingmethodThisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:3P.;A4
【正文语种】: