TB/T 1500.4-2009 接发列车作业 第4部分 单双线半自动闭塞集中联锁(未设信号员)
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来源:标准资料网
基本信息
标准名称: | 接发列车作业 第4部分 单双线半自动闭塞集中联锁(未设信号员) |
替代情况: | 替代TB/T 1503-2003 |
发布部门: | 中华人民共和国铁道部 |
发布日期: | 2009-02-12 |
实施日期: | 2009-03-01 |
首发日期: | |
作废日期: | |
出版社: | 中国铁道出版社 |
出版日期: | 2009-03-01 |
适用范围
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前言
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目录
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引用标准
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所属分类: 铁路 机车车辆通用标准 走动部分 铁路工程 铁路车辆 车辆
【英文标准名称】:StandardTestMethodforTotalActiveBiomassinCoolingTowerWaters(KoolKountAssay;KKA)
【原文标准名称】:冷却塔水中总活性生物体的标准试验方法
【标准号】:ASTMD6530-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D19.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:colorimetricbioassay;coolingtowerwater;triphenyltetrazoliumchloride;viableactivebiomass
【摘要】:Thistestmethodisusefulforrapiddeterminationofviableactivebiomassconcentrationsincoolingtowerwaters.Theefficiencyofcoolingtowersisdirectlyaffectedbytheconcentrationofbiomassinthecoolingtowerwaters.Asbiomassconcentrationsincrease,biofilmformationoccursresultinginadecreaseintheefficiencyofheatexchangeinthetower.Currenttestsformonitoringthebiomassconcentrationincoolingtowersrequireatleast36hforgrowthofthemicroorganismsonasolidagarsurfaceforcounting.Replicationofmicroorganismsoverthe36-hperiodbeforeresultsareavailablecreatesanaqueousenvironmentwhichisnolongerrepresentedbythedatagenerated.Timelytestresultscanassistinminimizingbiocideadditiontocontrolbiomassconcentrations.KoolKountprovidesdatawithinhourstoallowformoreprecisecontrolofactivebiomassconcentrationsinthewaters.1.1Thistestmethodcoversthedeterminationofviableactivebiomassincoolingtowerwaterintherangefrom102to108cfu/mL(1).Itisasemiquantitativetestmethod.1.2Thistestmethodwasusedsuccessfullywithreagentwater,physiologicsaline,andcoolingtowerwaters.Itistheuser''sresponsibilitytoensurethevalidityofthistestmethodforwatersofuntestedmatrices.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection.MIL-STD-188C (NOTICE 3), MILITARY STANDARD: MILITARY COMMUNICATIONS SYSTEM TECHNICAL STANDARDS (19 JUN 1989) [S/S BY S/S BY MIL-STD-188/100 AND MIL-STD-188/200]., MIL-STD-188C, dated 24 November 1969, is hereby canceled.MIL-STD-188C has been superseded by MIL-STD-188-100, Common Long Hauland Tactical Communication System Technical Standards and MIL-STD-188-200,System Design & Engineering Standards for TacticalCommunications.