ANSI FM4474-2004 用静态正和/或负差压评价屋顶组件耐模拟风吹起的试验标准
时间:2024-05-09 13:27:19 来源: 标准资料网 作者：标准资料网 阅读：9514
【英文标准名称】:TestStandardforEvaluatingtheSimulatedWindUpliftResistanceofRoofAssembliesUsingStaticPositiveand/orNegativeDifferentialPressures
【原文标准名称】:用静态正和/或负差压评价屋顶组件耐模拟风吹起的试验标准
【标准号】:ANSIFM4474-2004
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Assemblies;Differentialpressures;Evaluations;Lifting;Negative;Positive;Resistance;Roofs;Simulation;Static;Windresistance
【摘要】:Presentsatestmethodfordeterminingandcategorizingwindupliftresistanceofroofassembliesincludingthestructuraldeck.Theobjectiveofthistestistoevaluatethecomparativeresistanceofroofassembliestopositiveand/orpositiveandnegativepressures.Thetestevaluatesthedeckandroofcoversincludingallcomponentsfortheirmethodofattachmenttoeachotherandtotheirsupports.
【中国标准分类号】:P30
【国际标准分类号】:91_010_30
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforSulfate-ReducingBacteriainWaterandWater-FormedDeposits
【原文标准名称】:水和水形成沉积物中硫酸盐还原菌的标准试验方法
【标准号】:ASTMD4412-1984(2002)
【标准状态】:现行
【国别】:
【发布日期】:1984
【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】:硫酸盐还原细菌;沉积物;细菌纲;试验;水
【英文主题词】:water;water-formeddeposits;sulfate;sulfate-reducingbateria
【摘要】:Sulfate-reducingbacteriaarewidelydistributedinmarineandfreshwatermudswhich,inconsequence,frequentlyareladenwiththehydrogensulfideproducedbytheseorganismsduringdissimilatorysulfatereduction.IthasbeenreportedthatDesulfovibriocanformasmuchas10gofsulfideperlitreduringactivemultiplication.Sulfate-reducingbacteriacancausetheexternalorinternalcorrosionofwaterorwastewaterpipelinesandpipelinesforpetroleumandnaturalgas.Theformationofgalvaniccellsbymassivegrowthofsulfate-reducingbacteriaundersuitableconditionsmakesthecorrosionmuchworsethanjusttheeffectofthehydrogensulfideonthemetalorconcrete.1.1Thesetestmethodscovertheprocedureforthedetectionandenumerationbythemostprobablenumber(MPN)techniqueofsulfate-reducingbacteriainwaterorwater-formeddeposits.1.2Twomediapreparationsareprovided.MediumAwhichispreparedwithreagentgradewater,andMediumBwhichispreparedusingthewatertobesampledasthewatersource.MediumBisofferedforthosespecialconditionswheresulfate-reducingbacterialstrainshaveadaptedtoatypicalnon-freshwaterenvironment.1.3Fortheisolationandenumerationofthermophilicsulfate-reducingbacteriaencounteredinwatersassociatedwithoilandgasproduction,allbroths,dilutionblanks,andincubationsmustbemaintainedattemperaturesofatleast45176;Candpreferablywithin5176;Catthesampletemperature.1.4Thesensitivityofthesetestmethodscanbeincreasedbypurgingthedilutionblanksandtubesofmediawithnitrogenimmediatelypriortouse.1.5TheanalystshouldbeawarethatadequatecollaborativedataforprecisionandbiasstatementsasrequiredbyPracticeD2777arenotprovided.SeeSection11fordetails.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:07_100_20(MICROBIOLOGYOFWATER)
【页数】:3P.;A4
【正文语种】:
Product Code:SAE AMS5564
Title:Steel, Corrosion Resistant, Tubing 19Cr - 10Ni (SAE 30304) High-Pressure Hydraulic, Welded Plus Ultrasonically Tested or Seamless Cold Drawn, One Eighth - Hard Temper
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion-resistant steel in the form of welded and drawn or seamless and drawn tubing.