【英文标准名称】:Fixedrailwayequipment.Materialfortelecommunicationandsignalingoverheadlines.Galvanizedroundheadbolts.
【原文标准名称】:铁路固定设备.通讯和信号装置架空线路用器材.镀锌圆头螺栓
【标准号】:NFF56-122-1984
【标准状态】:作废
【国别】:法国
【发布日期】:1984-02-01
【实施或试行日期】:1984-02-16
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:规范;尺寸公差;尺寸;表(数据);名称与符号名称与符号;有眼螺钉;有眼紧固件;抗拉强度;检验荷载;紧固件;松紧螺纹扣;螺钉
【英文主题词】:
【摘要】:
【中国标准分类号】:S61;S73
【国际标准分类号】:45_080
【页数】:2P.;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodforWaterandSedimentinMiddleDistillateFuelsbyCentrifuge
【原文标准名称】:用离心法测定中间馏出燃料中水和沉淀物的试验方法
【标准号】:ASTMD2709-1996(2006)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D02.14
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:离心机;蒸馏;燃料;沉积物;试验;水
【英文主题词】:centrifuge;centrifugetube;distillatefuel;waterandsediment
【摘要】:ThistestmethodisusedasanindicationofwaterandsedimentinmiddledistillatefuelssuchasGradeNos.1and2fueloil(SpecificationD396),Nos.1-Dand2-Ddieselfuel(SpecificationD975),andNos.0-GT,1-GT,and2-GTgasturbinefuels(SpecificationD2880).Appreciableamountsofwaterandsedimentinafueloiltendtocausefoulingofthefuel-handlingfacilitiesandtogivetroubleinthefuelsystemofaburnerorengine.Anaccumulationofsedimentinstoragetanksandonfilterscreenscanobstructtheflowofoilfromthetanktothecombustor.Waterinmiddledistillatefuelscancausecorrosionoftanksandequipment,andifdetergentispresent,thewatercancauseemulsionsorahazyappearance.Waterisnecessarytosupportmicrobiologicalgrowthatfuelwater-interfacesinfuelsystems.1.1Thistestmethodcoversthedeterminationofthevolumeoffreewaterandsedimentinmiddledistillatefuelshavingviscositiesat40176;C(104176;F)intherangeof1.0to4.1mm178;/s(1.0to4.1cSt)anddensitiesintherangeof770to900kg/m179;.Note18212;FuelscorrespondingtoSpecificationD975Grades1Dand2D,SpecificationD2880Grades0-GT,1-GTand2-GT,andSpecificationD3699Grades1-Kand2-Kwillusuallyfallinthisviscosityanddensityrange.TestMethodD1796isintendedforhigherviscosityfueloils.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:3P.;A4
【正文语种】: