基本信息
| 标准名称： | 电力系统污区分布图绘制方法 |
| 发布部门： | 国家能源局 |
| 发布日期： | 2010-05-01 |
| 实施日期： | 2010-10-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国电力出版社 |
| 出版日期： | 2010-10-01 |
| 书号： | 155123.130 |
适用范围
本标准适用于1000V及以上架空输电线路、发电厂、变电站或换流站电力设备外绝缘设计或运行维护时用污区分布图的绘制。
前言
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目录
1 范围
2 规范性引用文件
3 术语和定义
4 现场污秽度等级的划分
5 污区分布图绘制
6 电气污区分布图的绘制
7 修订和审批
附录
引用标准
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所属分类： 机械 活塞式内燃机与其他动力设备 锅炉及其辅助设备 能源和热传导工程 电站综合
【英文标准名称】:StandardSpecificationforSpecialEngineeredFittings,AppurtenancesorValvesforuseinPoly(VinylChloride)(PVC)orChlorinatedPoly(VinylChloride)(CPVC)Systems
【原文标准名称】:聚氯乙烯(PVC)或氯化聚氯乙烯(CPVC)系统中使用的专用工程配件、附件或阀门的标准规范
【标准号】:ASTMF1970-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:F17.10
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:公用事业设备;活接头;阀门;止回阀;CPVC;饮用水设备;弹性体;聚氯乙烯;法兰;配件;材料试验
【英文主题词】:appurtenances;checkvalves;CPVC;elastomericjoints;elastomers;fittings;flanges;PVC;SE;special-engineered;unions;valves
【摘要】:1.1Thisspecificationcoversfittings,appurtenancesandvalveswhicharetobeusedwithpipeandtubingcomplyingwithSpecificationsD1785,D2241,D2846,F441orF442,orotherpipingasspecifiedbythefittingsmanufacturer.Theseproducts,suchasunions,flangesorvalves,arenotincludedinthescopeofexistingASTMspecifications.Thisspecificationincludesminimumrequirementsfortesting,materials,dimensions,workmanship,marking,andin-plantqualitycontrol.1.2Fittingsorappurtenancescoveredbythisspecificationaregenerallyeithermolded,fabricated,orassembledfrommoldedormachinedcomponents.Thematerialsusedincomponentsincluderigidthermoplastics,thermoplasticelastomers,elastomerics,andmetals.Thebodyormainportionofthefitting,appurtenanceorvalveistypicallyPVC,CPVC,PEorPA(nylon).AllproductscoveredbythisstandardareintendedtobeusedinPVCorCPVCplasticpipingsystems,orasatransitionfromthesetometalsystems.1.3Theapplicationoftheseproductstogasserviceisbeyondthescopeofthisspecification.1.4Theproductscoveredbythisspecificationareintendedforusewiththedistributionofpressurizedliquidsonly,whicharechemicallycompatiblewiththepipingmaterials.Duetoinherenthazardsassociatedwithtestingcomponentsandsystemswithcompressedairorothercompressedgasessomemanufacturersdonotallowpneumatictestingoftheirproducts.Consultwithspecificproduct/componentmanufacturersfortheirspecifictestingprocedurespriortopneumatictesting.Note18212;Warning:Pressurized(compressed)airorothercompressedgasescontainlargeamountsofstoredenergywhichpresentserioussafetywhichpresentserioussafetyhazardsshouldasystemfailforanyreason.1.5Fittingswhichrelyonheatfusionweldingforconnectiontothepipingsystemareoutsidethescopeofthisspecification.1.6Checkvalves(includingfootvalves)coveredbythisspecificationshallnotbeconsideredbackflowpreventiondevicesandshallnotbeusedfortheprotectionofapotablewatersupply.Fordefinitionsandrequirementsofbackflowpreventiondevices,consultmodelplumbingcodesandASSE.1.7Duetothecomplexandinstallation-specificconcernssurroundingchemicalresistanceandcorrosion,thisspecificationdoesnotaddressthecompatibilityoftheproductswithallpossibleend-useenvironments.Additionaltestingspecifictotheend-useenvironmentisrecommendedifthesystemisconveyingliquidsotherthanpotablewater.1.8Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIunitsgiveninparenthesesaregivenforinformationonly.1.9Thefollowingsafetycaveatappliesonlytothetestmethodsandin-plantqualitycontrolportions,sectionofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G33
【国际标准分类号】:83_140_30
【页数】:6P.;A4
【正文语种】: