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MIL-HDBK-419A

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MIL-HDBK-419A, MILITARY HANDBOOK GROUNDING, BONDING, AND SHIELDING FOR ELECTRONIC EQUIPMENTS AND FACILITIES (VOL I OF 2 VOLUMES) BASIC THEORY (28 DEC 87). This handbook emphasizes the necessity for including considerations of grounding, bonding, and shielding in all phases of design, construction, operation, and maintenance of electronic equipment and facilities. Volume I, Basic Theory, develops the principles of personnel protection, fault protection, lightning protection, interference reduction, and EMP protection for C-E facilities. In addition, the basic theories of earth connections, signal grounding, electromagnetic shielding, and electrical bonding are presented. The subjects are not covered independently, rather they are considered from the standpoint of how they influence the design of the earth electrode subsystem of a facility, the selection of ground reference networks for equipments and structures, shielding requirements, facility and equipment bonding practices, etc. Volume I also provides the basic background of theory and principles that explain the technical basis for the recommended practices and procedures; illustrates the necessity for care and thoroughness in implementation of grounding, bonding, and shielding, and provides supplemental information to assist in the solution of those problems and situations not specifically addressed. In Volume II, Applications, the principles and theories, including RED/BLACK protection, are reduced to the practical steps and procedures which are to be followed in structural and facility development, electronic engineering, and in equipment development. These applications should assure personnel, equipment and structural safety, minimize electromagnetic interference (EMI) problems in the final operating system; and minimize susceptibility to and generation of undesirable emanations. The emphasis in Volume11 goes beyond development to assembly and construction, to installation and checkout, and to maintenance for long term use.
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【英文标准名称】:StandardSpecificationforChemicalAdmixturesforConcrete
【原文标准名称】:混凝土用化学添加剂的标准规格
【标准号】:ASTMC494/C494M-2010a
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:C09.23
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:加速;化学添加剂;混凝土;物理要求;阻滞;特定性能;测试;减水
【英文主题词】:accelerating;chemicaladmixtures;concrete;physicalrequirements;retarding;specificperformance;testing;waterreducing
【摘要】:1.1Thisspecificationcoversmaterialsforuseaschemicaladmixturestobeaddedtohydraulic-cementconcretemixturesinthefieldforthepurposeorpurposesindicatedfortheeighttypesasfollows:1.1.1TypeA8212;Water-reducingadmixtures,1.1.2TypeB8212;Retardingadmixtures,1.1.3TypeC8212;Acceleratingadmixtures,1.1.4TypeD8212;Water-reducingandretardingadmixtures,1.1.5TypeE8212;Water-reducingandacceleratingadmixtures,1.1.6TypeF8212;Water-reducing,highrangeadmixtures,1.1.7TypeG8212;Water-reducing,highrange,andretardingadmixtures,and1.1.8TypeS8212;Specificperformanceadmixtures.1.2Thisspecificationstipulatestestsofanadmixturewithsuitableconcretingmaterialsasdescribedin11.1-11.3orwithcement,pozzolan,aggregates,andanair-entrainingadmixtureproposedforspecificwork(11.4).Unlessspecifiedotherwisebythepurchaser,thetestsshallbemadeusingconcretingmaterialsasdescribedin11.1-11.3.Note18212;Itisrecommendedthat,wheneverpracticable,testsbemadeusingthecement,pozzolan,aggregates,air-entrainingadmixture,andthemixtureproportions,batchingsequence,andotherphysicalconditionsproposedforthespecificwork(11.4)becausethespecificeffectsproducedbychemicaladmixturesmayvarywiththepropertiesandproportionsoftheotheringredientsoftheconcrete.Forinstance,TypesFandGadmixturesmayexhibitmuchhigherwaterreductioninconcretemixtureshavinghighercementfactorsthanthatlistedin12.1.1.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:10P.;A4
【正文语种】:


【英文标准名称】:Staticweldedsteelcylindricaltanks,seriallyproducedforthestorageofLiquefiedPetroleumGas(LPG)havingavolumenotgreaterthan13mandforinstallationaboveground-Designandmanufacture;GermanversionEN12542:2002+A1:2004
【原文标准名称】:地上设备用储存容量不超过13M的系列生产的液化石油气储存用固定焊接的圆柱形钢罐.设计和制造
【标准号】:DINEN12542-2005
【标准状态】:作废
【国别】:德国
【发布日期】:2005-02
【实施或试行日期】:2005-02-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:上方的;钢筒;槽底;液化气容器;热处理;开口;圆柱形;压缩气体设备;表面处理;容量;固定的;作标记;壁厚;材料变形加工;液化石油气;生产;气体压力容器;压力容器;焊接的;焊接;储存;试验;设计;公差(测量);材料;无损检验;立方含量;定义;规范(验收)
【英文主题词】:Capacity;Compressedgasequipment;Cubicalcontents;Cylindricalshape;Definitions;Design;Gaspressurevessels;Heattreatment;Liquefiedpetroleumgas;Liquidgastank;Marking;Material-deformingprocesses;Materials;Non-destructivetesting;Openings;Overhead;Pressurevessels;Production;Specification(approval);Stationary;Steeldrums;Storage;Surfacetreatment;Tankbottom;Testing;Tolerances(measurement);Wallthicknesses;Welded;Welding
【摘要】:
【中国标准分类号】:E98
【国际标准分类号】:23_020_30
【页数】:55P.;A4
【正文语种】:德语