【英文标准名称】:StandardPracticeforDeterminingEquivalentBoronContentsofNuclearMaterials
【原文标准名称】:核材料中当量硼含量测定的标准实施规范
【标准号】:ASTMC1233-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:C26.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:核材料;硼;原子核的;材料
【英文主题词】:boron;neutronabsorption;nuclearmaterials;nuclearpoisons
【摘要】:1.1ThisstandarddetailsarecommendedpracticeforthecalculationoftheEquivalentBoronContent(EBC)valuesforelementsthatareofpotentialsignificanceasthermalneutronpoisons.Thevaluesaredeterminedfromaknowledgeoftheatomicweightofelementsandthethermalneutronabsorptioncrosssectioninbarns.ThispracticeisillustratedbyusingtheEBCfactorsofTable1whicharebasedonthermalneutron(2200m/s)absorptioncrosssections.OtherEBCfactorsmaybeuseddependingupontheactualneutronenergycharacteristicsoftheapplicablereactorsystem.1.2ThefollowingelementsdonotrequiretobeincludedintheEBCcalculations,astheirEBCfactorsarelessthanorequalto0.0001:aluminum;fluorine;rubidium;barium;lead;silicon;beryllium;neon;tin;bismuth;oxygen;zirconium;carbon;magnesium;cerium;phosphorus.Theircontributiontothetotalpoisoneffectisnotconsideredsignificant.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:3P.;A4
【正文语种】: