ISO 12795-2004 核燃料技术.二氧化铀粉末和小球.带杂质修正的重量分析法测定铀和氧/铀比率

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【英文标准名称】:Nuclearfueltechnology-Uraniumdioxidepowderandpellets-Determinationofuraniumandoxygen/uraniumratiobygravimetricmethodwithimpuritycorrection
【原文标准名称】:核燃料技术.二氧化铀粉末和小球.带杂质修正的重量分析法测定铀和氧/铀比率
【标准号】:ISO12795-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC85
【标准类型】:()
【标准水平】:()
【中文主题词】:粉末;核燃料;核技术;丸状二氧化铀;二氧化铀;燃料;重量分析的;修正;放射性物质;测定;能源技术;杂质;抽样方法
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiesamethodofdeterminingthemassfractionofuraniumandtheoxygen-to-uraniumatomicratioinhyperstoichiometricuraniumdioxide(UO2+X)powdersandpellets.ThisInternationalStandardisusedforthedeterminationoftheUmassfractionandtheO/U-ratioofnucleargradeuraniumdioxide.Theprecisionandaccuracystatedin8.2arevalid,ifthetotalamountofimpuritiesinthesampledoesnotexceedthefiguresgivenin8.2.AnimpuritycorrectionintheUmassfractionandtheO/U-ratiodeterminationshouldbeperformed,iftheamountoftotalimpuritiesinoxideformexceeds1500μgpergramofsample.LowerimpuritylevelsinfluencetheO/U-ratiobylessthan0,0005andcanbeneglected.Thenon-volatileimpuritiesshallbedeterminedbyanappropriatetechnique,andthecorrectionapplied.Ifthetotalcontentofthenon-volatileimpuritiesinoxideformisgreaterthan1500μgpergramofsample,theoverallprecisionofthemethoddependsontheaccuracyoftheseimpuritymeasurements.Ifnoimpuritycorrectionismadeandiftheenrichmentofthesampleisnotconsideredasdescribedin8.11,theprecisionandaccuracyfigureswillbepoorerthanin8.2.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:7P;A4
【正文语种】:英语