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首页> 外文期刊>Journal of Environmental Radioactivity >The use of portable equipment for the activity concentration index determination of building materials: method validation and survey of building materials on the Belgian market
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The use of portable equipment for the activity concentration index determination of building materials: method validation and survey of building materials on the Belgian market

机译：使用便携式设备确定建筑材料的活动浓度指数：比利时市场上建筑材料的方法验证和调查

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摘要

The Euratom BSS requires that in the near future (2015) the building materials for application in dwellings or buildings such as offices or workshops are screened for NORM nuclides. The screening tool is the activity concentration index (ACI). Therefore it is expected that a large number of building materials will be screened for NORM and thus require ACI determination. Nowadays, the proposed standard for determination of building material ACI is a laboratory analyses technique with high purity germanium spectrometry and 21 days equilibrium delay. In this paper, the B-NORM method for determination of building material ACI is assessed as a faster method that can be performed on-site, alternative to the aforementioned standard method. The B-NORM method utilizes a LaBr_3(Ce) scintillation probe to obtain the spectral data. Commercially available software was applied to comprehensively take into account the factors determining the counting efficiency. The ACI was determined by interpreting the gamma spectrum from ~(226)Ra and its progeny; ~(232)Th progeny and ~(40)K. In order to assess the accuracy of the B-NORM method, a large selection of samples was analyzed by a certified laboratory and the results were compared with the B-NORM results. The results obtained with the B-NORM method were in good correlation with the results obtained by the certified laboratory, indicating that the B-NORM method is an appropriate screening method to assess building material ACI. The B-NORM method was applied to analyze more than 120 building materials on the Belgian market. No building materials that exceed the proposed reference level of 1 mSv/year were encountered.
机译：Euratom BSS要求在不久的将来（2015年）对用于住宅或建筑物（例如办公室或车间）的建筑材料进行NORM核素筛选。筛选工具是活动浓度指数（ACI）。因此，预计将针对NORM筛选大量建筑材料，因此需要确定ACI。如今，拟议的建筑材料ACI测定标准是一种具有高纯度锗光谱法和21天平衡延迟的实验室分析技术。在本文中，B-NORM方法用于建筑材料ACI的测定是一种可以在现场执行的快速方法，是上述标准方法的替代方法。 B-NORM方法利用LaBr_3（Ce）闪烁探针获得光谱数据。应用可商购的软件来全面考虑确定计数效率的因素。通过解释〜（226）Ra及其后代的γ谱来确定ACI。 〜（232）Th后代和〜（40）K。为了评估B-NORM方法的准确性，认证实验室对大量样品进行了分析，并将结果与​​B-NORM结果进行了比较。用B-NORM方法获得的结果与通过认证的实验室获得的结果高度相关，这表明B-NORM方法是评估建筑材料ACI的合适筛选方法。 B-NORM方法用于分析比利时市场上的120多种建筑材料。没有遇到超过建议的参考水平1 mSv /年的建筑材料。

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  • 来源
    《Journal of Environmental Radioactivity》 |2014年第1期|56-63|共8页
  • 作者

    M. Stals; S. Verhoeven; M. Bruggeman; V. Pellens; W. Schroeyers; S. Schreurs;

  • 作者单位

    NuTeC (Nuclear Technological Centre), Wetenschapspark 27, 3590 Diepenbeek, Belgium,Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium;

    NuTeC (Nuclear Technological Centre), Wetenschapspark 27, 3590 Diepenbeek, Belgium;

    Nuclear Research Centre SCK CEN, Laboratory of gamma spectrometry, Boeretang 200, 2400 Mol, Belgium;

    NuTeC (Nuclear Technological Centre), Wetenschapspark 27, 3590 Diepenbeek, Belgium,Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium;

    NuTeC (Nuclear Technological Centre), Wetenschapspark 27, 3590 Diepenbeek, Belgium,Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium;

    NuTeC (Nuclear Technological Centre), Wetenschapspark 27, 3590 Diepenbeek, Belgium,Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Building materials; NORM; Euratom Basic Safety Standards; Activity concentration; Measurement;

    机译：建筑材料;规范;Euratom基本安全标准;活性浓度;测量;

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