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首页> 外文会议>International Conference on Environmental Remediation and Radioactive Waste Management >A STUDY ON THE REPRESENTATIVE SAMPLING SURVEY FOR THE INSPECTION OF THE CLEARANCE LEVEL FOR THE RADIOISOTOPE WASTE
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A STUDY ON THE REPRESENTATIVE SAMPLING SURVEY FOR THE INSPECTION OF THE CLEARANCE LEVEL FOR THE RADIOISOTOPE WASTE

机译：用于检测放射性同位素浪费的清关水平的代表性抽样调查研究

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Utilization facilities for radioisotope (RI) are increasing annually in South Korea, and the total number was 2,723, as of December 31, 2005. The inspection of a clearance level is a very important problem in order to ensure a social reliance for releasing radioactive materials to the environment. Korean regulations for such a clearance are described in Notice No. 2001-30 of the Ministry of Science and Technology (MOST) and Notice No. 2002-67 of the Ministry of Commerce, Industry and Energy (MOCIE). Most unsealed sources in RI waste drums at a storage facility are low-level beta-emitters with short half-lives, so it is impossible to measure their inventories by a nondestructive analysis. Furthermore, RI wastes generated from hospital, educational and research institutes and industry have a heterogeneous, multiple, irregular, and a small quantity of a waste stream. This study addresses a representative (master) sampling survey and analysis plan for RI wastes because a complete enumeration of waste drums is impossible and not desirable in terms of a cost and efficiency. The existing approaches to a representative sampling include a judgmental, simple random, stratified random, systematic grid, systematic random, composite, and adaptive sampling. A representative sampling plan may combine two or more of the above sampling approaches depending on the type and distribution of a waste stream. Stratified random sampling (constrained randomization) is proven to be adequate for a sampling design of a RI waste regarding a half-life, surface dose, undertaking time to a storage facility, and type of waste. The developed sampling protocol includes estimating the number of drums within a waste stream, estimating the number of samples, and a confirmation of the required number of samples. The statistical process control for a quality assurance plan includes control charts and an upper control limit (UCL) of 95% to determine whether a clearance level is met or not.
机译：韩国每年每年增加房地盆（RI）的利用设施，截至2005年12月31日，总数为2,723.清关水平的检查是一个非常重要的问题，以确保释放放射性物质的社交依赖性到环境。朝鲜法规进行此类清关的公告，文科部（MOST）的第2001-30号公告说明，通知商务部2002-67号公告（MOCIE）。在储存设施的RI废话鼓中的大多数未密封的来源都是低级别的β发射器，具有短的半衰期，因此无法通过非破坏性分析来测量其库存。此外，从医院，教育和研究机构和工业中产生的RI废物具有异质，多重，不规则，少量的废物流。本研究解决了RI废物的代表性（硕士）采样调查和分析计划，因为在成本和效率方面是不可能的，不可取的废鼓的完整枚举。代表性采样的现有方法包括判断性，简单随机，分层随机，系统网格，系统随机，复合和自适应采样。代表性采样计划可以根据废物流的类型和分布来组合上述两种或更多种以上采样方法。已经证明，分层随机采样（约束随机化）是足以用于对半衰期，表面剂量，承担存储设施的时间和废物类型的RI废物的采样设计。开发的采样方案包括估计废物流内的鼓数，估计样品的数量，以及确认所需数量的样品。质量保证计划的统计过程控制包括控制图和95％的上控制限制（UCL），以确定是否满足间隙水平。

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