Statistical sampling method to verify the homogeneity of full-scale cement-solidified radioactive waste

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2024-08-13 DOI:10.1016/j.net.2024.08.020

Hyeongjin Byeon, Ugyu Jeong, Jaeyeong Park

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Abstract

Homogeneity is an important factor for ensuring the structural stability of solidified radioactive waste, and the most effective approach for assessing its homogeneity is by performing compressive strength measurements using the minimum amount of coring specimens. The efficiency of detecting inhomogeneous waste is affected by the coring position and number of coring positions. However, no guidelines exist for coring solidified waste for compressive-strength tests. Therefore, this study compared uniform, random, and quasi-Monte Carlo sampling methods to determine the most effective core position. Further, the effects of different sampling amounts on the detection rate of inhomogeneous solidified waste were observed, and the detection rate of the inhomogeneous waste was obtained by modeling the coring procedure of solidified radioactive waste using MATLAB. Thus, a sampling method and a method for increasing the specimen amount, both of which can efficiently detect inhomogeneous waste during compressive strength tests, were presented in this paper. The results of this study can be applied as background data for developing homogeneity assessment guidelines for solidified radioactive waste.

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验证全尺寸水泥固化放射性废物均匀性的统计取样方法

均匀性是确保固化放射性废物结构稳定性的一个重要因素，评估其均匀性的最有效方法是使用最少的取芯试样进行抗压强度测量。检测不均匀废料的效率受到取芯位置和取芯数量的影响。然而，目前还没有关于在压缩强度测试中对固化废物取芯的指南。因此，本研究比较了均匀、随机和准蒙特卡洛取样方法，以确定最有效的取芯位置。此外，还观察了不同取样量对非均质固化废物检测率的影响，并通过使用 MATLAB 对固化放射性废物取芯过程进行建模，得出了非均质废物的检测率。因此，本文提出了一种取样方法和一种增加试样量的方法，这两种方法都能在抗压强度试验中有效地检测出不均匀废物。本研究的结果可作为制定固化放射性废物均匀性评估准则的背景数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development

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