核化学与放射化学2025，Vol.47Issue(3)：242-248,7.DOI:10.7538/hhx.2025.47.03.0242
基于ORIGEN程序的后处理尾气氙同位素关联乏燃料燃耗技术
Reprocessing Exhaust Gas Xenon Isotope Correlation Spent Fuel Burn-Up Based on ORIGEN Code
黄声慧 1徐常昆 1单浩栋 1陈彦 1李力力 1赵永刚1
作者信息
- 1. 中国原子能科学研究院放射化学研究所,北京 102413
- 折叠
摘要
Abstract
Environmental sampling analysis technology is one of the safeguards measures used by International Atomic Energy Agency to detect undeclared nuclear materials and nuclear activities.Noble gas isotope correlations technique is of great significance in nuclear safeguards supervision and monitoring of large-scale reprocessing facilities,which is far from the reprocessing process and less invasive.This study focuses on the measurement needs of spent fuel burn-up during the chopping and dissolution processes of the spent fuel,and conducted research on stable xenon isotope correlation spent fuel burn-up technique.The spent fuel of 101 Heavy Water Research Reactors and Daya Bay Pressurized Water Reactors was taken as the research object.Physical calculations of burn-up and quantity of fission products were carried out through ORIGEN2 code.Based on the nuclear safeguards supervision and verification scenario,a stable xenon isotope correlation model for quantity of fission products and spent fuel burn-up is established,and linear fitting relationships between spent fuel burn-up in 101 Heavy Water Research Reactors and Daya Bay Pressurized Water Reactors and 131Xe/134Xe,132Xe/134Xe isotopes ratio are obtained.The xenon were obtained by xenon sampling from stack gases during chopping and dissolution of spent fuel through low temperature activated carbon sampling method,and the measurement of xenon isotope ratio by high resolution gas mass spectrometer measurement in the actual reprocessing process are used to calculate the burn-up.The results of 101 Heavy Water Research Reactors and Daya Bay Pressurized Water Reactors both show that the relative deviation between the spent fuel burn-up value which inferred by linear fitting based on 132Xe/134Xe isotope ratio and the burn-up reference value is within 6％relatively,which verifies the effectiveness and practicality of the correlation model.Prospects were given for the practical application of this technology in nuclear safeguards verification and detecting.关键词
后处理/保障/氙/堆物理计算Key words
reprocessing/safeguards/xenon/reactor physics calculation分类
核科学引用本文复制引用
黄声慧,徐常昆,单浩栋,陈彦,李力力,赵永刚..基于ORIGEN程序的后处理尾气氙同位素关联乏燃料燃耗技术[J].核化学与放射化学,2025,47(3):242-248,7.
