原子能科学技术Issue(9)：1599-1603,5.DOI:10.7538/yzk.2013.47.09.1599
济南微堆退役场址的终态检测
Final Survey of Decommissioning Site for Jinan MNSR
张永保 1李义国 1彭旦 1邹淑芸 1鲁谨 1张金花1
作者信息
- 1. 中国原子能科学研究院 反应堆工程研究设计所,北京,102413
- 折叠
摘要
Abstract
Radioactive levels of 137 Cs ,60 Co ,65 Zn and 90 Sr in decommissioning site of Jinan MNSR were surveyed finally by detecting βandγspectra .65Zn in all samples was not detected .In reactor pool , the highest level of 49.3 Bq/kg of 60 Co exists at pool bottom just below the reactor core ,and is produced by neutron activation .In other survey units ,the highest levels of 5.7 ,6.8 and 8.1 Bq/kg of 137 Cs ,60 Co and 90 Sr exist in transport passage , reactor hall and soil , respectively , and probably come from contamination of decommissioning practice .T he survey results indicate that radioactive levels in all samples are lower than the clearance levels and the acceptable levels derived from the effective dose of 10 μSv/a , and that in most of samples are close to the background levels .The detection lower limits of 137Cs ,60Co and 65Zn are 1.1 ,1.0 and 1.3 Bq/kg , respectively . T he uncertainty of survey results is less than 33.0% . T he relative deviation between the measured value and the certified value of standard material GBW08304a is less than 3% .关键词
济南微堆/退役/终态检测Key words
Jinan M NSR/decommissioning/final survey分类
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张永保,李义国,彭旦,邹淑芸,鲁谨,张金花..济南微堆退役场址的终态检测[J].原子能科学技术,2013,(9):1599-1603,5.
