Cleaning up of a nuclear facility: Destocking of Pu radioactive waste and nuclear Non-Destructive Assays

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• 作者：F. Jallu^a ; ^{fanny.jallu@cea.fr} ; P.-G. Allinei^a ; Ph. Bernard^a ; J. Loridon^a ; D. Pouyat^b ; L. Torreblanca^c
• 关键词：Waste ; Passive measurement ; Neutron ; Non destructive assay ; Plutonium
• 刊名：Nuclear Instruments and Methods in Physics Research Section B ; Beam Interactions with Materials and Atoms
• 出版年：2012
• 期刊代码：42_0168583x
• 类别：ph
• 出版时间：15 July, 2012
• 卷：283
• 期：Complete
• 页码：15-23
• 文件大小：1381 K

摘要

In view to clean up a nuclear facility located at the CEA, Cadarache, France, three Non Destructive Assay (NDA) methods have been combined to characterize 2714 old, 100 L radioactive waste drums produced between 1980 and 1997. The results of X-ray radiography, passive neutron measurement and gamma-ray spectrometry are used together to extract both the 尾纬 and 伪 activities, and the Pu mass contained in each drum. Those drums will then be re-conditioned and cemented in 870 L containers, in order to be sent to the adequate disposal or interim storage.

This paper presents the principle of the three NDA methods, the dedicated measurement setups, and it gives details about the setups, which have been especially designed and developed for that application. Uncertainties are dealt with in the last part of the paper.