济南微型中子源反应堆退役的放射性核素调查

Radionuclide Survey for Jinan Miniature Neutron Source Reactor Decommissioning

摘要: 对济南微堆反应堆容器上筒节、水池材料、水净化树脂及废物现场取样进行放射性核素调查，并详细介绍了对水池材料的调查。被调查的材料中放射性核素主要包括⁶⁰Co、¹⁵²Eu、¹³⁷Cs和⁵⁴Mn，反应堆容器正下方的池底材料中放射性核素活度浓度较高。调查结果表明：反应堆容器上筒节、堆水净化树脂及废物均为低放废物，部分水池材料也应作为低放废物进行剥离。调查采用标准物质GBW08304a进行质量控制，测量值与标准值在±15%内一致。

Abstract: Radionuclides in upper reactor container, pool materials, resin and waste were surveyed on the decommissioning site of Jinan Miniature Neutron Source Reactor, and the survey of pool materials was described in detail. The radionuclides in surveyed materials include ⁶⁰Co, ¹⁵²Eu, ¹³⁷Cs and ⁵⁴Mn with higher activity concentrations in materials at pool bottom just below the reactor container. The survey results indicate that upper reactor container, resin for reactor water purification, waste and a part of pool materials are low level waste. A certified reference material GBW08304a was used in this survey for quality control. The measured values agree well with the standard values within ±15%.