核电站废树脂清洁解控监测实践

A practice case of monitoring waste resin clearance in a nuclear power plant

目的 建立一套核电站废树脂清洁解控监测流程,满足解控要求并简化监测工作。方法 依据我国现行的法律法规、标准相关要求和核电站运行过程中产生的轻微污染废树脂运行实践,为准确监测待解控废树脂的放射性核素活度水平,针对取样方法、样品均匀性和代表性检验、放射性监测内容与方法及监测简化流程等进行较深入的探讨。结果 建立一套流程完成核电站废树脂的清洁解控监测,解控了满足要求的55桶废树脂。结论 良好的清洁解控流程实现树脂取样的代表性,提高监测数据的准确性,既能区分放射性废物和解控废物,同时可简化监测流程,为今后的废树脂解控工作提供依据和参考。

Objective To establishment a process of monitoring waste resin clearance in nuclear power plants,and to meet clearance requirements and simplify the monitoring work.Methods In accordance with the requirements specified in current laws,regulations,and standards in China,as well as the practice of slightly polluted waste resins generated during the operation of nuclear power plants,in-depth discussion was conducted on sampling methods,sample uniformity and representativeness tests,radiation monitoring contents and methods,and simplified monitoring processes,in order to accurately monitor the radionuclide activity of waste resins to be cleared.Results A process was established to monitor waste resin clearance in nuclear power plants.A total of 55 barrels of waste resins were cleared and the radiation levels met the requirements.Conclusion An effective clearance process can facilitate the sampling of representative resins,improve the accuracy of monitoring data,differentiate radioactive waste from cleared waste,and simplify the monitoring process.Our results provide a basis and reference for future waste resin clearance.