核燃料后处理厂安全级仪控系统审评关注点探讨

Discussion on the Review Point of Safety Level Instrument Control System for Nuclear Fuel Reprocessing Plant

核燃料后处理作为核燃料循环的重要环节,是关系到我国核能利用是否能够可持续发展的重要组成部分,核燃料后处理仪控系统是设施能够安全连续运行的重要保证,具有监测参数多,控制要求高等特点,其中安全级仪控系统要求其在工厂正常生产运行及设计基准事故工况下均能执行安全功能,因此其安全问题是设计及安全审评的关注重点。但核燃料后处理厂安全级仪控系统有针对性的法规标准较少,对于安全级仪控系统的设置要求还不够明确,缺乏可操作性。本文针对核燃料后处理安全级仪控系统,阐述了安全审评的关注点,提出了审评建议并与设计方达成了一致,有利促进了核燃料后处理设施仪控设计的规范化和优化,同时也为后续类似设施的安全审评及设计优化奠定了基础。

Nuclear fuel reprocessing plays an important role in the cycle of nuclear fuel and concerns the sustainable development of nuclear energy. Instrumentation control system, which has the characteristics of many monitoring parameters and strict control requirements, is of great importance for safe and continuous operation of facilities, especially, the safety class instrumentation control system is required to perform its functions under normal operation and design basic accident conditions. Therefore, its safety issue is the key point of design and safety review. However, as for the safety level instrument system, there are not enough standard and codes which are applicable, and the requirements are not clear and lack of availability. In this article, the focus of safety review was described, review suggestions about instrumentation control system come to an agreement, which optimizes design and provides the foundation for safety operation of facility.