目的 乏燃料干法贮存是解决秦二厂水池满容问题,保障机组正常运行的有效途径。为此开展乏燃料干法贮存系统及设备设计。方法 本文通过分析乏燃料干法贮存系统法规要求和用户接口要求,提出设备设计的具体要求,并进行乏燃料干法贮存系统关键设备设计。乏燃料干法贮存系统设置独立的密封贮存罐、转运容器和水平贮存模块。在密封贮存罐中设计乏燃料次临界控制、包容结构,转运容器设置转运过程中的辐射防护和传热结构,水平贮存模块设置贮存期间的辐射防护和传热结构。结果 通过正常、异常和事故工况下的设备安全分析与计算,论证了乏燃料干法贮存系统转运操作和贮存过程中的各环节满足设备设计要求。结论 该设计为我国乏燃料干法贮存提供了切实可用的借鉴。
Abstract
Dry storage of spent fuel is an effective approach to address the issue of full capacity in the Qinshan Phase II pool, ensuring the normal operation of the units. Therefore, the work aims to design dry storage systems and equipment for spent fuel. By analyzing the regulatory requirements and user interface requirements for dry storage systems of spent fuel, specific equipment design requirements were proposed, and key components for dry storage systems of spent fuel were designed. The spent fuel dry storage system was equipped with independent dry storage canisters, transfer casks, and horizontal storage modules. In the dry storage canister, subcritical control and containment structures were designed for spent fuel. The transfer cask was set up with radiation protection and heat transfer structures during the transfer process. The horizontal storage module was provided with radiation protection and heat transfer structures during the storage period. Through equipment safety analysis and calculation under normal, abnormal, and accident conditions, it was demonstrated that all stages of the transfer operation and storage process of the dry storage system for spent fuel met the equipment design requirements. This design provides a practical and applicable reference for dry storage of spent fuel in China.
关键词
干法贮存 /
乏燃料组件 /
系统设备
Key words
dry storage /
spent fuel assembly /
system equipment
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