多用途一体化轻水堆初步设计方案和安全分析

为满足未来区域性核能供电、核供热、大规模制氢、海水淡化等需求,迫切需要一种结构简单、固有安全性高、经济性高的多用途反应堆.基于此,一种多用途的一体化轻水堆设计概念被提出,包括不同设备的初步设计方案和参数;根据其特点,利用最佳估算程序RELAP5对其中一个设计方案进行了稳压器汽腔破口事故和主泵断电引起的丧失流量事故的确定论安全分析.结果表明,在保守假设条件下,其固有特性和安全系统仍能保证堆芯始终处于被淹没状态,非能动余热排出系统可有效导出停堆后的长期衰变热,从而为进一步研究一体化轻水堆的设计和运行安全特性打下了基础.

Primary Design and Safety Analysis of Multi-application Integrated Light Water Reactor

The simple, high inherent safety and economy multi-application reactors are necessary to fulfill the future requirements of the small nuclear power supply, nuclear heating supply, hydrogen production, seawater desalinization, and so on. A multi-application integrated light water reactor was proposed, including primary design characteristics and parameters. The safety analysis was calculated using the RELAP5 code, which focused on the loss of coolant accident (LOCA) and loss of flow accident (LOFA). The results show that the inherent characteristic and safety system can ascertain the reactor being under the coolant water on the conservative assumption. The passive residual heat removing system can remove the decay heat effectively. It is the foundation for the further development.