某核电厂除盐水加氨系统改造设计及风险评估

Modification design and risk assessment of desalted water ammonia adding system in a nuclear power plant

结合某工程实例,对核电厂除盐水加氨系统的改造设计进行分析,并对完成改造后的加氨系统进行风险评估。经过评估,改造后的加氨系统安全性明显提高,只有在多种安全措施同时发生故障时,才会产生室内爆炸性气体。该加氨系统的改造设计技术可行,可为其他工程提供参考。

The modification design of desalted water ammonia adding system in nuclear power plant is analyzed based on an engineering example, and the risk assessment of modified ammonia adding system is carried out. According to evaluation, the safety of the reformed ammonia adding system is obviously better than that of the unmodified system. Only extreme conditions such as simultaneous failure of various safety measures can generate the indoor explosive atmosphere after the modification. The modification design of the ammonia adding system is technically feasible and safe, and it is a successful design case.