运行技术规范中的一回路压力定值

Primary Pressure Setting in Operation Technical Specification

国内某核电厂运行技术规范规定反应堆功率运行模式下"一回路系统压力维持在155±1 bar. a",但反应堆冷却剂系统正常压力调节可能导致一回路压力超出此范围。文中对一回路压力的调节原理进行了分析,列举了相关文件的技术要求,回顾了运行技术规范的发展历史,最终说明运行技术规范的内容不适当。最后,给出了运行技术规范关于一回路压力管理的建议。

The operation technical specification of a nuclear power plant in China prescribes "The pressure of the primary loop system is maintained at 155± 1 bar. a" in reactor power operation mode. However,the normal pressure regulation of the reactor coolant system may cause the primary pressure to exceed this range. This paper analyzes the regulation principle of primary pressure, lists the technical requirements of the relevant documents, reviews the development history of operation technical specification, indicates that the content of the operation technical specification is inadequate. Finally,the management suggestion of the operation technical specification about the primary pressure is given.