大亚湾核电站失水事故监视系统并机运行探讨

Exploration on Parallel Operation of LOCA Surveillance System in Daya Bay NPP

针对大亚湾核电站失水事故(LOCA)监视系统因部件老化、备件无法采购导致工作不稳定及故障频发的现状,需要对失水事故监视系统进行整体升级改造。为验证新系统的基本功能与性能,且不影响老系统继续正常运行,大亚湾核电站对2号机组实施新、老失水事故监视系统的并机运行。本文通过设计新系统、老系统并机运行方案,并通过并机运行所做的相关功能测试和验证证明新系统的功能与性能已达到并机运行所预期的要求。

LOCA Surveillance System （LSS） in Daya Bay NPP is facing the problems of aging parts, unavailable spare parts leading to unstable work and the frequent failures, and the modification and upgradingof the whole LOCAL system is demanded. To verify the basic function and performance of the new system and at the same time to avoid any effect on the normal operation of the old system, the new and old systems of LSS for Unit 2 are operated in parallel in Daya Bay NPR This paper describes the design solution of the new and old LSS parallel operation, then the required function tests for the parallel operation are conducted to verify the function and performance of the new system. The expected requirement of the parallel operation is satisfied.