关键词: 核电机组, CPR1000, 安全注入系统, 安全壳喷淋系统, 泵

Abstract: The Yangjiang Nuclear Power Project undertakes the mission of equipment localization and has the highest equipment localization rate. The debugging of RIS/EAS pumps and motors is a most tough issue. The EAS/RIS system is important not only for the project proceeding nodes, such as nuclear circuit cleaning (NCC) and cold functional test with reactor vessel open (CFTRVO), but also for the cold functional test(CFT), hot functional test(HFT) and pre-criticality test(PCT). The key of the nuclear safety is that the EAS/RIS pumps and motors should meet the related nuclear safety standards. However, as the first such project that adopts China-made pumps and motors, some problems exist in the Yangjiang project, such as insufficient water head, bad airproof, burrs in hydraulic parts and high vibrations. Along with the debugging progressing, the completion of the dome and pits of the reactor room has been making it difficult to solve these problems. Therefore, the open vessel CFT is optimized so that the performance of EAS/RIS pumps is verified successfully before the completion. The optimization, which can ensure the nuclear safety, has saved the costs substantially and can provide reference for the debugging of other systems.

Key words: nuclear power unit, CPR1000, RIS, EAS, pump