秦山核电二期工程主泵与大亚湾核电站主泵的差异及其影响

Differences between Reactor Coolant Pumps Used in Qinshan Phase II NPP Project and Daya Bay NPP

自20世纪70年代以来,美国西屋公司始终在对主泵技术进行改进和开发,使主泵的性能有很大改进。因此,秦山和大亚湾核电站的主泵存在一定差异。秦山核电二期工程主泵通过在日本三菱重工高砂试验台架上进行全流量冷、热态性能试验,以及核电站调试和正式商业运行,已经证明主泵具有良好的机械和水力性能。本文侧重介绍了两种主泵的主要差异。

Much improvement and development has been made for the reactor coolant pumps(RCP) by Westinghouse since 1970s, and the performance of the RCPs is much better than before. There are some differences between the two RCPs for Daya Bay and Qinshan phase II nuclear power plant project.The successful mechanical and hydraulic performance have been demonstrated by the full flow tests under cold and hot conditions conducted in the RCP test facility at the Mitsubishi Heavy Industries in Tagasago, and by the commissioning and commercial operation of Qinshan Phase II. This paper chiefly presents the differences between the two RCPs.