A REVIEW OF FAILURE MODELS OF NUCLEAR POWER KEY EQUIPMENT AND COMPONENTS ASSEMBLY

摘要

Nuclear power is now the urgent need for the development of economy in the world. It was reported that the nuclear power installed capacity of China will develop from 6.1GW in 2002 to 40GW in 2020. During the development of nuclear power industry, the problem perplexing people all the time is the safety of operating nuclear power plant(NPP). And the research regarding damage and failure models is pivotal for the safety of operating NPP. This paper reviews the failure models of nuclear power key equipment and components assembly, such as reactor pressure vessel(RPV), steam generator(SG) etc. The failure models of RPV mainly include irradiation embrittlement, stress corrosion cracking(SCC), and for SG mainly include inner-diameter SCC(IDSCC), outer-diameter SCC(ODSCC) etc. Besides, fatigue, wear and fretting damage are also common failure models in NPP.