Analysis of Natural Circulation and Creep Damage under Station Blackout Severe Accidents

Xiang Qingan; Deng Chunrui; Chen Baowen; Feng Jinjun

doi:10.13832/j.jnpe.2014.05.0017

Volume 35 Issue 5

Feb. 2025

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Xiang Qingan, Deng Chunrui, Chen Baowen, Feng Jinjun. Analysis of Natural Circulation and Creep Damage under Station Blackout Severe Accidents[J]. Nuclear Power Engineering, 2014, 35(5): 17-21. doi: 10.13832/j.jnpe.2014.05.0017

Citation:

Xiang Qingan, Deng Chunrui, Chen Baowen, Feng Jinjun. Analysis of Natural Circulation and Creep Damage under Station Blackout Severe Accidents[J]. Nuclear Power Engineering, 2014, 35(5): 17-21. doi: 10.13832/j.jnpe.2014.05.0017

Citation:

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Analysis of Natural Circulation and Creep Damage under Station Blackout Severe Accidents

doi: 10.13832/j.jnpe.2014.05.0017

1. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China;
2. Nuclear and Radiation Safety Center, Ministry of Environment Protection of P. R. China, Beijing, 100082, China

Received Date: 2013-09-04
Rev Recd Date: 2014-08-20

Available Online: 2025-02-15

Abstract

Abstract

The natural circulation model of ACP1000 Nuclear Power Plant is built using MELCOR 2.1. This paper analyzes the natural circulation phenomena in the hot leg and steam generator tube by selecting TMLB’ accident, and uses the cumulative creep damage to determine the relative creep-rupture timing in the reactor coolant pressure boundary components. The results showed that RPV outer pipe would be failed earlier than the flawed steam generator hottest tube.
- Natural circulation,
- Creep rupture,
- TMLB’ accident,
- MELCOR 2.1 code