Study on Core Melting Accident Induced by One Stuck-Open Pressurizer Safety Valve

WU Peng; YANG Yan-hua; LIN Meng

Volume 29 Issue 4

Aug. 2008

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WU Peng, YANG Yan-hua, LIN Meng. Study on Core Melting Accident Induced by One Stuck-Open Pressurizer Safety Valve[J]. Nuclear Power Engineering, 2008, 29(4): 112-116.

Citation:

WU Peng, YANG Yan-hua, LIN Meng. Study on Core Melting Accident Induced by One Stuck-Open Pressurizer Safety Valve[J]. Nuclear Power Engineering, 2008, 29(4): 112-116.

WU Peng, YANG Yan-hua, LIN Meng. Study on Core Melting Accident Induced by One Stuck-Open Pressurizer Safety Valve[J]. Nuclear Power Engineering, 2008, 29(4): 112-116.

Citation:

WU Peng, YANG Yan-hua, LIN Meng. Study on Core Melting Accident Induced by One Stuck-Open Pressurizer Safety Valve[J]. Nuclear Power Engineering, 2008, 29(4): 112-116.

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Study on Core Melting Accident Induced by One Stuck-Open Pressurizer Safety Valve

School of Nuclear Science and Engineering, Shanghai Jiao Tong University, 200240, China

Received Date: 2007-05-30
Rev Recd Date: 2008-03-20

Available Online: 2025-07-22

Publish Date: 2008-08-15

Abstract

Abstract

The core melting accident in DaYa Bay NPP, induced by the total loss of feedwater accident with one stuck-open pressurizer safety valve, is analyzed by using SCDAP/RELAP5 computer code. The analytical results of this base case indicate that it leads to core melting, and has the potential probability of high pressure core melting risk. At the same time, study on the mitigation measures indicates that the feed-bleed measure can cool the core effectively.
- Severe accident,
- Mitigation measure,
- Feed-bleed