Preliminary Analysis of Probabilistic Safety Assessment for Underground Nuclear Power Plant

Zhang Hang; Deng Chunrui; Kong Xiangcheng; Zou Zhiqiang; Zhang Dan; Wu Lingjun; Su Yi

doi:10.13832/j.jnpe.2016.04.0125

Volume 37 Issue 4

Feb. 2025

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Zhang Hang, Deng Chunrui, Kong Xiangcheng, Zou Zhiqiang, Zhang Dan, Wu Lingjun, Su Yi. Preliminary Analysis of Probabilistic Safety Assessment for Underground Nuclear Power Plant[J]. Nuclear Power Engineering, 2016, 37(4): 125-129. doi: 10.13832/j.jnpe.2016.04.0125

Citation:

Zhang Hang, Deng Chunrui, Kong Xiangcheng, Zou Zhiqiang, Zhang Dan, Wu Lingjun, Su Yi. Preliminary Analysis of Probabilistic Safety Assessment for Underground Nuclear Power Plant[J]. Nuclear Power Engineering, 2016, 37(4): 125-129. doi: 10.13832/j.jnpe.2016.04.0125

Citation:

Zhang Hang, Deng Chunrui, Kong Xiangcheng, Zou Zhiqiang, Zhang Dan, Wu Lingjun, Su Yi. Preliminary Analysis of Probabilistic Safety Assessment for Underground Nuclear Power Plant[J]. Nuclear Power Engineering, 2016, 37(4): 125-129. doi: 10.13832/j.jnpe.2016.04.0125

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Preliminary Analysis of Probabilistic Safety Assessment for Underground Nuclear Power Plant

doi: 10.13832/j.jnpe.2016.04.0125

1. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China;
2. Changjiang Institute of Survey, Planning, Design and Research, Wuhan, 430010, China

Received Date: 2016-03-25
Rev Recd Date: 2016-05-18

Available Online: 2025-02-15

Abstract

Abstract

Based on the natural safety advantages of underground nuclear reactors such as the bounding rock and soil, considering depressurization cavern, isolation gate, filtration and venting system, and compared with that of the normal ground NPPs, the large release frequency（LRF） for underground NPPs is analyzed with probabilistic safety assessment（PSA） method. Analysis results show that the LRF of underground NPPs is at least two orders of magnitude lower than that of the ground NPPs, so the goal of practical elimination of large release by design could be realized.
- Underground nuclear power plant,
- PSA,
- Radioactive risk