Study on the Relationship Between PSA and Safety Objectives of Nuclear Power Plant

Chen, Yan; Li, Chao‐Jun; Fu, Zhiwei; Song, Wei; Zhang, Chunming

doi:10.1115/icone21-16302

Cited by 1 publication

(1 citation statement)

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“…To obtain these values, the accident sequences from initial events must be defined and, then, their consequences and frequencies of occurrences must be quantified on the basis of the event frequency and compared at human reliability data. CDF is a value obtained from Level 1 PSA, while LERF is a value obtained from Level 2 PSA (Zhu, 2004;Chen et al, 2013). CDF and LERF have similar meaning within the probabilistic method for screening human actions, for ease of discussion, in this study we refer only to CDF.…”

Section: Psa Importance Measuresmentioning

confidence: 99%

An improved probabilistic method for screening safety-related human actions in nuclear power plants

Zhang

Wang

Zio

et al. 2018

Nuclear Engineering and Design

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For the reliability and safety of nuclear power plants (NPPs), their design and operation must follow the relevant principles of human factors engineering (HFE). As various human actions are involved in the operation of NPPs, there is a need to screen human actions first and, then, focus the analysis on the critical ones. In the past, different NPPs have adopted different standards in screening human actions and many of these standards lack theoretical support. In this study, the concept of human action risk achievement worth (HRAW) is introduced to support probabilistic screening. A new probabilistic method for screening safety-related human actions in NPPs is proposed. The results of a case study indicate that the proposed method performs well and better than the previous probabilistic screening method typically used, it also implies that this method can provides methodological support to the probabilistic screening method of human actions. On the one hand, utilizing this method to screen human actions can help identifying those actions that are critical for the safety of NPPs. On the other hand, it can reduce the workload and improve work efficiency. The method is traceable and easy to use. It not only can be used in the design of NPPs, but also can provide guidelines for reviewers to evaluate the NPPs safety.

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Section: Psa Importance Measuresmentioning

confidence: 99%