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Handling dependencies among performance shaping factors in SPAR-H through DEMATEL method
- Source :
- Nuclear Engineering and Technology; August 2023, Vol. 55 Issue: 8 p2897-2904, 8p
- Publication Year :
- 2023
-
Abstract
- The Standardized Plant Analysis Risk-Human Reliability Analysis (SPAR-H) method is a widely used method in human reliability analysis (HRA). Performance shaping factors (PSFs) refer to the factors that may influence human performance and are used to adjust nominal human error probabilities (HEPs) in SPAR-H. However, the PSFs are assumed to be independent, which is unrealistic and can lead to unreasonable estimation of HEPs. In this paper, a new method is proposed to handle the dependencies among PSFs in SPAR-H to obtain more reasonable results. Firstly, the dependencies among PSFs are analyzed by using decision-making trial and evaluation laboratory (DEMATEL) method. Then, PSFs are assigned different weights according to their dependent relationships. Finally, multipliers of PSFs are modified based on the relative weights of PSFs. A case study is illustrated that the proposed method is effective in handling the dependent PSFs in SPAR-H, where the duplicate calculations of the dependent part can be reduced. The proposed method can deal with a more general situation that PSFs are dependent, and can provide more reasonable results.
Details
- Language :
- English
- ISSN :
- 17385733 and 2234358X
- Volume :
- 55
- Issue :
- 8
- Database :
- Supplemental Index
- Journal :
- Nuclear Engineering and Technology
- Publication Type :
- Periodical
- Accession number :
- ejs62881350
- Full Text :
- https://doi.org/10.1016/j.net.2023.04.017