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SEM-based study on the impact of safety culture on unsafe behaviors in Chinese nuclear power plants

Ma Li|Zhang Meihui|Dai Licao|Liang Ziyi
한국원자력학회 (Korean Nuclear Society)|2023.10|Nuclear Engineering and Technology|제55권 제10호|pp. 3628-3638|DOI 10.1016/j.net.2023.06.028

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키워드

SEMSafety cultureLatent errorsHuman factors analysis and classification systemUnsafe behaviors
주제분류원자력공학

초록

This paper uses 135 Licensed Operator Event Reports (LOER) from Chinese nuclear plants to analyze how safety culture affects unsafe behaviors in nuclear power plants. On the basis of a modified human factors analysis and classification system (HFACS) framework, structural equation model (SEM) is used to explore the relationship between latent variables at various levels. Correlation tests such as chi-square test are used to analyze the path from safety culture to unsafe behaviors. The role of latent error is clarified. The results show that the ratio of latent errors to active errors is 3.4:1. The key path linking safety culture weaknesses to unsafe behaviors is Organizational Processes/Inadequate Supervision/ Physical/Technical Environment/Skill-based Errors. The most influential factors on the latent variables at each level in the HFACS framework are Organizational Processes, Inadequate Supervision, Physical Environment, and Skill-based Errors.

Abstract

This paper uses 135 Licensed Operator Event Reports (LOER) from Chinese nuclear plants to analyze how safety culture affects unsafe behaviors in nuclear power plants. On the basis of a modified human factors analysis and classification system (HFACS) framework, structural equation model (SEM) is used to explore the relationship between latent variables at various levels. Correlation tests such as chi-square test are used to analyze the path from safety culture to unsafe behaviors. The role of latent error is clarified. The results show that the ratio of latent errors to active errors is 3.4:1. The key path linking safety culture weaknesses to unsafe behaviors is Organizational Processes/Inadequate Supervision/ Physical/Technical Environment/Skill-based Errors. The most influential factors on the latent variables at each level in the HFACS framework are Organizational Processes, Inadequate Supervision, Physical Environment, and Skill-based Errors.

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