The competency of organizational safety control structure; a framework for evaluation

Ahmad Dehghan Nejad and Amirhosein Bahramzadeh ()
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Ahmad Dehghan Nejad: Shahid Beheshti University of Medical Science (SBMU)
Amirhosein Bahramzadeh: Shahid Beheshti University of Medical Sciences (SBMU)

International Journal of System Assurance Engineering and Management, 2021, vol. 12, issue 6, No 12, 1180-1198

Abstract: Abstract The latest generation of accident models demonstrate that the root causes of the systemic accidents in complex sociotechnical systems derive from the system’s inefficient organizational safety control structure; the "structure" that has not adapted itself to the under-controlled dynamic system and, consequently, is not able to control system’s hazardous behaviors. Hence, in this paper, a clear approach is presented to evaluate organizational safety control structure’s competency. In this approach, the modelling process of the System Theoretic Process Analysis (STPA) is used to model hierarchical safety control structure; then, Bayesian Belief Net (BBN) is applied for the competency evaluation of the structure. Clearly, a novel procedure is introduced for converting an STPA-based safety control structure to a BBN for achieving some invaluable safety lead indicators via quantitative analysis.

Keywords: Safety control structure; Complex sociotechnical system; Bayesian belief net (BBN); System theoretic process analysis (STPA) (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s13198-021-01373-8

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