Theoretical foundations for building organizational safety models for PRA applications

Z. Mohaghegh, A. Mosleh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The primary purpose of this paper is to provide a theoretical perspective for extending Probabilistic Risk Analysis (PRA) modeling frameworks to include the effects of organizational factors as the deeper, and sometimes more fundamental causes of accidents and incidents. Vast majority of the quantitative methods and a number of qualitative approaches for assessing the impact of organizational factors on technical systems risk have been developed in the nuclear industry. However in the absence of a comprehensive set of principles and modeling guidelines rooted in theory and empirical studies, all proposed models look equally good, or equally poor, with very little basis to discriminate and build confidence. Therefore, through a multidisciplinary effort, the authors focused on the possibility of improving the theoretical foundations and introduction of a set of modeling principles for the field of Organizational Safety Risk Analysis. Then, as a realization of aforementioned modeling principles, an organizational safety risk framework, named Socio-technical Risk Analysis (SoTeRiA) * was developed. The proposed safety risk framework builds a theoretical relation between technical system risk, organizational safety culture, organizational safety structure and practices, and organizational safety climate. SoTeRiA explicitly recognizes the relationships among constructs at multiple levels of analysis, and extend the PRA framework to include the effects of organizational factors in a more comprehensive and defensible way.

Original languageEnglish (US)
Title of host publicationInternational Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2008
Pages1627-1638
Number of pages12
StatePublished - Dec 1 2008
Externally publishedYes
EventInternational Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2008 - Knoxville, TN, United States
Duration: Sep 7 2008Sep 11 2008

Publication series

NameAmerican Nuclear Society - International Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2008
Volume3

Other

OtherInternational Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2008
Country/TerritoryUnited States
CityKnoxville, TN
Period9/7/089/11/08

Keywords

  • Organizational factors
  • PRA
  • Safety causal modeling
  • Safety culture

ASJC Scopus subject areas

  • Statistics, Probability and Uncertainty
  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality
  • Statistics and Probability

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