Evaluating the impacts of resilience engineering on HSE and ergonomics
factors by Z-number cognitive map in a large petrochemical plant
Ali Azadeh*
and Mansour Zarrin
School of Industrial Engineering and Center of Excellence for Intelligent-Based Experimental Mechanics, College
of Engineering, University of Tehran, Tehran, Iran
Abstract
Management of health, safety, environment and ergonomics (hence HSEE) is very significant,
especially in complex industrial systems such as petrochemical companies. Resilience is the
inherent ability of a system to adapt its functioning before and during disturbances. This study
evaluates and analyzes the impacts of resilience engineering (RE) principles on integrated HSEE
factors. It is useful that in decisions sciences, information be reliable due to existing uncertainty
and vagueness in information. For this purpose, we integrate the concept of Z-numbers with
fuzzy cognitive map (FCM) approach and call this novel approach Z-number cognitive map. The
main advantages of the proposed approach are determination of the weighted causality relations
(for employing FCM) as well as handling uncertainty (for considering Z-numbers concept). This
approach is used to develop main RE indicators useful for proactive management of HSEE. The
required data for the proposed approach is collected from a large petrochemical plant by
distributing questionnaires. According to the results, the RE principles have significant impact on
HSEE. To the best of our knowledge, this is the first study employed Z-number cognitive map
for evaluating and improving the impacts of RE on HSEE factors in a large petrochemical plant.