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Cases Study of Accidents in High Risk Organizations by System Dynamics  

Oh, Youngmin (서울대학교 공과대학 연구부)
Ryu, Jin ((주)미래정책자문그룹)
Publication Information
Korean System Dynamics Review / v.16, no.3, 2015 , pp. 5-29 More about this Journal
Abstract
The importance of the concept of safety culture has increased in the security of high-risk facility after Chernobyl accident in 1986. This paper elaborated the concept of safety culture and its main factors by Causal Loop Diagram. Due to the decline of safety culture, the occurrence of incidents and accidents require more and more corrective actions to the members of high-risk facilities and thereby increasing their workloads. Employees who must complete the task within the given time have to have time pressures and don't comply with the rules and procedures. Also, a schedule pressure is a big stress for employees, causing mistakes in precision work. In order to improve these problems, CLD of the safety culture in this paper suggests hiring more workers, re-allocation of given workloads and strengthen the learning, communication capabilities and safety leadership. In addition, the two real accident cases were analyzed to test the feasibility of the System Dynamic simulation model through the process of structuring the fault trees on the stationary black out accident in Kori unit 1 in South Korea and Kleen Energy power station explosion in US. The simulation results show that the various safety factors cause the serious accident combined with mechanical failure and safety culture will reduce the possibility of the accidents in these high-risk organizations. This simulation model can contribute to analyzing the impact of the organizational and human factors of safety culture and can provide the alternatives in high-risk facilities.
Keywords
High-Risk Facility; Safety Culture; Stationary Black Out; Kleen Energy Explosion; Safety Behavior;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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