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ISSN : 1229-6783(Print)
ISSN : 2288-1484(Online)
Journal of the Korea Safety Management & Science Vol.17 No.1 pp.93-101
DOI : https://doi.org/10.12812/ksms.2015.17.1.93

On Reducing Systemic Failure of Safety-Critical Systems by DSM-based Systematic Design of Interfaces

Ho-Jeon Jung*, Jae-Chon Lee*
*Dept. of Systems Engineering, Ajou University
†Corresponding Author : Prof. Jae-Chon Lee,
Dept. of Systems Engineering, Ajou University, Wonchon-dong, Youngtong-gu, Suwon, 443-749,
Tel: 031-219-3941, E-mail: jaelee@ajou.ac.kr
January 20, 2015 March 13, 2015 March 16, 2015

Abstract

The demand from customers on better products and systems seems to be ever increasing. To meet the demand, the systems are becoming more and more complicated in terms of both scale and functionality, thereby requiring enormous effort in the development. One bright spot of this trend is that such effort has been the driving forces of the remarkable advancement in modern systems development. On the other hand, safety issues appear to be critical in many large-scale systems such as transportation and weapon systems including high-speed trains, airplanes, ships, missiles/rockets launchers, and so on. Such systems turn out to be prone to a variety of faults and thus the resultant failure can cause disastrous accidents. For the reason, they can be referred to as safety-critical systems. The systems failure can be attributed to either random or systemic factors (or sometimes both). The objective of this paper is on how to reduce potential systemic failure in safety critical systems. To do so, a proper system design is pursued to minimize the risk of systemic failure. A focus is placed on the fact that complex systems have a lot of complicated interfaces among the system elements. To effectively handle the sources of hazards at the complicated interfaces and resultant failure, a method is developed by utilizing a design structure matrix. As a case study, the developed method is applied in the design of train control systems.
Safety, Systemic Failure, DSM, Hazard Analysis, Systems Engineering

안전중시 시스템에서 DSM 기반 인터페이스 설계를 통한 시스템 오류 감축에 관한 연구

정호전*, 이재천*
*아주대학교 시스템공학과

초록

 

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Reference

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