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A Study on Integrated SE Process for the Development of the Railway Systems with Safety Assessment Included  

Yoon, Jae-Han (아주대학교, 시스템공학과)
Lee, Jae-Chon (아주대학교, 시스템공학과)
Hong, Seon-Ho (한국철도기술연구원, 철도종합안전기술개발사업단 안전SE팀)
Publication Information
Journal of the Korean Society for Railway / v.10, no.4, 2007 , pp. 438-443 More about this Journal
Abstract
This paper proposes an integrated SE process for the development of railway systems with safety assessment included. Although the safety assessment process must be performed with SE process properly with good coordination, the interfaces between the two processes have not been clear. Thus, in many of safety critical system developments in Korea, it is difficult to assess safety in proper development phase. The process model proposed in this paper is based on both the concept of system life cycle and the repetitive use of SE process. In each of development phases, appropriate safety assessment methods are described. Also the evaluation of the integrated system incorporating safety factors is described. The resultant process model is expressed by the Enhanced Functional Flow Block Diagram (EFFBD) using a CASE tool. The model also allows timeline analysis for identifying activity flow and data flow, resulting in the effective management of process. In conclusion, the integrated process enable both the SE process and safety assessment process to cooperate with each other from early development phase throughout the whole system life cycle.
Keywords
SE Process; Safety Assessment Process; System Safety;
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  • Reference
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