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Systems Engineering Approach to Reengineering of YGN 3&4 Safety Depressurization System Retrofit Design

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영광3,4호기 안전감압계통 추가설비 설계최적화를 위한 시스템엔지니어링 적용연구 1

DOI: http://dx.doi.org/10.14248/JKOSSE.2015.11.1.001 ISSN 1738-480X (Print) ISSN 2288-3592 (Online) Journal of the Korean Society of Systems Engineering

영광3,4호기 안전감압계통 추가설비 설계최적화를 위한 시스템엔지니어링 적용연구

최문원* 김규완 한기인* 한국전력 국제원자력대학원대학교

Systems Engineering Approach to Reengineering of YGN 3&4 Safety Depressurization System Retrofit Design

Mun Won Choi, Kyu Wan Kim, Ki In Han

KEPCO International Nuclear Graduate School(KINGS)

Abstract : The purpose of this paper is to present the results of reengineering of the YGN 3&4 (Yonggwang Nuclear Power Plant, Units 3&4) SDS (Safety Depressurization System) retrofit design and to make recom- mendations for the improvement in design and design procedure implementing the Systems Engineering (SE) process. YGN 3&4 is a basic model for OPR1000 (the Korean standard 1000 MWe plant). The basic model, herein, represents the reference plant for the OPR1000 development. In the middle of the YGN 3&4 construction, the Korean Nuclear Regulatory Body requested a retrofit of this plant with a means to rapidly depressurize the plant in conformance with a severe accident mitigation requirement. For the reengineering of the SDS in YGN 3&4, V-model and functional and physical architectures have been developed. A SE decision making method has been used for the selection of SDS valves. Finally, recommendations have been made to improve OPR1000 design for the improved operation and enhanced safety.

Key Words : Systems engineering, Reengineering, Retrofit, SDS (safety depressurization system), V-model, pressure relief valve

* 교신저자 : [email protected]

* This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial

License(http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution,

and reproduction in any medium, provided the original work is properly cited.

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