한국원자력학회:학술대회논문집 (Proceedings of the Korean Nuclear Society Conference)
- 한국원자력학회 1995년도 추계학술발표회논문집(2)
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- Pages.602-607
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- 1995
Safety Review Experience of Computerized Logic System for YGN 3 and 4
- Yun, Won-Young (Korea Institute of Nuclear Safety) ;
- Kim, Dae-Il (Korea Institute of Nuclear Safety) ;
- Koh, Jong-Soo (Korea Institute of Nuclear Safety) ;
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Kim, Bok-Ryul
(Korea Institute of Nuclear Safety) ;
- Oh, Sung-Hun (Korea Institute of Nuclear Safety) ;
- Lim, Jang-Hyun (Korea Institute of Nuclear Safety)
- 발행 : 1995.05.01
초록
This article presents safety review experience of microprocessor-based Interposing Logic System(ILS) of Engineering Safety Feature Actuation System(ESFAS). The ILS is the first application of computerized logic design to safety system in Korean nuclear power plants without verification of the system reliability by proven technology concept. As a result of evaluation for the ILS, Korea Institute of Nuclear Safety(KINS) concluded that the microprocessor-based ILS is not acceptable in some features detailed enough to defend against software common mode failures(CMF). Therefore, we required licensee to install hardwired interlock signal configuration and a Hardwired Backup Panel to control safety-related equipment. We believe that the microprocessor-based ILS with the hardwired backup panel and inter-connection of interlock signal by hardwired configuration will improve the plant safety.
키워드