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A Study on the Drift Effect of Instrument Channel for Nuclear Power Plant

원전 계측 채널 Drift에 관한 연구

  • Kim, In Hwan (Korea Hydro & Nuclear Power Company, Central Research Institute) ;
  • Kim, Hyeong Taek (Korea Hydro & Nuclear Power Company, Central Research Institute) ;
  • Kim, Yun Jung (Korea Hydro & Nuclear Power Company, Central Research Institute)
  • 김인환 (한국수력원자력(주) 중앙연구원) ;
  • 김형택 (한국수력원자력(주) 중앙연구원) ;
  • 김윤중 (한국수력원자력(주) 중앙연구원)
  • Received : 2014.05.30
  • Accepted : 2014.09.15
  • Published : 2014.09.30

Abstract

The Instrument Channel setpoints of the Reactor Protection System(RPS) and the Engineered Safety Feature Actuation System(ESFAS) ensures the safety of Nuclear Power Plants (NPPs), and the actuation of the protection system should be guaranteed on power change condition. The goal of this study is to verify the appropriateness of the sensor drift and rack drift which are important factors for setpoints evaluation and to improve the setpoints margin using the operation data, design specifications and operation manuals of the NPPS.

원자력발전소의 원자로보호계통 및 공학적안전설비계통의 계측채널 설정치는 발전소 안전성을 확보하는 데 있으며, 출력조건의 변화시에는 보호계통의 작동이 보장되어야 한다. 본 연구에서는 발전소 운영자료, 시방서 및 운전 매뉴얼등을 사용하여 설정치를 평가하는 데 불확실도의 중요한 요소인 계측기와 process rack drift의 적절성을 확인하고, 설정치 여유가 부족할 경우에 대한 대책을 연구하였다.

Keywords

References

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