원자력발전소 관통부 충전구조의 내화성능평가에 관한 연구

A Study on Assessment of Penetration Seals Performance of Nuclear Power Plants

  • 발행 : 2004.12.01

초록

원자력발전소에서 방화벽 관통부 내화충전구조는 화재가 발생장소 이외의 구역으로 전파되는 것을 차단하여 타구역에 설치된 안전에 중요한 기기를 보호하는 중요한 구성요소이다. 그러나 국내 장기 가동중 원전의 경우 관통부 충전구조의 내화성능을 입증하는 인증시험서가 구비되어 있지 않아 별도의 내화성능평가가 이루어져야 하고, 성능평가 결과가 적정 내화등급을 만족하지 못하는 관통부에 대해서는 관통물질의 재배치 둥의 구조변경이 이루어져야 한다 본 연구는 분석적인 방법에 의한 관통부 충전구조의 내화성능 평가기법을 정립하고. 분석적인 방법을 적용하여 실제 발전소에 설치된 관통부 충전구조의 내화등급을 결정하는 방법을 제시하였다. 이를 통하여 분석에 의한 관통부 충전구조의 내화성능평가방법은 내화인증시험서가 없는 국내 장기가동 원자력발전소에 효율적으로 적용될 수 있을 것으로 판단된다.

The function of fire barrier penetration sealing is highly important to confine a fire propagation a fire severity within a fire area where the fire started. Especially for the penetration seals at the nuclear power plants with the long-term operated history, it is needed to make it clear that the conformance to the sealing requirements has been proven to guarantee the fire-resistive performance of fire barrier penetration parts. If there are any parts of fire barrier penetration sealing which can not meet the required rating for the fire endurance performance, the relevant parts must be modified to meet regulatory requirements. At this paper, the engineering analysis methodology was established to approximate the fire endurance rating for the fire barrier penetration seals. With this study, the method of engineering analysis to decide fire endurance rating for the fire barrier penetration seals was established and this way can be utilized to check the performance of the fire rating for the penetration seal at the domestic nuclear power plants.

키워드

참고문헌

  1. 10 CFR 50.48, Fire Protection(1981)
  2. 10 CFR 50, App. R, Fire Protection Program for Nuclear Power Facilities Operating Prior to January 1(1979)
  3. BTP CMEB 9.5-1, Guidelines for Fire Protection for Nuclear Power Plants
  4. Generic Letter 86-10, Supplement 1, Fire Endurance Test Acceptance Criteria for Fire Barrier Systems Used to Separate Redundant Safe Shutdown Trains Within the Same Fire Area', dated March 25(1994)
  5. NUREG-1552, Fire Barrier Penetration Seals in Nuclear Power Plants(1996. 7)
  6. NUREG-1552, Supplement 1, Fire Barrier Penetration Seals in Nuclear Power Plants(1999. 1)
  7. Information Notice 88-56, 'Potential Problems With Silicone Foam Fire Barrier Penetration Seals', dated August 4(1988)
  8. ASTM E-119, Standard Test Methods for Fire Tests of Building Construction and Materials
  9. NFPA-251, Standard Methods of Fire Tests of Building Construction and Materials
  10. ASTM E-814, Standard Test Methods for Fire Tests of Through-Penetration Fire Stops
  11. IEEE-634 Standard Cable Penetration Fire Stop Qualification Test
  12. UL-1479 Fire Rests of Through-penetration Firestops
  13. TM.02NE16.P2004.361, 방화벽 관통부 내화충전구조 성능평가(2차년도), 한국전력공사 전력연구원(2004)