LNG 저장탱크 강재지붕의 충격 및 화재에 대한 안전성평가기법 개발

Development of Impact and Fire Hazard Analysis on the Steel Roof of LNG Storage Tank

  • Lee, Seung-Rim (Institute of Gas Safety R&D, Korea Gas Safety Corp.) ;
  • Park, Jang-Sik (Institute of Gas Safety R&D, Korea Gas Safety Corp.) ;
  • Lee, Young-Soon (Department of Safety Engineering, Seoul National University of Technology)
  • 발행 : 2009.02.28

초록

지금까지 한국에 도입된 LNG 저장탱크의 지붕형식은 지상식 탱크 및 지중식 탱크를 막론하고 모두 콘크리트 지붕형이었다. 그러나 저장탱크의 대형화와 경제성 측면에서의 장점으로 강재 지붕형 탱크의 도입이 적극적으로 검토되고 있다. 본고에서는 최적 설계된 200,000$k{\ell}$ 강재 지붕형 LNG 저장탱크의 강재지붕에 대한 충격 및 화재 안전성 평가기법을 개발하여 이를 표준화하고 기존의 콘크리트 지붕형 탱크와 비교 평가함으로써 강재 지붕형 탱크의 충격 및 화재에 대한 정량적인 안전성 자료를 확보하였다. 각각 도출된 4가지의 충격하중 및 화재 시나리오에 대해 유한요소해석기법을 이용해서 안전성평가를 수행하였다.

Traditionally all concrete roof type LNG storage tank have been constructing in Korea regardless of LNG tank types. But a steel roof LNG storage tank has merits relatively in designing larger scale tanks and construction cost so it is on the table to apply. This study was carried for the standardized development of impact and fire hazard analysis on a 200,000$k{\ell}$ steel roof LNG storage tank designed by KOGAS and for getting quantitative safety data on a steel roof LNG storage tank compared with a conventional concrete roof LNG storage tank by evaluating with this method. Hazard analysis on each four impact and fire scenarios were developed and evaluated by using finite element methods.

키워드

참고문헌

  1. 한국가스안전공사-한양대학교, 강재지붕 LNG 저장탱크의 구조 안전성평가, (2008.8)
  2. BSI, Std 7777 (Flat-bottomed, vertical, cylindrical storage tanks for low tempe rature service), (1993)
  3. CEN, EN 14620(Design and manufacture of site built, vertical, cylindrical, flat-bottomed steel tanks for the storage of refrigerated, liquefied gases with operating temperatures between $0{^{\circ}C}$ and $-165{^{\circ}C}$), (2006)
  4. CEN, EN 1473(Installation and equipment for liquefied natural gas-Design of onshore installations), (1997)
  5. NFPA, Std 59A, ., Standard for the Production, Storage, and Handling of Lique fied Natural Gas (LNG), (2006)
  6. BSI, BS 8110(Structural use of Concrete), (1997)
  7. 한국가스공사, Analysis for Radiant Heat Flux, (2000)
  8. 한국가스공사, Energency State-Burn Out, (2001)