Development of a Safety Assessment Method using Detailed Structural Analysis for Iron-Manufacturing Plant Structures

상세구조해석을 이용한 제철설비구조물 안전성 평가 기술개발

  • Published : 2005.03.01

Abstract

Up to date, the life extension of industrial plant structures has been strongly required in the field of iron-manufacturing company, atomic or power generation company and so on. Fault monitoring, maintenance of aging structural components, safety assessment and residual life prediction may be recognized as typical and/or practical methods in terms of life extension methods. Based on the construction of damage scenario, precise analysis method and development of the risk or reliability assessment, a number of studies have been carried out in this viewpoint. In conjunction with the finite element analysis technique, a practical procedure for the safety assessment of iron-manufacturing plant structures was developed in this paper with a particular interest in furnace. By virtue of the detailed finite element analyses for blust furnace under an operational condition, the validity of the proposed procedure for safety assessment was presented.

최근, 제철소, 원자력 및 수${\cdot}$화력 발전소 등 주요 기간설비에 있어서 해당 구조물, 관련 장비들의 노후화에 따른 고장진단, 수리보수, 안전성 평가와 잔여 수명 예측을 통한 수명연장에 관련된 요구가 높아지고 있다. 손상발생 시나리오의 구축, 정밀해석기법의 확립, 위험성 혹은 신뢰성 평가기술 개발 등에 관한 연구가 이러한 요구를 반영하여 활발하게 수행되고 있다. 본 연구에서는 구조물의 안전성 평가분야에서 가장 활발하게 사용되는 유한요소해석기술을 이용하여 제철설비 구조물의 안전성을 평가하는 절차를 개발하고 실제 가동 중인 고로를 대상으로 적용하여 유용성을 검토하였다.

Keywords

References

  1. Rao, S.S., Reliability based design, McGrawHill Inc.. 1992
  2. Casselman D., Eastman, K., 'Major rehabilitation program R.H. Saunders GS', Proc. of waterpower XIII, Buffalo, NY, 2003
  3. 'Gas Leak 방지를 위한 노저 철피 설계기술 개발', 포항산업과학연구원. 2002
  4. Moses, F., Kinser, D.E., 'Analysis of structural reliablitv', Journal of Structural Div., Vol.93, No. ST5, 1967
  5. Christensen, P. T., Baker, M.J., Structural reliability theory and its applications, Springer -Verlag, Berlin, 1982
  6. Development of a condition monitoring system - Hydrox, New York Power authority internal report, 2002
  7. ASME Boiler and Pressure Vessel Code 1998 Edition
  8. 정철섭, 김기석, '복합 재료로 구성된 축대칭 원판에서의 열응력', 한국전산구조공학회학회지, Vol. 8 , No.1. 1995, pp.173-186
  9. Barlow, R.E., Lambert, H.E., Introduction to Fault Tree Analysis, in Reliability and Fault Tree Analysis, SIAM, Philadelphia, 1975, pp. 7-37
  10. Troitsky, M.S., Tubular steel structures-theory and design, Concordia University Montreal. 1990