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Development and Application of Life-Assessment Guidelines for Fossil-Fuel Power Plant Facilities in Korea

한국 화력 발전설비의 수명평가기준 개발 및 활용

  • Choi, Woo-Sung (Power Generation Laboratory, KEPCO Research Institute) ;
  • Song, Gee-Wook (Power Generation Laboratory, KEPCO Research Institute) ;
  • Kim, Bum-Shin (Power Generation Laboratory, KEPCO Research Institute) ;
  • Hyun, Jung-Seob (Power Generation Laboratory, KEPCO Research Institute) ;
  • Heo, Jae-Sil (Power Generation Laboratory, KEPCO Research Institute)
  • 최우성 (한국전력공사 연구원 수화력발전연구소) ;
  • 송기욱 (한국전력공사 연구원 수화력발전연구소) ;
  • 김범신 (한국전력공사 연구원 수화력발전연구소) ;
  • 현중섭 (한국전력공사 연구원 수화력발전연구소) ;
  • 허재실 (한국전력공사 연구원 수화력발전연구소)
  • Received : 2010.05.07
  • Accepted : 2010.07.22
  • Published : 2010.09.01

Abstract

In view of the frequent start-ups and load changes in the recent past, there is a need for fossil-fuel power plants to be more efficient and reliable for long-term operation. Under high-temperature and high-pressure conditions, severe creep and fatigue damages can occur in major plant facilities, particularly, turbines and boilers. For highly stable operation and better maintenance, various techniques that facilitate a systematic assessment of the service life of critical facilities have been developed. However, to date, in Korea, to evaluate the remaining life of major facilities of fossil power plant, qualitative or semiquantitative analyses are carried out without following any standard guidelines or procedure. In this study, a standard code for assessing the remaining life of major plant facilities is proposed. This code takes into account creep and fatigue damage, which are generally accepted as dominant causes of damage to facilities. KEPIC (Korea Electric Power Industry code) is scheduled to include this guideline in 2010.

최근 들어 화력발전소는 잦은 기동과 부하 변동 하에서 안정적인 운전 및 관리에 대한 요구가 높아지고 있다. 특히 터빈, 보일러와 같이 고온 고압의 조건에서 운전되는 발전 설비의 경우 크리프 및 피로 손상의 영향으로 설비의 수명이 감소하게 된다. 보다 안전한 발전소 운영을 위해 설비의 정확한 수명평가가 중요하며 현재까지 다양한 방법이 개발되어 적용되고 있다. 그러나 현재까지는 표준화된 가이드라인이나 절차 없이 정성적/준정량적 분석에 의해 주요 설비의 수명을 평가하고 있다. 본 연구에서는 크리프 및 피로 손상기구에 근거하여 국내 화력발전 주요 설비의 수명 소비율을 평가하는 표준화된 기준을 개발하였고 실제 설비에 적용하여 평가 기준의 활용성을 검증하였다. 본 기준은 2010 전력기술기준에 수록될 예정으로 수명평가의 정확성 향상과 수명관리 표준화에 기여할 것이다.

Keywords

References

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Cited by

  1. Study on Creep Damage Model of 1Cr1Mo1/4V Steel for Turbine Rotor vol.35, pp.4, 2011, https://doi.org/10.3795/KSME-A.2011.35.4.447