Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Wire-rope Type Furnace Scaffolding and Its Lifting System for Large-sized Boiler

대형 보일러 와이어로프 노내비계 및 인양시스템에 관한 연구

  • Received : 2016.01.29
  • Accepted : 2016.04.22
  • Published : 2016.07.01
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Abstract

Boilers of large-sized coal-fired power plants are being operated under very poor conditions such as continuous operation or repeating of start-up and shutdown for a stable supply of electricity. Thus periodic inspection and maintenance are required to ensure reliability of operation. The loads of existing scaffolding systems for the maintenance of boilers are concentrated in the lower parts structurally, which may cause a serial collapse of the overall scaffolding system when there are problems in some members. Therefore, in this study, a safe furnace scaffolding system is developed by dispersing the loads in the upper part, as well as minimizing the hazards of serial collapsing. In addition, for cases where the direct installation of furnace scaffolding is challenging owing to the structure of the boiler tube, a lifting system for the installation of furnace scaffolding is developed so that furnace scaffolding can be supported to secure the integrity of the power generating facility.

대형 석탄 화력발전소의 보일러는 안정적인 전력량 수급을 위하여, 계속적인 운전 혹은 기동 정지가 반복하면서 운전 되는 등 매우 열악한 상태에서 운전되고 있기 때문에 신뢰성을 유지하기 위한 주기적 점검과 정비는 필수적이다. 정비를 위한 기존의 비계시스템은 모든 하중이 하부로 집중되어 일부 부재에 문제 발생시 연쇄적으로 비계 시스템이 붕괴되는 문제점이 있다. 이에 따라 본 연구에서는 새로운 노내비계를 개발하여 상부에서 하중을 분산시키고, 일부 부재에 문제가 발생하더라도 연쇄 붕괴의 위험을 최소화하였다. 또한, 보일러 튜브의 구조로 인하여 직접적인 설치가 어려운 경우 노내비계의 설치를 위한 인양시스템을 개발하여 노내비계의 구조적인 안정성을 향상시키고 비계 작업자의 안전성을 확보하여 발전설비의 건전성을 확보할 수 있었다.

Keywords

References

  1. Kim, J. H., Kim, E. S., Park, W. S., Moon, B. S., Goh, J. M., Park, N. K., Yoon, K. B. and Cho, S. W, 2013, "Forensic Engineering Study on Structural Integrity Evaluation of Scaffolding System Tower using ANSYS," Journal of Korean Society of Safety, Vol. 28, No. 6, pp. 42-48. https://doi.org/10.14346/JKOSOS.2013.28.6.042
  2. Song, G. W., Kim, B, S., Choi, W. S. and Park, M. S., 2013, "Prediction of Maintenance Period of Equipment Thorough Risk Assesment of Thermal Power Plants," Trans. Korean Soc. Mech, Eng. A, Vol. 37, No. 10, pp.1291-1296. https://doi.org/10.3795/KSME-A.2013.37.10.1291
  3. Lee, Y. H., 2013, "A Study of Expanding Range Of Diagnostic and Regular Inspection Cycle for Aging Power Plants," Electric Engineers Association, Korea, pp. 46-88.
  4. Ryu, B. J., Shin, G. B., Lee, J. Y., Baek, S. G. and Kim, H. S., 2006, "A Study on Vibration Scaffolding Structures with a Hoist According to Payloads," The Korean Society for Noise and Vibration Engineering Vol. 11, pp. 506-511.
  5. Sam, B., 2007, "Forensic Engineering : Reduction of Risk Improving Technology," Engineering Failure Analysis, Vol. 14, pp. 1019-1037. https://doi.org/10.1016/j.engfailanal.2006.11.065
  6. Park, J. K. and Jeong, S. G., 2015, "The Survey of the Current Situation for System Scaffolding in the Domestic Construction Site(II)," Journal of the Korean Society of Safety, Vol. 30, No. 2, pp. 35-40. https://doi.org/10.14346/JKOSOS.2015.30.2.35
  7. Park, J. K. and Jeong, S. G., 2010, "The Survey of the Current Situation for System Scaffolding in the Domestic Construction Site," Journal of the Korean Society of Safety, Vol. 25, No. 3, pp. 107-111.