Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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A Study for Comparison of Consequence Analysis for Buried Pipeline Considering the Depth Factor

깊이 인자를 고려한 매설배관의 사고피해영향 비교 분석에 관한 연구

  • Han, Seung-Hoon (Dept. of Chemical Engineering, Kwang-Woon University) ;
  • Seol, Ji-Woo (Dept. of Chemical Engineering, Kwang-Woon University) ;
  • Yoo, Byong-Tae (Dept. of Chemical Engineering, Kwang-Woon University) ;
  • Tae, Chan-Ho (Dept. of Chemical Engineering, Kwang-Woon University) ;
  • Ko, Jae Wook (Dept. of Chemical Engineering, Kwang-Woon University)
  • Received : 2016.01.20
  • Accepted : 2016.09.09
  • Published : 2016.10.31
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Abstract

Buried pipe system is subject to leak or rupture due to internal and external defects with age. Especially, if the pipeline is designed for pressurized gas, the leak can wreak a devastating on its surrounding area. The current method of setting up underground gas pipeline is based on OGP criteria of applying one tenth of the inner pipe pressure. The criteria is applied irrespective of their burial depth or pipe's properties. At times, even the whole safety measures are totally ignored. Considering the magnitude of possible damage from a gas leakage, a precise analytical tool for the risk assessment is urgently needed. The study was conducted to assess possible scenarios of gas accidents and to develop a computer model to minimize the damage. The data from ETA was analyzed intensively, and the model was developed. The model is capable of predicting jet fire influence area with comprehensive input parameters, such as burial depth. The model was calibrated and verified by the historic accident data from Edison Township, New Jersey, the United States. The statistical model was also developed to compare the results of the model in this study and the existing OGP model. They were in good agreement with respect to damage predictions, such as radiation heat coming from 10 meters away from the heat source of gas flame.

매설배관은 내부 또는 외부의 결함으로 인하여 leak나 rupture가 발생 할 수 있으며, 가스가 누출 시 큰 사고가 발생할 수 있기 때문에 정량적 위험성평가를 통한 분석이 필요하다. 하지만 현재 매설배관에 대한 위험성 평가시 매설을 고려하지 않거나, 매설 깊이를 고려하지 않고 무조건 배관압력의 1/10으로 가정하는 OGP기준을 사용하고 있는 실정이다. 이에 본 연구에서는 여러 기관의 매설배관 ETA분석자료를 통하여 발생가능 사고 중 Jet fire의 사고피해영향을 분석하였으며, Jet fire의 복사열 계산에 있어서 배관의 매설깊이 인자를 고려한 매설모델을 수립하였다. 사례연구는 New Jersey의 Edison지역에서 발생한 사고를 이용하여 본 모델과 OGP모델을 비교 분석하였다. 연구결과 화염원으로부터 10m거리를 기준으로 매설모델의 복사열 값이 OGP모델에 비해 실제 사례와 비슷한 값을 얻을 수 있었다.

Keywords

References

  1. Ko, S. W. , "Optimization of Biogas Purifying and Upgrading Process for City Gas Supply", Kwang-Woon university (2014)
  2. OGP, "Risk Assessment Data Directory-Vulnerability of Humans", Report No.434-14.1, (2010)
  3. Lee, D. H. et al., "A Study on the Accident Consequences of High Pressure Pipelines by Applying Reduction Factors", Journal of the Korean Institute of Gas, 16(5), 1-6, (2012) https://doi.org/10.7842/kigas.2012.16.5.1
  4. Kim, J. H., et al., "Comsequence Analysis for Release Scenario of Buried High Pressure Natural Gas Pipeline", Journal of the Korean Institute of Gas, 18(3), 67-74, (2014) https://doi.org/10.7842/kigas.2014.18.3.67
  5. OGP, "Risk Assessment Data Directory, Consequence modilling Report No.434-7", (2010)
  6. Lee, H. C., Ryoo, J., Kim, T. O., "Selection of Release Scenario and Consequence Analysis for Gas Explosion by Pipe Release", Journal of the Korean Institute of Gas, 10(4), 52-62, (2006)
  7. Center for Chemical Process Safety, Guidelines for Chemical Process Quantitative Risk Analysis, Wiley-AlChE, pp,59-284, 2nd, (2000)
  8. Prank P. Lees, Lee's Prevention In the Process Industries(3rd), Elsevier, (2004)
  9. Crowl, D. A. Louvar, J. F., Center for Chemical Process Safety, Guidelines for Chemical Process Safety(3rd), Wiley-AlChE, pp,119-305, (2011)
  10. Jo, Y. D., Ahn, B. J., "Analysis of Hazard Areas Associated with High-Pressure Natural-Gas Pipelines", Journal of Loss Prevention in the Process Industries, 15(3), 179-788, (2000) https://doi.org/10.1016/S0950-4230(02)00007-4
  11. Steel Pipelines on Land-Guide to the Application of Pipeline Risk Assessment to Proposed Developments in the Vicinity of Major Accident Hazard Pipelines Containing Flammables-Supplement to PD 8010-1(4th), British Standards Institution, (2008)
  12. API 581 : Risk-Based Inspection Base Resource Document(1st), American petroleum Institute, (2000)
  13. Application of Pipeline Risk Assessment to Proposed Developments in the Vicinity of High Pressure Natural Gas Pipelines TD2(1st), Institution of Gas Engineers & Managers, (2008)
  14. Jung, J. Y., "CFD simulation of Jet fire Characterlistic", Busan university, (2010)
  15. Report on a study of international pipeline accidents, HSE, (2000)