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Consequence Analysis for Release Scenario of Buried High Pressure Natural Gas Pipeline

지하매설 도시가스배관의 누출시나리오에 따른 사고피해영향분석

  • Received : 2014.06.10
  • Accepted : 2014.06.26
  • Published : 2014.06.30

Abstract

Buried natural gas pipelines in densely populated urban areas have serious hazards of property damages and casualties generated by release, dispersion, fire and explosion of gas caused by outside or inside failures. So as to prevent any accident in advance, managers implement danger management based on quantitative risk analysis. In order to evaluate quantitative risk about buried natural gas pipelines, we need calculation for radiant heat and pressure wave caused by calculation for release rate of chemical material, dispersion analysis, fire or explosion modeling through consequence analysis in priority, in this paper, we carry out calculation for release rate of pressured natural gas, radiant heat of fireball based in accident scenario of actual "San Bruno" buried high pressured pipelines through models which CCPS, TNO provide and compare with an actual damage result.

인구가 밀집되어 있는 도심지역에 매설된 천연가스 공급배관은 외부 또는 내부 결함으로 인한 가스의 누출, 확산, 화재, 폭발로 발생되는 재산과 인명피해의 큰 잠재위험을 지니고 있다. 사고를 미연에 방지하기 위해 정량적 평가에 기초한 위험관리를 실시하고 있으며, 매설배관의 정량적 위험성을 평가하기 위해서는 우선적으로 사고피해영향 분석을 통한 화학물질의 누출량 계산, 확산 분석, 화재 및 폭발로 인한 복사열과 압력파 계산이 필요하다. 본 논문에서는 CCPS, TNO에서 제안하는 model 들을 통하여 실제 San Bruno 매설배관 폭발 사고 시나리오를 기반으로 천연가스의 누출량, Fireball의 복사열 계산을 수행하고 결과 값을 실제 피해결과와 비교분석 하였다.

Keywords

References

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Cited by

  1. 깊이 인자를 고려한 매설배관의 사고피해영향 비교 분석에 관한 연구 vol.20, pp.5, 2014, https://doi.org/10.7842/kigas.2016.20.5.9
  2. 지하매설 고압 가연성 가스 배관의 누출시나리오에 따른 피해 영향 거리 vol.33, pp.3, 2014, https://doi.org/10.14346/jkosos.2018.33.3.33