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A Study on The Safety Management of City Gas Pipelines Attached on the Bridges

교량에 설치된 도시가스배관의 안전관리에 관한 연구

  • Yun, Young-Man (Pipeline Diagnosis Division, Korea Gas Safety Corporation) ;
  • Son, Sang-Geun (Pipeline Diagnosis Division, Korea Gas Safety Corporation) ;
  • Choi, Do-Kyun (Pipeline Diagnosis Division, Korea Gas Safety Corporation) ;
  • Lee, Su-Kyung (Graduate School of Energy & Environment, Seoul National Univ. of Technology)
  • 윤영만 (한국가스안전공사) ;
  • 손상근 (한국가스안전공사) ;
  • 최도균 (한국가스안전공사) ;
  • 이수경 (서울과학기술대학교 에너지환경대학원)
  • Received : 2017.06.13
  • Accepted : 2018.01.26
  • Published : 2018.02.28

Abstract

In this study, 398 city gas pipe systems installed on the bridges were surveyed and analyzed classified characteristics about the ages, length, and remote isolation devices installed or not. As a result of analysis, 43.0% pipes have been used more than 20 years and 89.4% do not have remote cut-off devices, so this study suggest safety management ways for the issues. Chosen 76 pipes were researched stress strain characteristics by CAESAR-II which is a specialized program for stress analysis. And, when a loop is installed on the bridge pipe, effect on code stress by the location and size of the loop was performed. This study can help to improve safety level by revising criteria of new installation, inspection and diagnostic.

이 논문에서는 도시가스 배관 중 교량에 설치된 배관 398개소에 대해 현황을 조사하고, 배관을 설치연도별, 길이별, 원격차단장치 설치여부 등 특성별로 분류하여 분석하였다. 분석결과 20년 이상 장기사용배관이 43.0%를 차지하고 있었고, 원격차단장치 미설치 교량배관은 89.4%에 달하는 등 드러난 현상에 대한 안전관리 방안을 제시하였다. 또한 조사된 교량설치 배관 중 76개소를 선정한 후 응력해석 전용프로그램인 CAESAR-II를 이용하여 응력특성을 연구하고, 교량배관 중 루프관을 설치할 경우 루프관의 위치 및 크기가 배관의 합성응력에 미치는 영향을 분석하였다. 본 연구의 결과를 통해 교량 배관의 설치, 검사 및 진단 기준 개선 등에 활용하여 교량설치 배관에 대한 안전성 향상에 도움이 될 수 있을 것으로 판단한다.

Keywords

References

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