Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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Design Consideration about Large Caliber Piping of Polyethylene Material

폴리에틸렌 소재의 대구경 배관 설계 고찰

  • Kim, Eung-Soo (Graduate School of University of Seoul, University of Seoul) ;
  • Yoon, Myong-O (Graduate School of University of Seoul, University of Seoul)
  • 김응수 (서울시립대학교 일반대학원) ;
  • 윤명오 (서울시립대학교 일반대학원)
  • Received : 2013.10.11
  • Accepted : 2013.12.06
  • Published : 2013.12.31
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Abstract

As the polyethylene of high strength and ductility stabilized chemically has been mass-produced, it is spreading widely as material of industrial piping and water service piping. Recently, High density polyethylene (HDPE) pipe has been used even in water supply system of plant as buried pipe instead of cast iron pipe in domestic, but HDPE pipe has a probability of occurrence of damage if plant design and operating conditions are not considered. As a result of reviewing with respect of system design engineering based on operating conditions and verification test results, the specific design criteria for the use of HDPE piping in fire water supply system need to be established because of the possibility of crack damage due to water hammer.

고강도/연성소재이면서 화학적으로 안정된 폴리에틸렌 소재가 배관으로 양산되면서 수도용 및 산업용으로 그 사용이 확산되고 있다. 최근에는 국내 플랜트에서도 기존 주철배관의 부식 누설 해소방안으로 고밀도 폴리에틸렌 배관이 사용되고 있는데, 각각의 플랜트 설계조건 및 운전조건을 적절히 고려하지 않을 경우 고밀도 폴리에틸렌 배관은 물리적인 손상이 유발될 수 있다. 폴리에틸렌 소재의 대구경 배관을 플랜트에 적용함에 있어 관련기준 및 설치 경험사례를 고찰한 결과, 수충격이 발생되는 환경에서 균열손상 가능성이 있어 폴리에틸렌 배관을 대구경 배관으로 사용시주의가 필요하다고 판단된다.

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References

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