A Study on Fusion Welding Strength of PE pipe

PE배관의 융착 강도에 관한 연구

  • Jun, Hung-Won (Department of Safety Engineering, Seoul National University of Technology) ;
  • Kim, Yong-Soo (Department of Safety Engineering, Seoul National University of Technology) ;
  • Tae, Soon-Ho (Department of Safety Engineering, Seoul National University of Technology)
  • 전흥원 (서울산업대학교 안전공학과) ;
  • 김용수 (서울산업대학교 안전공학과) ;
  • 태순호 (서울산업대학교 안전공학과)
  • Published : 2002.06.30

Abstract

At present the Polyethylene piping, on supporting LNG is widely used because of it's disposition which are anti-corrosion flexible and so on. However, it has a few kinds of risk which are the possibility of piping leak, the character of easily corroded and so on. For giving solution, this study is intended to experiment the intension of the PE pipe after melted and when it is melting, the condition which are temperature and pressure is changed. the melting condition in temperature and pressure is adapted identically. After melting, it's joint is tested as intension. The result is that the effect of temperature in intension is more effective than pressure. In $210^{\circ}C$, $20kg/cm^{2}$ condition, the melting intension has the highest. Compare to the Butt melting joint and the Saddle melting joint, the former was $214kg/cm^{2}$ and the latter was $50kg/cm^{2}(bead\;2{\sim}3mm)$ and $73kg/cm^{2}(bead\;5{\sim}7mm)$. It means that the Butt melting method has more intensive than saddle. Consequently, the result shows that the liability and safety when pipe melting method is used will improve in pipe installation.

References

  1. 한국가스안전공사, 고압가스통계, 1999
  2. 한국가스안전공사, 가스사고연감, 1999
  3. L. K. Donald and L.L. Robert, Natural Gas Engineering Production and Storage, McGraw-Hill, New York, 1990
  4. 대림산업(주), Polyethlene 가스관, System, 1995
  5. 박승국, 폴리에틸렌수지, 대광서림, 1996
  6. R. M. Ogorkiewicz, Properties of Thermoplastics, Willey Interscience, London, 1970
  7. F. H. Andrews, Fracture in Polymer, Oliver and Boyd, 1968
  8. American Gas Association, A.G.A Plastic Pipe Manual for Gas Service, 1995
  9. Mr. A. Hillersborg, Criteria for visual judging of heat fused PEM pipes, 1989
  10. Gas Research Institute, Defect Discrimination in Heat-Fused Polyethylene Pipe joints, 1983
  11. Gas Research Institute, User's Guide on Butt Heat Fusion joining of Polyethylene Gas Pipes Topical Report, 1986
  12. 한국가스안전공사, 가스관계법령집, 1999
  13. KS M 3514, 가스용 폴리에틸렌관, 1995
  14. John Wiley, Journal of Applied Polymer, Vol. 38, pp. 1147-162, 1989
  15. 한국가스안전공사, PE시공관리, 1994
  16. KS M 3006, 플라스틱 인장성 측정시험, 1993
  17. KS M 3012, 폴리에틸렌 시험방법, 1996