DOI QR코드

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Investigation on the thermal butt fusion performance of the buried high density polyethylene piping in nuclear power plant

  • Kim, Jong-Sung (Department of Nuclear Engineering, Sejong University) ;
  • Oh, Young-Jin (Power Engineering Research Institute, KEPCO E&C) ;
  • Choi, Sun-Woong (Department of Chemical Engineering and Nano-Bio Technology, Hannam University) ;
  • Jang, Changheui (Department of Nuclear & Quantum Engineering, KASIT)
  • 투고 : 2018.08.01
  • 심사 : 2019.02.01
  • 발행 : 2019.05.25

초록

This paper presents the effect of fusion procedure on the fusion performance of the thermal butt fusion in the safety class III buried HDPE piping per various tests performed, including high speed tensile impact, free bend, blunt notched tensile, notched creep, and PENT tests. The suitability of fusion joints and qualification procedures was evaluated by comparing test results from the base material and buttfusion joints. From the notched tensile test result, it was found that the fused joints have much lower toughness than the base material. It was also identified that the notched tensile test is more desirable than the high speed tensile impact and free bend tests presented in the ASME Code Case N-755-3 as a fusion qualification test method. In addition, with regard to the single low-pressure fusion joint performances, the procedure given by the ISO 21307 was determined to be better that the one specified in the Code Case N-755-3.

키워드

참고문헌

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피인용 문헌

  1. Measurement of Structural Performance of Fusion Weld with Change of Welding Parameters in High-Density Polyethylene vol.49, pp.6, 2021, https://doi.org/10.1520/jte20200273
  2. Structural Performance of Fusion Weld Based on Weld Parameters and Strain Rate in High-Density Polyethylene vol.50, pp.2, 2019, https://doi.org/10.1520/jte20210139