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Polymer testing v.58, 2017년, pp.135 - 141   SCI SCIE SCOPUS
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Performance of metal and polymeric O-ring seals during beyond-design-basis thermal conditions

Yang, Jiann C. (Fire Research Division, Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA ) ; Hnetkovsky, Edward (Fire Research Division, Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA ) ; Rinehart, Doris (Fire Research Division, Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA ) ; Fernandez, Marco (Fire Research Division, Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA ) ; Gonzalez, Felix (U.S. Nuclear Regulatory Commission, Rockville, MD 20852, USA ) ; Borowsky, Joseph (U.S. Nuclear Regulatory Commission, Rockville, MD 20852, USA ) ;
  • 초록  

    Abstract This paper summarizes the small scale thermal exposure test results of the performance of metallic and polymeric O-ring seals typically used in radioactive material transportation packages. Five different O-ring materials were evaluated: Inconel/silver, ethylene-propylene diene monomer (EPDM), polytetrafluoroethylene (PTFE), silicone, butyl, and Viton. The overall objective of this study is to provide test data and insights to the performance of these O-ring seals when exposed to beyond-design-basis temperature conditions due to a severe fire. Tests were conducted using a small-scale stainless steel pressure vessel pressurized with helium to 2 bar or 5 bar at room temperature. The vessel was then heated in an electric furnace to temperatures up to 900 °C for a pre-determined period (typically 8 h–9 h). The pressure drop technique was used to determine if leakage occurred during thermal exposure. Out of a total of 46 tests performed, leakage (loss of vessel pressure) was detected in 13 tests.


  • 주제어

    Cask .   Shipping package .   Fires .   Beyond-design-basis conditions .   Seals .   Spent fuels.  

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