Spacer Grid Assembly with Sliding Fuel Rod Support

삽입 및 이동 가능한 연료봉 지지부의 지지격자 형상

  • Received : 2009.12.23
  • Accepted : 2010.05.05
  • Published : 2010.07.01


A spacer grid assembly is one of the most important structural components of the nuclear fuel assembly of a Pressurized Water Reactor (PWR). A primary design requirement is that the fuel rod integrity be maintained by the spacer grid assembly during the operation of the reactor. In this study, we suggested a new spacer grid assembly having a fuel rod support, which is capable of sliding when the fuel rod vibrates due to flow-induced vibrations in the reactor. By adjusting the relative displacement between the fuel rod and its support, the proposed design will help in reducing fuel rod fretting damage.


Sliding Fuel Rod Support;Nuclear Fuel Assembly;Spacer Grid Assembly;Fretting Wear;Flow-induced Vibration;Fuel Rod;Fuel Rod Support Integrity;PWR


Supported by : 한국원자력연구원


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