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Study on Characteristics of Sliding Support for Fuel Rod

이동 가능한 연료봉 지지부의 특성 고찰

  • Received : 2010.07.27
  • Accepted : 2010.11.18
  • Published : 2011.02.01

Abstract

A spacer grid assembly is one of the most important structural components of the nuclear fuel assembly of a pressurized water reactor (PWR), and it affects the performance of the fuel assembly. The primary design requirement is that the mechanical integrity of the fuel rod should be maintained by the spacer grid assembly during the operation of the reactor. It was known that fretting damage to the fuel rod can be reduced by adjusting the relative moving displacement between the fuel rod and its support. In this study, we used the finite element method to evaluate the characteristics of a sliding support designed to reduce fretting damage of fuel rods.

Keywords

Sliding Fuel Rod Support;Nuclear Fuel Assembly;Spacer Grid Assembly;Fretting Wear;Flow-Induced Vibration(FIV);Fuel Rod;Fuel Rod Support Integrity;PWR

Acknowledgement

Supported by : 한국원자력연구원

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