Model Support for an Out-Reactor-Instrumented-Defected-Fuel-Experiment to Validate the RMC Fuel Oxidation Model
32nd Annual CNS Conference - 2011 June 05-08


Presented at:
32nd Annual CNS Conference
2011 June 05-08
Location:
Niagara Falls, Canada
Session Title:
Fuel, Spent Fuel, Decommissioning and the Environment

Authors:
Aaron Quastel (Royal Military College of Canada)
Emily Corcoran (Royal Military College of Canada)
Brent Lewis (Royal Military College of Canada)
Cathy Thiriet (AECL - Chalk River Laboratories)
Gordon Hadaller (Stern Laboratories Inc)
  

Abstract

An out-reactor fuel oxidation experiment with controlled parameters is being planned to provide data for validation of the Royal Military College (RMC) mechanistic fuel oxidation model. In support of this work, fuel oxidation 2D r-q and 3D models are presented. The 2D r-q  model with radial cracks provides the radial temperature distribution in the test fuel element and also provides heating power information. The 3D model with radial cracks and a pellet-pellet gap under a defected sheath indicate that an oxygen stoichiometry deviation of 0.057 could result within one week of heating a defected UO2 fuel element with a 5-mm2 sheath defect.

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