Rigorous Fitness-for-Service Case Development – Selective Defuelling Program
9th International Conference on CANDU® Maintenance - 2011 December 04-06


Presented at:
9th International Conference on CANDU® Maintenance
2011 December 04-06
Location:
Toronto, Canada
Session Title:
Industry Performance Special Session B1

Authors:
Jason Goldberg (Bruce Power)
  

Abstract

Bruce Unit 3 is life limited by fuel channel elongation.  In order to manage this degradation mechanism, an extensive fitness-for-service and safety case was prepared to operate with some fuel channels empty of fuel to stop the growth of the pressure tubes.  The regulatory approved safety case includes assessments of reactor physics, thermalhydraulics, nuclear safety, operations, fuel channel integrity, feeder integrity, engineering change and human factors.  This method has been successfully employed for various defuelled configurations since 2004. The success of this program has been instrumental in Bruce Unit 3 being able to meet and exceed its original target life post-Restart.

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