Fuel Defect Localization Using Delayed Neutron Monitoring System Bruce A 2011 to 2013
34th Annual CNS Conference - 2013 June 09-12

Presented at:
34th Annual CNS Conference
2013 June 09-12
Toronto, Canada
Session Title:
Operations & Maintenance

Jennifer Stark (Bruce Power)
Andrew Ertel (Bruce Power)


The delayed neutron monitoring system (DNMS) is the primary system used to locate defective fuel bundles in reactors on the Bruce site.  Recent system upgrades at Bruce A and the refurbishment and restart of two reactor units have created minor challenges.  The data analysis methods used for Units 3 to 8 could not be directly applied to the scan data from the refurbished units due to lack of historical data and initial scans being performed after fuel defects were present in the cores.  Work continues to better utilize the DNMS data to locate channels containing defect fuel.

Individual Conference-Paper Copies (Electronic Where Available):

  • For CNS members, the first 5 copies per calendar year are free, and additional copies are $10 each.
  • For non-members, the price is $25 for the first Conference-paper copy in a request, and $10 each for additional copies of papers in the same conference and in the same request.
  • Contact the CNS office to order reprints.