TROUBLE SHOOTING LEAKAGE ISSUES IN A DRY STORAGE CONTAINER (DSC)


37th Annual CNS Conference - 2017 June 04-07

Presented at:
37th Annual CNS Conference
2017 June 04-07
Location:
Niagara Falls
Session Title:
1B4 - Health, Environment & Spent Fuel / Waste Management (I)

Authors:
J. Carmichael (OPG)
T. Iqbal (OPG)
C. Wang (OPG)
J.A. Sato (OPG)
  

Abstract

TThe helium leak rate test failed for Dry Storage Container (DSC) BW5149 at Darlington Waste Management Facility (DWMF) with a leak rate above the required acceptance criteria of 1 x 10-5 std cc/sec in November 2015.  A troubleshooting plan was developed using a Systematic Approach to Problem Solving (SATPS) methodology and is being presented in this paper.  The troubleshooting plan was applied to the DSC in question.  As a last step of the troubleshooting plan, the DSC was pressurized with helium to less than 5 psig, and a helium leak search (sniffing) test was performed, resulting in a successful identification of leakage location.  This is the first time a DSC has been successfully pressurized to identify a leak location.

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