Conference Proceedings Paper
CNSC - IFB LOSS OF COOLING SEVERE ACCIDENT WORK
13th International Conference on CANDU Fuel - 2016 Aug. 15-18
W. Grant (CNSC)
Fukushima caused renewed international interest in the safety of spent fuel wet storage. While CNSC staff’s position remains that CANDU spent fuel wet storage is safe and that a loss of cooling accident has a sufficiently slow progression that operator intervention can be assured, CNSC staff has as a result of the Fukushima accident undertaken efforts to better understand the safety margins that exist in the unlikely case of a severe accident. This paper will discuss the hypothetical IFB severe accident and important phenomena, the recently installed fuel bay design improvements, the parallel domestic and international PIRTs, CNSC staff studies and how these activities will support staff’s plan to develop a dedicated irradiate fuel bay modeling code for severe accidents in order to investigate the existing safety margins.
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