Just wanted to add that the mass leakage rate to remain under NRC limits would be 1.39e11 [g] / 55000 [yrs] = 2527 [kg/yr] = 7 [kg/day]
Put into that context, it might not be too absurd to think leakage would remain under NRC limits if only small cracks were present (assuming those limits are actually applicable to this scenario)
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Just wanted to add that the mass leakage rate to remain under NRC limits would be 1.39e11 [g] / 55000 [yrs] = 2527 [kg/yr] = 7 [kg/day]
Put into that context, it might not be too absurd to think leakage would remain under NRC limits if only small cracks were present (assuming those limits are actually applicable to this scenario)