CANDU Reactor contains 70 kf og fissionable material

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The discussion focuses on calculating the fraction of 70 kg of Uranium fissioned in a CANDU reactor over 550 days, given a fission rate of 1.204 x 10^22 fissions/s. The calculations suggest that 5.7 x 10^29 fissions occur in that timeframe, equating to 225,376,210.5 grams of fissioned material. This result implies a fission percentage of 3219.66%, indicating an error in the initial fission rate assumption. The calculated energy output of approximately 400 GW raises further questions about the accuracy of the fission rate provided. The discussion highlights the need for revisiting the initial fission rate to resolve the discrepancies in the calculations.
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Homework Statement





Homework Equations



Working at a rate of 1.204 x 10^22 fissions/s, what fraction of that 70 kg mass of Uranium will be fissioned during the 550 days of fuel installation? (Fuel rods are replaced appx. every year and a half)

The Attempt at a Solution



1.20x10^22 fissions/s = 1.0368 fissions/day

550 days = 5.7x10^29 fissions

5.7x10^29 fissions = 225376210.5 grams

225376210.5 grams / 70 000 grams = 3219.66%. Which is incorrect.
 
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The initial value of 1.2x10^22 fissions/s can't be right. At ~ 200MeV/fission, this is about 400 GW.
 

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