Before the tsunami struck the Fukushima Daiichi Nuclear Power Station the reacto

Question

Before the tsunami struck the Fukushima Daiichi Nuclear Power Station the reactors were shut down. However, due to the intense radiation levels of the nuclear fuel, the reactors continued to release energy at a rate that on the first day was an average of 25 MW. The operators pumped seawater, initially 10 degrees celsius into the reactors. If they managed to get 450 tonnes (1 tonne = 1000kg) of water into the reactors, how long would it take to reach boiling point? (Use c = 4186 j/(kg X degrees celsius) as the specific heat of seawater)

Explanation / Answer

Q= m c Delta T

P*t= m c Delta T

25*10^6*t=450*1000*4186*90

t=6871.74 seconds

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