The core of a reactor rated at 3200 MWt full power contains an initial fuel loading of 80 metric tons. The reactor operates 540 calendar days between refuelings. If the reactor power as a fraction of full power varies with time according to the function sin(πt/T), where t is the elapsed time in days counting from the cycle startup, and T = 540 days, what is (a) the capacity factor for the cycle and (b) the cycle burnup in MWd/kg?
The core of a reactor rated at 3200 MWt full power contains an initial fuel loading...
At the start of a reactor cycle following a reload refueling, a fuel assembly has a burnup of 22.4 MWd/kg. The fuel assembly averages a power of 94% that of the core average fuel assembly power over the 426 calendar days of cycle operation. At the end of the cycle, the fuel assembly’s burnup is 36.7 MWd/kg. The reactor is rated at 2800 MWt full power. It contains 157 fuel assemblies, each with an initial fuel loading of 500 kg....
Assuming fission-product decay power must fall to 15 MWt before refueling can begin, estimate the minimum cooling time in days for fuel irradiated to t0=2 years required for a Westinghouse reactor with a full power of 3411 MWt. Use Eq. 2-10 from Chapter 2 to estimate the decay heat power. (Note that for 0 < t < 1 week, the term is constant and equal to 0.0275.) Eq 2-10: P(t)/Po = (6.6x10-2)(t-0.2 - (t + to)-0.2)