A fuel batch of 1000 kg U is loaded in the reactor and it is discharged after 3 years irradiation. Assume that the fuel batch was irradiated with a constant power of 100MWt and the capacity factor during the irradiation is 80%. Additionally, it is assumed that only 235U is consumed during irradiation and its capture-to-fission ratio is 0.169. Please answer the following questions (Assume 200 MeV recoverable energy per fission) : (a) Calculate the specific power (in W/g) and specific burnup (in MWD/kg) of the fuel batch. (b) Calculate the number of consumed 235U atoms by irradiation. (c) What is the fraction burnup ( in % atom) ?