An enrichment plant produces uranium at uranium-235 from natural feed at

PHYSICS · Multi-part · Fermi University Physics · Nuclear Physics · Fission, fusion and nuclear energy · Fission, fusion and nuclear energy

Energy from Physics, Ch Running a reactor: kinetics, heat removal, feedback, burn-up and the fuel cycle

Problem

An enrichment plant produces uranium at xp=3.5%x_p = 3.5\% uranium-235 from natural feed at xf=0.711%x_f = 0.711\%, discarding tails at xt=0.20%x_t = 0.20\%. The value function is V(x)=(2x−1)ln⁡[x/(1−x)]V(x) = (2x-1)\ln\left[x/(1-x)\right], and the separative work per unit product mass is W/P=V(xp)+(T/P)V(xt)−(F/P)V(xf)W/P = V(x_p) + (T/P)V(x_t) - (F/P)V(x_f), where FF, PP and TT are feed, product and tails masses. ((a)) Find the feed mass required per kilogram of product, F/PF/P. ((b)) Find the separative work per kilogram of product, in SWU (kilogram separative work units).

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