[en] A PWR fuel cycle is proposed, with the purpose of eliminating weapons grade plutonium and degrading such plutonium to a proliferation resistance level. This Radkowsky Thorium-fuel Pu Incinerator cycle is based on retrofitability of core and assemblies to a Westinghouse type P^t. However the assembly is a seed-blanket unit in which the seed, fueled with a Pu/Zr alloy in a high moderator/fuel volume ratio, is supercritical, driving the subcritical blanket, loaded mainly with ThO₂, generating and burning in-situ U²³³. Blankets are loaded once every six years. Seed undergo the usual three-batch management, one third of all seeds replaced every year. The core generates about 1100 M We