Patent ID: 11929183
Assignee: CLEAN CORE THORIUM ENERGY LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC G  Y | IPC G

Claim 22:
23. A fuel bundle configured to be used in a PHWR, the fuel bundle comprising:
a plurality of fuel pins, each of said plurality of fuel pins comprising:
a sealed tube, and
a plurality of fuel pellets disposed inside the sealed tube, the plurality of fuel pellets each comprising thorium and uranium fuel,
wherein a fuel composition of each of the fuel pellets is between 55 and 90 wt % thorium,
wherein the fuel composition of each of the fuel pellets is between 10 and 45 wt % uranium,
wherein 235U enrichment of the uranium is between 10.5% and 20%,
wherein the fuel composition of at least one of the plurality of fuel pins differs from the fuel composition in at least one other of the plurality of fuel pins,
wherein the fuel bundle is shaped and configured to be used in a PHWR,
wherein the plurality of fuel pins comprise:
an inner fuel pin comprising a central fuel pin,
a first ring of fuel pins disposed radially outwardly from the inner fuel pin, and
a second ring of fuel pins disposed radially outwardly from the first ring of fuel pins,
wherein a thorium weight percentage of the fuel composition of the inner fuel pin is lower than a thorium weight percentage of the fuel composition of each of the second ring fuel pins,
wherein the fuel composition of the inner fuel pin has an equal or lower wt % thorium content than in each of the first ring fuel pins, and
wherein the fuel composition of each of the first ring fuel pins has a lower wt % thorium content than in each of the second ring fuel pins.