Patent Number: 
Section: claims

1. A nuclear power plant comprising:a reactor;a reactor coolant system;a generator powered by the reactor coolant system;an emergency core cooling system, the emergency core cooling system including a water source, a pump having a pump inlet receiving water from the water source and a pump outlet providing the water to the reactor coolant system, and a nanoparticle supply containing nanoparticles, the nanoparticle supply having a supply outlet between the pump and the water source, the nanoparticles entering the emergency core cooling system at the supply outlet when released from the nanoparticle supply. 2. The nuclear power plant as recited in claim 1 wherein the supply outlet is at the pump inlet. 3. The nuclear power plant as recited in claim 1 wherein the pump is a high-pressure pump. 4. The nuclear power reactor as recited in claim 3 wherein the pump outlet connects to the reactor coolant system downstream of the generator and upstream of the reactor. 5. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply includes a nanofluid. 6. The nuclear power plant as recited in claim 1 wherein the pump is a low-pressure pump. 7. The nuclear power plant as recited in claim 1 wherein the emergency core cooling system includes a heat exchanger, the pump outlet being connected to the heat exchanger. 8. The nuclear power plant as recited in claim 1 wherein the emergency core cooling system includes a second pump, and further comprising a second nanoparticle supply having a second supply outlet between the second pump and the water source. 9. The nuclear power plant as recited in claim 1 wherein the water source is a water storage tank. 10. The nuclear power plant as recited in claim 1 wherein the water source is a containment sump. 11. The nuclear power plant as recited in claim 1 wherein the water source is a containment sump and a water storage tank. 12. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply is ZrO2. 13. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply is C. 14. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply is Al2O3. 15. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply is SiO2. 16. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply is Fe3O4. 17. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply is Cu. 18. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply is CuO. 19. The nuclear power plant as recited in claim 1 wherein the nanoparticle supply is one of ZrO2, C, Al2O3, SiO2, Fe3O4, Cu and CuO. 20. A nuclear power plant comprising:a reactor;a reactor coolant system;a generator powered by the reactor coolant system; andan emergency core cooling system having:an accumulator having an accumulator outlet exiting in the reactor coolant system and a first nanoparticle supply having a supply outlet exiting into the accumulator;a high pressure source of water including a first water source, a high pressure pump coupled to the first water source, and a second nanoparticle supply having a supply outlet between the high pressure pump and the first water source; anda low pressure source of water including a second water source, a low pressure pump coupled to the second water source, and a third nanoparticle supply having a supply outlet between the low pressure pump and the second water source. 21. The nuclear power plant as recited in claim 20 wherein the first, second and third nanoparticle supplies provide a nanofluid. 22. The nuclear power plant as recited in claim 21 wherein the first, second and third nanoparticle supplies provide a pressurized gas containing nanoparticles. 23. The nuclear power plant as recited in claim 20 wherein the nanoparticle supply is ZrO2. 24. The nuclear power plant as recited in claim 20 wherein the nanoparticle supply is C. 25. The nuclear power plant as recited in claim 20 wherein the nanoparticle supply is Al2O3. 26. The nuclear power plant as recited in claim 20 wherein the nanoparticle supply is SiO2. 27. The nuclear power plant as recited in claim 20 wherein the nanoparticle supply is Fe3O4. 28. The nuclear power plant as recited in claim 20 wherein the nanoparticle supply is Cu. 29. The nuclear power plant as recited in claim 20 wherein the nanoparticle supply is CuO. 30. The nuclear power plant as recited in claim 20 wherein the nanoparticle supply is one of ZrO2, C, Al2O3, SiO2, Fe3O4, Cu and CuO.