Westinghouse Electric Company LLC

Frank A Boylan

Edward Jean Lahoda

Peng Xu

Radu O Pomirleanu

Sumit Ray

Robert L Oelrich

Michael J Hone

Ho Q Lam

Mitchell E Nissley

Zeses E Karoutas

Jonathan Wright

Raymond E Schneider

Fausto Franceschini

Zeses Karoutas

Hemant Shah

Javier Romero

A control rod for a nuclear fuel assembly is described herein that includes a neutron absorbing material having a melting point greater than 1500° C. that does not form a eutectic with a melting point less than 1500° C., and may further include a cladding material having a melting point greater than 1500° C. The cladding material is selected from the group consisting of silicon carbide, zirconium, a zirconium alloy, tungsten, and molybdenum. The absorbing material is selected from the group consisting of GdO, Ir, BC, Re, and Hf. The metal cladding or the absorbing material may be coated with an anti-oxidation coating of Cr with or without a Nb intermediate layer.

Control rods for light water reactors

A control rod for a nuclear fuel assembly is described herein that includes a neutron absorbing material having a melting point greater than 1500&#xb0; C. that does not form a eutectic with a melting point less than 1500&#xb0; C., and may further include a cladding material having a melting point greater than 1500&#xb0; C. The cladding material is selected from the group consisting of silicon carbide, zirconium, a zirconium alloy, tungsten, and molybdenum. The absorbing material is selected from the group consisting of GdO, Ir, BC, Re, and Hf. The metal cladding or the absorbing material may be coated with an anti-oxidation coating of Cr with or without a Nb intermediate layer.

An improved, accident tolerant fuel for use in light water and lead fast reactors is described. The fuel includes a ceramic cladding, such as a multi-layered silicon carbide cladding, and fuel pellets formed from UN and from 100 to 10000 ppm of a boron-containing integral fuel burnable absorber, such as UBor ZrB.

High temperature ceramic nuclear fuel system for light water reactors and lead fast reactors

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Ellwood City, PA, United States of America

Frank A Boylan