公开(公告)号：WO2009134497A3

公开(公告)日：2009-11-05

申请号：PCT/US2009/033131

申请日：2009-02-05

Applicant: WESTINGHOUSE ELECTRIC COMPANY LLC

Inventor： HONE, Michael, J. ,  LONG, Carroll, J., Jr. ,  POMIRLEANU, Radu ,  GOLDENFIELD, Mark, P.

IPC: G21C7/10

Abstract: The present invention provides a gray rod control assembly (GRCA) containing an improved neutron absorber comprised of a porous matrix of refractory metal infused with a neutron absorbing metal or metal alloy for a nuclear reactor The reactor has a plurality of fuel assemblies, including numerous elongated fuel rods supported in an organized array by substantially transverse gπds, and a plurality of guide thimbles disposed through the support grids and along the fuel rods The ORCA includes a spider assembly structured to control insertion of gray rod assemblies within the thimbles of the fuel assembly, thereby controlling the rate of power produced by the reactor Delta-power of the reactor is improved by the relatively small percentage of neutron absorbing metal infused in the porous matrix of the refractory metal of the neutron absorber and by distributing the neutron absorber in segments among a plurality of rods of the GRCA

公开(公告)号：WO2019045970A1

公开(公告)日：2019-03-07

申请号：PCT/US2018/045695

申请日：2018-08-08

Applicant: WESTINGHOUSE ELECTRIC COMPANY LLC

Inventor： LAHODA, Edward J. ,  BOYLAN, Frank A. ,  LAM, Ho Q. ,  NISSLEY, Mitchell E. ,  SCHNEIDER, Raymond E. ,  OELRICH, Robert L. ,  RAY, Sumit ,  POMIRLEANU, Radu ,  KAROUTAS, Zeses ,  HONE, Michael J.

IPC: G21C7/08 ,  C23C30/00

CPC classification number: G21C3/07 ,  G21C1/08 ,  G21C3/328 ,  G21C7/10 ,  G21C7/117 ,  G21C7/24 ,  G21C11/08

Abstract: A high temperature control rod (22) for a nuclear fuel assembly (10) is described herein that includes a neutron absorbing material (24) 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 (30) having a melting point greater than 1500 °C. The cladding material (30) is selected from the group consisting of silicon carbide, zirconium, a zirconium alloy, tungsten, and molybdenum. The absorbing material (24) is selected from the group consisting of Gd 2 O 3 Ir B 4 C, Re, and Hf. The metal cladding (30) or the absorbing material (24) may be coated with an anti-oxidation coating (26) of Cr with or without a Nb intermediate layer (28).

公开(公告)号：WO2012012071A1

公开(公告)日：2012-01-26

申请号：PCT/US2011/041319

申请日：2011-06-22

Applicant: WESTINGHOUSE ELECTRIC COMPANY LLC

Inventor： LAHODA, Edward, J. ,  POMIRLEANU, Radu ,  RAY, Sumit ,  HALLSTADIUS, Lars

IPC: G21C3/00

CPC classification number: G21C3/60 ,  Y02E30/38

Abstract: The present invention relates to nuclear fuel compositions including triuranium disilicide. The triuranium disilicide includes a uranium component which includes uranium-235. The uranium-235 is present in an amount such that it constitutes from about 0.7% to about 20% by weight based on the total weight of the uranium component of the triuranium disilicide. The nuclear fuel compositions of the present invention are particularly useful in light water reactors.

Abstract translation: 本发明涉及核燃料组合物，包括三硅化二锡。 三硅化三铝包括铀-235的铀成分。 铀-235存在的量使得其占三取代三硅化铀的铀组分的总重量的约0.7重量％至约20重量％。 本发明的核燃料组合物在轻水反应器中特别有用。