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1. (WO2019050701) COMPOSITE FUEL WITH ENHANCED OXIDATION RESISTANCE
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Pub. No.: WO/2019/050701 International Application No.: PCT/US2018/047954
Publication Date: 14.03.2019 International Filing Date: 24.08.2018
IPC:
G21C 3/62 (2006.01)
G PHYSICS
21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
C
NUCLEAR REACTORS
3
Reactor fuel elements or their assemblies; Selection of substances for use as reactor fuel elements
42
Selection of substances for use as reactor fuel
58
Solid reactor fuel
62
Ceramic fuel
Applicants:
WESTINGHOUSE ELECTRIC COMPANY LLC [US/US]; 1000 Westinghouse Drive Suite 141 Cranberry Township, Pennsylvania 16066, US
Inventors:
LAHODA, Edward J.; US
SHAH, Hemant; US
XU, Peng; US
CAI, Lu; US
Agent:
SPADACENE, Joseph C.; US
COLDREN, Richard J.; US
CARNICELLA, Joseph R.; US
Priority Data:
15/695,32305.09.2017US
Title (EN) COMPOSITE FUEL WITH ENHANCED OXIDATION RESISTANCE
(FR) COMBUSTIBLE COMPOSITE À RÉSISTANCE À L'OXYDATION AUGMENTÉE
Abstract:
(EN) An improved nuclear fuel that has enhanced oxidation resistance and a process for making it are disclosed. The fuel comprises a composite of U235 enriched U3Si2 particles and an amount less than 30% by weight of UO2 particles positioned along the surface of the U3Si2 particles. The composite may be compressed into a pellet form. The process comprises forming a layer of UO2 on the surface of U3Si2 particles, either by exposing U3Si2 particles to an atmosphere of up to 15% oxygen by volume dispersed in an inert gas for a period of time and at a temperature sufficient to form UO2 at the U3Si2 particle surface, or by mixing U3Si2 particles with an amount up to 30% by weight of UO2 particles.
(FR) L'invention concerne un combustible nucléaire perfectionné qui présente une résistance à l'oxydation augmentée, et son procédé de fabrication. Le combustible comprend un composite de particules de U3Si2 enrichies en U235 et une quantité inférieure à 30 % en poids de particules UO2 placées le long de la surface des particules U3Si2. Le composite peut être comprimé sous forme de granulés. Le procédé consiste à former une couche de UO2 sur la surface de particules U3Si2, soit par exposition de particules U3Si2 à une atmosphère allant jusqu'à 15 % d'oxygène par volume dispersé dans un gaz inerte pendant une durée et à une température suffisantes pour former UO2 au niveau de la surface de particule U3Si2, ou par mélange des particules U3Si2 avec une quantité allant jusqu'à 30 % en poids de particules UO2.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)