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公开(公告)号：WO2018197105A1
公开(公告)日：2018-11-01
申请号：PCT/EP2018/056716
申请日：2018-03-16
Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB
Inventor： MIDDLEBURGH, Simon Charles , HALLSTADIUS, Lars
Abstract: A fuel assembly for a nuclear reactor, a fuel rod(4) of the fuel assembly, and a ceramic nuclear fuel pellet (10) of the fuel rod are disclosed. The fuel pellet comprises a first fissile material of UB 2 , The boron of the UB 2 is enriched to have a concentration of the isotope 11 B that is higher than for natural B.
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公开(公告)号：WO2019243095A1
公开(公告)日：2019-12-26
申请号：PCT/EP2019/065061
申请日：2019-06-10
Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB
Inventor： MIDDLEBURGH, Simon Charles , PUIDE, Mattias , HALLSTADIUS, Lars , BLAIR, Paul , LIMBÄCK, Magnus
IPC: G21C3/62
Abstract: A uranium oxide fuel pellet (2) comprising an inner region (4) and an outer rim region (6) about the inner region (4), and that the fuel pellet (2) is cylindrical and the inner region (4) and outer rim region (6) are coaxial cylindrical regions.The outer rim region (6) has an excess of oxygen in comparison to the inner region (4), wherein high burnup structure (HBS) formation will be suppressed or delayed. Preferably, the excess oxygen is obtained by a chemical treatment by immersing the pellet in hydrogen peroxide (H 2 O 2 ) or potassium permanganate (KMnO 4 ) in solution.
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公开(公告)号：WO2018206234A1
公开(公告)日：2018-11-15
申请号：PCT/EP2018/059653
申请日：2018-04-16
Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB
Inventor： MIDDLEBURGH, Simon Charles , PUIDE, Mattias
Abstract: A nuclear fuel pellet (10) for a nuclear reactor is disclosed. The pellet comprises a metallic matrix (20) and ceramic fuel particles (21) of a fissile material dispersed in the metallic matrix. The metallic matrix is an alloy consisting of the principle elements U, Zr, Nb and Ti, and of possible rest elements. The concentration of each of the principle elements in the metallic matrix is at the most 50 molar-%.
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