The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2012
Filed:
Sep. 02, 2009
Young Woo Rhee, Daejeon, KR;
Dong Joo Kim, Daejeon, KR;
Kun Woo Song, Daejeon, KR;
Ki Won Kang, Daejeon, KR;
Jong Hun Kim, Daejeon, KR;
Keon Sik Kim, Daejeon, KR;
Jae Ho Yang, Daejeon, KR;
Young Woo Rhee, Daejeon, KR;
Dong Joo Kim, Daejeon, KR;
Kun Woo Song, Daejeon, KR;
Ki Won Kang, Daejeon, KR;
Jong Hun Kim, Daejeon, KR;
Keon Sik Kim, Daejeon, KR;
Jae Ho Yang, Daejeon, KR;
Korea Atomic Energy Research Institute, Daejeon, KR;
Korea Hydro & Nuclear Power Co., Ltd., Seoul, KR;
Abstract
A method for manufacturing an annular nuclear fuel pellet is provided. In the method, an annular nuclear fuel green compact whose lateral cross-section is a trapezoid is prepared. The thickness of the annular nuclear fuel green compact reduces along one direction of the central axis, and a green density of the nuclear fuel green compact increases along one direction of the central axis. The annular nuclear fuel green compact is sintered under a reducing gas atmosphere so that the annular nuclear fuel pellet is obtained. According to this method, the annular pellet which has uniform inner and outer diameters and small diametric tolerances along the pellet height is fabricated without grinding the pellet surfaces.