NUCLEAR FUEL SINTERED BODY HAVING EXCELLENT IMPACT RESISTANCE

Title:

NUCLEAR FUEL SINTERED BODY HAVING EXCELLENT IMPACT RESISTANCE

Document Type and Number:

WIPO Patent Application WO/2019/146857

Kind Code:

A1

Abstract:

The present invention relates to a sintered body in a cylindrical shape manufactured by UO2 powder, the sintered body consisting of a dish (10) having both ends of a cylindrical shape formed by spherical grooves, wherein the centers of the both end surfaces have a constant curved surface; a shoulder (20) circularly formed along the rim of the dish (10) having a constant width, which is perpendicular to the cylindrical shape; and a chamfer (30) formed as a chamfered edge along the rim of the shoulder (20). Provided is a nuclear fuel sintered body having excellent impact resistance, wherein the width (SW) of the shoulder (20) is 0.20 mm to 0.80 mm and the angle between the chamfer (30) and the horizontal plane is 14° to 18°, thereby enhancing the impact strength of the sintered body as the shape of the sintered body is improved, so as to minimize the Pellet-Clad Mechanical Interaction (PCMI) damage by means of a missing pellet surface (MPS).

Inventors:

NA YEON-SOO (KR)
CHOI MIN YOUNG (KR)
LIM KWANG-YOUNG (KR)
LEE SEUNG-JAE (KR)
JUNG TAE SIK (KR)
MOK YONG KYOON (KR)
YOO JONG SUNG (KR)

Application Number:

PCT/KR2018/008636

Publication Date:

August 01, 2019

Filing Date:

July 30, 2018

Export Citation:

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Assignee:

KEPCO NUCLEAR FUEL CO LTD (KR)

International Classes:

G21C3/04; C04B35/10; C04B38/06

Foreign References:

US9053830B2	2015-06-09
KR20110070984A	2011-06-27
JP2000206282A	2000-07-28
KR20000019009A	2000-04-06
KR20100079423A	2010-07-08
KR100982664B1	2010-09-17

Other References: