Rabin & Berdo, P.C.
Structure of top nozzle for nuclear fuel assembly
Disclosed herein is a joint structure between a top nozzle and a guide thimble. The joint structure includes an outer guide post, an inner-extension tube head, an inner-extension tube body, a wedge and the guide thimble. The outer guide post is provided with an external thread formed on a lower end thereof. The inner-extension tube head includes an annular retaining part formed on an upper end thereof. An internal thread is formed on a medial portion of the inner-extension tube head. An external thread is formed on each of upper and lower ends of the inner-extension tube body. A stop protrusion is provided under a lower end of the wedge. The wedge is welded to the inner-extension tube body after the top nozzle has been joined with the guide thimble. A stop protrusion receiving depression is formed in the guide thimble.
KEPCO NUCLEAR FUEL CO., LTD.
G Y G G
G21C Y02E G21C G21C
inventional additional inventional inventional
Kyu-Tae Il-Kyu Kyeong-Lak Seong-Ki Shin-Ho Joon-Kyoo Kyong-Bo Jin-Sun Ki-Sung Jung-Min Nam-Gyu Gyu-Cheol
Kim Kim Jeon Lee Lee Park Eom Kim Choi Suh Park Shin