METHOD AND DEVICE FOR REMOVING SPENT NUCLEAR FUEL CLADDING Russian patent published in 2006 - IPC G21C19/37 G21F9/28 

Abstract RU 2284064 C2

FIELD: nuclear engineering.

SUBSTANCE: proposed method for removing spent nuclear fuel cladding includes following steps: cutting of spent fuel elements into fragments and separation of these fragments into part of fuel rods and part of spent nuclear fuel. Fuel elements are made of austenitic stainless steel. Cutting step lasts until main part of fragments measuring below 2 mm is obtained; separation step involves magnetic separation. Device implementing proposed method has cutting unit that functions to cut spent fuel rods into fragments. Mentioned cutting unit has rotary cutting tool incorporating parallel knives and shield that holds fragments until they are finely cut. Provision is made for magnetic separator that functions to magnetically separate fragments produced by cutting unit.

EFFECT: enhanced fragment separation efficiency.

5 cl, 5 dwg

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Authors

Jamada Sejja

Takeuti Masajuki

Koizumi Tsutomu

Sujama Kazumasa

Takami Kazuo

Khara Teruo

Dates

2006-09-20Published

2004-07-08Filed