CARTRIDGE FOR SPENT FUEL ASSEMBLY Russian patent published in 2010 - IPC G21F5/08 

FIELD: power engineering.

SUBSTANCE: invention relates to cartridge, where defect bundle of fuel elements (FEB) of spent fuel assembly (SFA) is placed for temporary storage in spent fuel pond and further dry storage. Concept of the invention is as follows: cartridge for spent fuel assembly comprises cylindrical body with bottom and cover. Defect bundle of fuel elements is placed in body. Height of cartridge body makes it possible for the grip to have access to power grid of fuel elements bundle. Spring is installed in cartridge cover. Spring provides for fixation of fuel elements with various length in cartirdge. Labyrinth channels are arranged in bottom and cover, making it possible to fill and drain inner cavity water as cartridge is installed into spent fuel pond for temporary storage. Labyrinth channels prevent spillage of fuel particles from cartridge and make it possible to dry fuel elements bundle. Autonomous system of cartridge cover lock opening is provided on cartridge body neck.

EFFECT: invention makes it possible to install defect fuel elements bundle in cartridge, to temporarily place cartridge into pond, to conduct drying after withdrawal from spent fuel pond, and to provide for monitoring of bundles in process of long-term storage.

4 cl, 2 dwg