SPENT FUEL STORAGE Russian patent published in 2015 - IPC G21F9/00 

FIELD: power industry.

SUBSTANCE: storage includes water basin 1 in the side walls of which there are return cooling tubes 2. At the bottom of basin 1 there laid are hollow disks 3 with perforation of microholes in the upper surface of disks and a conical mounting seat in the centre of disks 3, to which compressed air pipeline 4 is connected. Above hollow disks 3 there located are cylindrical holders 5 attached to each other and provided with holes 6 for water passage in the lower part of holders 5; fuel assemblies 7 are arranged in cylindrical holders 5. Water in basin 1 fully covers fuel assemblies 7 and upper holes of return cooling tubes 2. A loading mechanism performs positioning of a grab as per coordinates of centres of cylindrical holders 5 and performs loading of fuel assembly 7 to the chosen cylindrical holder 5. Walls of cylindrical holders 5 are attached to each other and form a spatial honeycomb structure.

EFFECT: improving use efficiency of basin volume due to increasing storage density of spent fuel; reducing the amount of water in the basin per unit weight of the stored spent fuel.

2 dwg