DEVICE FOR COLLECTION OF SPILT SPENT NUCLEAR FUEL PELLETS Russian patent published in 2015 - IPC G21C19/32 

FIELD: power industry.

SUBSTANCE: invention refers to devices for safety ensuring devices when transferring spent fuel assemblies of a VVER 1000 reactor from transport covers to storage covers and is intended to be used in water-filled storages of spent nuclear fuel as an emergency tool. A collection device of spilt spent nuclear fuel pellets includes a bar in the lower part of which a provision is made for a collector with an open lower part in which a soft elastic material is arranged, above which a displacer is installed, which is connected to a stock located inside the bar. In the displacer there are holes in which holders included in the soft elastic material are installed with a gap and attached to the collector. Scriptural plasticine is used as a soft elastic material. A net incorporated into the soft elastic material is attached with threads to the holders in the lower part. Total breaking force of threads does not exceed movement force of the displacer with the stock. The lower surface of the soft elastic material is located above the lower end face of the collector by 0.2-0.3 of diameter of a pellet at collection of non-destructed pellets and flush with the lower end face of the collector at collection of the destructed ones.

EFFECT: improvement of the device.

5 cl, 3 dwg