Nuclear fuel rack lateral restraint

Details Nuclear fuel rack lateral restraint Nuclear fuel rack lateral restraint

1977-03-18

1979-05-01

Anderson, Bruce C.

Radiant energy

Radiation controlling means

Shielded receptacles for radioactive sources

176 87, 176 76, G21F 500

Patent

active

041526023

ABSTRACT:
A lateral restraint device for nuclear fuel racks which can accommodate differential thermal expansion between the racks and a containing enclosure. The restraint includes a piston, movable within a cylinder, joined to one or more support pads which contact the wall of the enclosure. A spring is also provided within the cylinder to act upon the piston. The piston is sized to provide a predetermined clearance or opening allowing controlled liquid flow into the cylinder. The piston can be held in a given position within the cylinder with the spring compressed to facilitate installation onto the side of a fuel rack, and subsequently positioned by the expanded spring. Relatively small differential expansion loads are accommodated by the moving piston and spring, while large loads, such as those imposed by a seismic occurrence, are resisted by the hydraulic fluid within the cylinder.

REFERENCES:
patent: 3206374 (1965-09-01), Lemesle et al.
patent: 3248299 (1966-04-01), Junkermann et al.
patent: 3720581 (1973-03-01), Kaser
patent: 3853703 (1974-12-01), Anthony et al.
patent: 3987860 (1976-10-01), Jabsen

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