Snubber assembly for a control rod drive

Details Snubber assembly for a control rod drive Snubber assembly for a control rod drive

1975-05-16

1978-04-04

Bentley, Stephen C.

Spring devices

Vehicle

Lever and nontorsion spring

176 36R, 176 38, 267126, G21C 708, G21C 900, F16F 918

Patent

active

040826104

ABSTRACT:
A snubber cartridge assembly is mounted to the nozzle of a control rod drive mechanism to insure that the snubber assembly will be located within the liquid filled section of a nuclear reactor vessel whenever the control rod drive is assembled thereto. The snubber assembly includes a piston mounted proximate to the control rod connecting end of the control rod drive leadscrew to allow the piston to travel within the liquid filled snubber cartridge and controllably exhaust liquid therefrom during a "scram" condition. The snubber cartridge provides three separate areas of increasing resistance to piston travel to insure a speedy but safe "scram" of the control rod into the reactor.

REFERENCES:
patent: 3562109 (1971-02-01), Bezold
patent: 3733251 (1973-05-01), Gilbertson
patent: 3762994 (1973-10-01), Kunzel
patent: 3822439 (1974-07-01), Wallin
patent: 3980519 (1976-09-01), Taft

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