Scram device having a multiplicity of neutron absorbing masses

Details Scram device having a multiplicity of neutron absorbing masses Scram device having a multiplicity of neutron absorbing masses

1977-06-10

1979-02-13

Behrend, Harvey E.

Valves and valve actuation

Rotary valves

Ball valve

251 1R, 251212, 176 36R, G21C 722

Patent

active

041394143

ABSTRACT:
An apparatus for holding, releasing, and resetting a multiplicity of neutron absorbing balls within a safety assembly of a liquid metal nuclear reactor comprising vertically hinged trap doors resting on the shoulders of a generally cylindrical release valve, the actuation of which disengages the doors, permitting the poison balls above the doors to drop into the core. In the reset mode of operation a platform is raised, lifting the balls from the bottom of the core and swinging the trap doors upward until the balls are above the door hinges. The release valve is reset and the platform is lowered to reset the doors against the valve shoulders. In the disclosed embodiment, the valve is operated by a self-actuated, temperature responsive scram mechanism.

REFERENCES:
patent: 3105033 (1963-09-01), Camac
patent: 3192123 (1965-06-01), Costes et al.
patent: 3377252 (1968-04-01), Knights
patent: 3733251 (1973-05-01), Gilbertson et al.

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