Hydraulic latch scram release mechanism

Details Hydraulic latch scram release mechanism Hydraulic latch scram release mechanism

1977-07-25

1980-02-05

Engle, Samuel W.

176 86R, G21C 708

Patent

active

041871456

ABSTRACT:
A poison bundle release mechanism within a safety assembly of a liquid metal nuclear reactor. A baffle consisting of a plate with recesses in fluid communication with low pressure coolant is formed in the upper portion of the safety assembly. A plug attached to the upper end of the poison bundle fits snugly against the recesses and is held up against the plate by the coolant pressure difference acting on the lower and upper sides of the plug. A conduit and valve arrangement is provided within the plug whereby the actuation of the valve permits high pressure coolant to enter the recessed region, reducing the pressure difference across the plug and producing rapid disengagement thereof from the plate.

REFERENCES:
patent: 3031397 (1962-04-01), Fortescue et al.
patent: 3154472 (1964-10-01), Shannon
patent: 3264952 (1966-08-01), Winders
patent: 3462345 (1969-08-01), Jabsen
patent: 3533912 (1970-10-01), Dempsey
patent: 3535206 (1970-10-01), Germer
patent: 3575804 (1971-04-01), Ripley
patent: 3933581 (1976-01-01), McKeehan et al.
patent: 3957577 (1976-05-01), Treshou
patent: 4019954 (1977-04-01), Giordano et al.
Memorandum by L. E. Minnick of EPRI, dated 4/29/76.
ANS Transactions, vol. 16, 10/74, pp. 275-276.

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