1974-06-20
1976-06-22
Engle, Samuel W.
176 40, G21C 508
Patent
active
039649695
ABSTRACT:
An internal core tightener which is a linear actuated (vertical actuation motion) expanding device utilizing a minimum of moving parts to perform the lateral tightening function. The key features are: (1) large contact areas to transmit loads during reactor operation; (2) actuation cam surfaces loaded only during clamping and unclamping operation; (3) separation of the parts and internal operation involved in the holding function from those involved in the actuation function; and (4) preloaded pads with compliant travel at each face of the hexagonal assembly at the two clamping planes to accommodate thermal expansion and irradiation induced swelling. The latter feature enables use of a "fixed" outer core boundary, and thus eliminates the uncertainty in gross core dimensions, and potential for rapid core reactivity changes as a result of core dimensional change.
REFERENCES:
patent: 2719051 (1955-09-01), Hankins
patent: 2953406 (1960-09-01), Young
patent: 3091290 (1963-05-01), Clark
patent: 3549491 (1970-12-01), Johnson
patent: 3726761 (1973-04-01), Thorel et al.
Brynsvold Glen V.
Snyder, Jr. Harold J.
Cangialosi S. A.
Carlson Dean E.
Carnahan L. E.
Engle Samuel W.
Robertson F. A.
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