Patent
1976-08-17
1978-09-19
Engle, Samuel W.
176 38, 176 40, G21C 1306
Patent
active
041151933
ABSTRACT:
A support system for nuclear reactor pressure vessels which can withstand all possible combinations of stresses caused by a postulated core disrupting accident during reactor operation. The nuclear reactor pressure vessel is provided with a flange around the upper periphery thereof, and the flange includes an annular vertical extension formed integral therewith. A support ring is positioned atop of the support ledge and the flange vertical extension, and is bolted to both members. The plug riser is secured to the flange vertical extension and to the top of a radially outwardly extension of the rotatable plug. This system eliminates one joint through which fluids contained in the vessel could escape by making the fluid flow path through the joint between the flange and the support ring follow the same path through which fluid could escape through the plug risers. In this manner, the sealing means to prohibit the escape of contained fluids through the plug risers can also prohibit the escape of contained fluid through the securing joint.
REFERENCES:
patent: 2890009 (1959-06-01), Chapellier
patent: 3819478 (1974-06-01), Thorel et al.
patent: 3867254 (1975-02-01), Brandstetter
PMC-74-01, CONF-741087, Proposed Reference Design for the Clinch River Breeder Reactor Plant (10/74), pp. 20-24.
Cangialosi S. A.
Carlson Dean E.
Engle Samuel W.
Erdley R. G.
McHale C. L.
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