Nuclear reactor pressure vessel installation

Details Nuclear reactor pressure vessel installation Nuclear reactor pressure vessel installation

1975-06-26

1977-08-02

Engle, Samuel W.

176 38, G21C 1304, G21C 900

Patent

active

040393801

ABSTRACT:
A nuclear reactor pressure vessel is vertically positioned in a concrete reactor pit. The vessel thermally expands and contracts axially and radially. To reduce the possibility of a wall rupture caused by the radial expansion, the top and bottom of the vessel are restrained from movement by the axial expansion, thus placing the vessel's wall under compressive stress in the axial direction. At the top this is done in any prior art manner. At the bottom, the restraint is provided by a series of vertical leaf springs circumferentially interspaced around the vessel's bottom, the lower ends of the springs being fixed to the vessel and the springs extending upwardly therefrom to upper support arrangements. Thus, the bottom of the vessel is suspended by the springs working in tension, while the radial expansion and contraction movements are accommodated by flexure of the springs.

REFERENCES:
patent: 2062760 (1936-12-01), Overstrom
patent: 2572919 (1951-10-01), French
patent: 2821325 (1958-01-01), Chapellier
patent: 3129836 (1964-04-01), Frevel
patent: 3295808 (1967-01-01), Webb
patent: 3353772 (1967-11-01), Fair
patent: 3601343 (1971-08-01), Sivaslian

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