Patent
1974-02-11
1976-06-15
Bentley, Stephen C.
176 38, 176 87, 176DIG2, G21C 1700
Patent
active
039635635
ABSTRACT:
A pressurized nuclear-reactor core stands on a base up from which extends a cylindrical side wall formed of a plurality of hollow iron castings held together by circumferential and longitudinal prestressed elements. A cylindrical space between this shield and the core serves for inspection of the core and is normally filled with cast-iron segmental slabs so that if the core bursts pieces thrown out do not acquire any dangerous kinetic energy before engaging the burst shield. The top of the shield is removably secured to the side so that it can be moved out of the way periodically for removal of the filler slabs and inspection of the core. An anchor on the upper end of each longitudinal prestressing element bears against a sleeve pressing against the uppermost side element, and a nut engageable with this anchor is engageable down over the top to hold it in place, removal of this nut leaving the element prestressed in the side wall.
REFERENCES:
patent: 3158546 (1964-11-01), Cordova
patent: 3424239 (1969-01-01), Coudray
patent: 3489206 (1970-01-01), Le Court
patent: 3523062 (1970-08-01), Brown
patent: 3775251 (1973-11-01), Schabert
patent: 3785924 (1974-01-01), Notari
Beine Burkhard
Schilling Franz
Bentley Stephen C.
Dubno Herbert
Nelson Peter A.
Ross Karl F.
Siempelkamp Giesserei KG
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