Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Expansion means
Patent
1996-03-25
1998-09-29
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Expansion means
376302, 521677, G21C 900
Patent
active
058155430
ABSTRACT:
In a nuclear reactor including a reactor vessel and a core shroud disposed within the reactor vessel in laterally spaced relation, a seismic support includes a spacer extending between laterally opposed surfaces of the reactor vessel and the core shroud to limit lateral movement of the core shroud relative to the reactor vessel and a deformable member carried by the spacer and having a configuration to deform substantially elastically in response to impacts caused by an operating basis earthquake and substantially plastically at relatively constant load in response to impacts caused by a design basis earthquake. The deformable member can be carried at an end of the spacer adjacent the reactor vessel or between the spacer and a bearing plate, and can be formed of a material having a yield strength less than that of the spacer and/or be of reduced cross-sectional area as compared with the spacer to yield under a desired seismic load. In a preferred embodiment, the seismic support defines a bearing surface in spaced relation with an interior surface of the reactor vessel to define a clearance gap that minimizes the frequency and magnitude of impacts between the core shroud and the reactor vessel.
REFERENCES:
patent: 3129836 (1964-04-01), Frevel
patent: 3850795 (1974-11-01), Thome
patent: 4011132 (1977-03-01), Kumpf et al.
patent: 4073685 (1978-02-01), Brown et al.
patent: 4135974 (1979-01-01), Garkisch et al.
patent: 4379119 (1983-04-01), Fujimoto
patent: 4596689 (1986-06-01), Gorholt et al.
patent: 5402570 (1995-04-01), Weems et al.
patent: 5430779 (1995-07-01), Baversten et al.
patent: 5502754 (1996-03-01), Erbes
patent: 5577082 (1996-11-01), Weems et al.
patent: 5588031 (1996-12-01), Bevilacqua et al.
patent: 5600688 (1997-02-01), Jung
patent: 5600689 (1997-02-01), Weems et al.
Greene Thomas E.
Weems Sterling J.
MPR Associates, Inc.
Wasil Daniel D.
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