Lateral restraint for core plate of boiling water reactor

Details Lateral restraint for core plate of boiling water reactor Lateral restraint for core plate of boiling water reactor

1995-02-02

1996-03-26

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Core restraint means

376285, G21C 1900

Patent

active

055027547

ABSTRACT:
An apparatus for stabilizing a core plate against lateral deflection. A plurality of core plate wedge assemblies (e.g., four) are installed in the circumferential gap between the circular outer peripheral edge of the core plate and the circular cylindrical wall of the middle shell of the shroud at respective azimuthal positions. These core plate wedge assemblies are wedged into place with preload to maintain the spacing between the core plate and the shroud, thereby maintaining the alignment of the fuel assemblies. The core plate wedge assemblies further serve to transmit loads from the nuclear fuel core to the core shroud at azimuthal locations where lateral shroud restraints outside the shroud contact the reactor pressure vessel.

REFERENCES:
patent: 5402570 (1995-04-01), Weems et al.
GE Proposal No. 894-1D7DM-EK1, Revision 1, Core Spray Line Crack Repair, Dec. 9, 1993.
Shroud Repair, Description of Alternatives, Alan N. Baker, Mar. 1994.
Apr. 22, 1994 letter from Al Kozusko & Thomas Sliva of AEA O'Donnell, Inc. to Victor Bain of General Electric Company with annexed Description, facsimile cover sheet and drawings.
Presentation No. 94-004 dated May 2, 1994, by Welding Services Inc. and Structural Integrity Associates, Inc.

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