Apparatus and method for replacing internal components in a nucl

Details Apparatus and method for replacing internal components in a nucl Apparatus and method for replacing internal components in a nucl

1996-08-02

1999-01-26

Jordan, Charles

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

376302, 376461, G21C 1900, G21C 1300

Patent

active

058645942

ABSTRACT:
An apparatus and method are provided for replacing the existing lower internal components in a nuclear reactor vessel with new components. The alignment of the new lower internals to the pressure vessel and the existing upper internals is achieved by customizing the new lower internals on-site based on alignment measurements obtained by gages installed on the new core barrel and the existing upper core plate. The gages allow the custom machining of radial support keys on the lower portion of the new core barrel and the custom drilling of upper core plate alignment pin holes in the new core barrel.

REFERENCES:
patent: 4707325 (1987-11-01), Hopkins
patent: 4756877 (1988-07-01), Veronesi et al.
patent: 5149490 (1992-09-01), Brown et al.
patent: 5490190 (1996-02-01), Hopkins et al.
patent: 5550883 (1996-08-01), Bougis

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