Support arrangement for core modules of nuclear reactors

Details Support arrangement for core modules of nuclear reactors Support arrangement for core modules of nuclear reactors

1983-11-03

1987-02-17

Bell, Paul A.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

Fuel component

376268, 376363, 294906, G21C 1900

Patent

active

046438688

ABSTRACT:
A support arrangement is provided for the core modules of a nuclear reactor which provides support access through the control drive mechanisms of the reactor. This arrangement provides axial support of individual reactor core modules from the pressure vessel head in a manner which permits attachment and detachment of the modules from the head to be accomplished through the control drive mechanisms after their leadscrews have been removed. The arrangement includes a module support nut which is suspended from the pressure vessel head and screw threaded to the shroud housing for the module. A spline lock prevents loosening of the screw connection. An installation tool assembly, including a cell lifting and preloading tool and a torquing tool, fits through the control drive mechanism and provides lifting of the shroud housing while disconnecting the spline lock, as well as application of torque to the module support nut.

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patent: 4279699 (1981-07-01), Kuhn

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