Missile shield for a nuclear reactor pressure vessel

Details Missile shield for a nuclear reactor pressure vessel Missile shield for a nuclear reactor pressure vessel

1998-12-31

2000-05-09

Jordan, Charles T.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Auxiliary heat removal structure

376294, 376287, 376263, 376260, G21C 1100, G21C 1500

Patent

active

060614153

ABSTRACT:
An integrated head assembly for a nuclear reactor pressure vessel includes a closure head with CRDM assemblies extending upwardly from the head. A CRDM seismic support disposed above the closure head provides lateral support for the CRDM assemblies. The seismic support also has air flow holes which communicate with the interior of a shroud enclosing the CRDMs and extending upwardly from the closure head to the seismic support. The shroud has an air port in direct air flow communication with the surrounding atmosphere so that the closure head, shroud and seismic support define an air flow passageway directly communicating with the surrounding atmosphere via the air port and without the extensive ductwork and, therefore, with substantially less power. A missile shield disposed above and in air flow communication with the seismic support provides a lightweight, compact physical barrier for removing energy from dislocated objects such as CRDM drive rods.

REFERENCES:
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patent: 4678623 (1987-07-01), Malandra et al.
patent: 4828789 (1989-05-01), Hankinson
patent: 4830814 (1989-05-01), Altman
patent: 5078957 (1992-01-01), Tower et al.
patent: 5225150 (1993-07-01), Malandra et al.
patent: 5305357 (1994-04-01), Ekeroth
patent: 5715288 (1998-02-01), Matteson
patent: 5930321 (1999-07-01), Harkness et al.

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