Flow limiting head adapter extension

Details Flow limiting head adapter extension Flow limiting head adapter extension

1985-02-12

1987-12-22

Terapane, John F.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

With particular control rod guide structure

376203, 376281, 376463, G21C 101, G21C 700

Patent

active

047145846

ABSTRACT:
A device for use in a nuclear reactor which includes a pressure vessel having a vessel head, a core in the vessel, elements for controlling the reactivity of the core, drive rods which pass through the vessel head for displacing the elements, and a plurality of head adapters which pass through the vessel head, each head adapter forming part of a drive rod housing enclosing a respective drive rod, each housing enclosing a region which communicates with the interior of the vessel and which is closed at the top. The drive is associated with a respective housing and constitutes a housing extension including a component for connecting the device to the head adapter forming part of the respective housing, and a component for forming, around the associated drive rod and within the associated housing, a fluid passage having a cross-sectional area not exceeding a selected value at least upon the occurrence of a leak in the respective housing.

REFERENCES:
patent: 3595748 (1971-07-01), Frisch et al.
patent: 3816245 (1974-06-01), Bevilacqua

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