Vent assembly

Details Vent assembly Vent assembly

1991-11-06

1993-10-12

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

Fuel component

376264, 376234, G21C 1900

Patent

active

052532771

ABSTRACT:
A vent tube (66) and housing nut (62) replace the original housing plug (52) on a pressurized water nuclear reactor. The vent tube engages the installed vent stem (38) cross-slot (48) with a cross-shaped projection (70). During operation, the vent tube (66) is pushed down to engage the vent stem (38) and rotated to allow vented air to travel through stem (38) and tube (66). After venting, the vent stem is rotated back and tightened. The invention provides visual indication of a leaking ball (32) since any leakage lifts vent tube (66). Time required for venting is reduced and no removal of installed ball seal (32,34), a proven primary seal, is required.

REFERENCES:
patent: 4134789 (1979-01-01), Aubert
patent: 4468000 (1984-08-01), Smith
patent: 4752434 (1988-06-01), Savary

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