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US 6,550,492 B2Granted
Filter vent fitting
AssigneeUltraTech International, Inc.
InventorsMark D. Shaw, J. Tad Heyman, Laurence M. Bierce
Life of this patent
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Abstract
A filter vent fitting for a drum which allows for the passage of hydrogen gas but precludes the passage of radioactive particulates, the fitting having evacuation/pressurization conduits which allow the drum to be evacuated or pressurized, and cryogenic/sapling conduits which allow the temperature of the drum to be reduced and samples drawn from the interior which are not filtered. Preferably a cap member is provided with a pressure balancing bore which is active during the evacuation and pressurization steps.
Claims40
A filter vent fitting adapted for use with a drum, said fitting comprising:
- filter means which allows the passage of hydrogen and other gases while preventing the passage of radioactive particulates;
- venting conduit means which allows gas produced within the drum to vent to the ambient through said filter means and which allows gas to be introduced into or evacuated from the drum through said fitting;
- and
- cryogenic/sampling conduit means which allows cryogenic substances to be introduced into the drum and gas samples to be extracted from the drum.
1 more element
Dependencies are inferred from the claim text.