Cvi Incorporated

Pennwalt Corporation

Ivars Sigurds Spulgis

Harold Cheney Parish

Michael Duane Allard

Thomas N Hickey

Jack Leland Pettit

David R Hoy

A reciprocating pump which substantially eliminates cavitation problems without imposing capacity and flow limitations to maintain a net positive suction head. The pump comprises a cylinder having a liquid inlet and a liquid outlet, a piston reciprocably movable within the cylinder and generally intermediate the liquid inlet and liquid outlet, the piston having a liqud flow conduit therethrough generally co-axial with the cylinder, the liquid flow conduit having an inlet end in liquid communication with the cylinder liquid inlet and an outlet end in liquid communication with the cylinder liquid outlet, a piston rod reciprocably movable generally along the axis of the cylinder for reciprocably moving the piston within the cylinder in a direction toward the cylinder liquid outlet and in a reciprocal direction and a valve operatively associated with an intermediate the piston rod and the piston liquid flow conduit inlet end for alternatively opening and closing the inlet to liquid flow, the valve being closed when the piston rod and piston are moved in the direction toward the cylinder liquid outlet and being open when the piston rod and piston are moved in the reciprocal direction. In one embodiment, the valve comprises a valve disk freely movable on one end of the piston rod.

Saturated fluid pumping apparatus

A gas purifier having a removeable sample canister apparatus and gas adsorber in combination is provided for use in atmospheric containment and cleanup systems in nuclear power plants and other air and gas filtering applications. The sample canister is particularly adapted for removeable attachment to and use in combination with a gas adsorber having a plurality of parallel spaced filter beds. The sample canister is designed to permit the sampling of adsorbent material at discrete time intervals without disturbing adsorbent material in the filter beds and without disturbing the structural integrity of the gas adsorber to which the sample canister is attached.

Gas purifier having rechargeable adsorber filter with removeable

Methods for removing radioactive isotopes from contaminated gas streams for use in atmospheric containment and cleanup systems in nuclear power plants are provided. The methods provide for removal of radioactive isotopes from a first portion of the contaminated stream, separated from the remaining portion of the stream, so that adsorbent used to purify the first portion of the contaminated stream by adsorption of the radioactive isotopes therefrom can be tested to determine the adsorbing efficacy of the generally larger portion of adsorbent used to purify the remaining portion of the stream.

Methods for removing radioactive isotopes from contaminated streams

Methods are provided for filling adsorber filter cells with particulate granular adsorbent material from above the filter cells. The methods produce a substantially uniform packing density of particulate material in the cells without the necessity of vibrating the cells.

Methods for filling filter cells with adsorbent material

Apparatus is provided for use in filling charcoal adsorber air filter cells by dispersing the particulate charcoal into the filter while the apparatus is disposed vertically above the filter. The apparatus is particularly adapted to produce an even packing density of particulate charcoal in the filled air filter without the necessity of vibrating the air filter once the charcoal has been allowed to fill the filter to the top. A method is provided for semi-automatically, pneumatically filling the apparatus and the charcoal adsorber air filter. Some embodiments of the apparatus are adapted for filling two or more charcoal adsorber air filters simultaneously.

Charcoal adsorber filter fill system

A closure apparatus is provided for optionally closing and opening a storage hopper portion of an adsorber filter fill system used for filling adsorber filter cells in a gas adsorber filter system. The closure apparatus is particularly adapted to have a portion thereof move with respect to a metering means of storage hopper of an adsorber filter fill system between first or open and second or closed positions, so as to optionally, selectably permit the opening and closing of the storage hopper. The closure apparatus provides a substantially air-tight seal at holes in the metering means of the adsorber filter fill system when the closure apparatus is at the closed position. The closure apparatus is designed so that its sliding operation and maintenance of substantially air-tight seals is not adversely affected by the presence of any granules of adsorbent which remain in the holes in the metering means or in the vicinity of the holes in the metering means once filling of the adsorber filter system is completed.

Adsorber filter fill system closure apparatus

Standby gas treatment system for removal of radioactive release from a nuclear containment structure not only during normal purge operations but also in the event of a design basis accident. Ventiduct trains arranged in parallel so that one is redundant are each operative to extract dust in excess of 0.3 microns and adsorb radioactive iodine and compounds thereof at 99.9% plus efficiency. A rechargeable gasketless charcoal filter in each train can be filled or emptied without removing the filter enclosures per se. Laminar flow filter beds entirely encapsulate the gas stream to provide low gas velocity and even distribution across the charcoal cage without channeling, thereby securing long residence time.

Growing community of inventors

Columbus, OH, United States of America

Ivars Sigurds Spulgis