ARNOLD STANLEY KITZES
Engineers in Pittsburgh, PA

4444680, Apr 24, 1984

Jun 26, 1981

6/277579

Arnold S. Kitzes - Pittsburgh PA
Erich W. Tiepel - Littleton CO

Westinghouse Electric Corp. - Pittsburgh PA

G21F 908

252632

An apparatus for the volume reduction of radioactive liquid waste solutions such as evaporator waste bottoms containing boric acid or sodium sulfate and trace quantities of radioactivity through a vacuum evaporative cooling crystallization process or an evaporative crystallization process. A crystallization unit has an internal baffle which separates the center portion of the unit into a quiescent zone where crystallization can be effected and an inner chamber into which the liquid waste is tangentially introduced. The waste is circulated from the bottom of the crystallization unit through a heat exchanger which adjusts the temperature of the liquid waste and maintains the temperature within a predetermined range. The vacuum draws off a portion of the solvent in the solution. Upon the crystallization of the liquid waste solution to a degree which renders a solid-liquid slurry, the slurry is removed from the apparatus for further treatment.

4008171, Feb 15, 1977

Sep 10, 1973

5/395803

Erich W. Tiepel - Export PA
Pang K. Lee - Pittsburgh PA
Arnold S. Kitzes - Pittsburgh PA
Donald L. Grover - McMurray PA

Westinghouse Electric Corporation - Pittsburgh PA

G21F 930

2523011W

A process for reducing the volume of spent radioactive ion exchange resins which have been used for conditioning water circulated through a nuclear reactor. The spent resins are discharged from the reactor system as radioactive wastes to a spent resin storage tank in the form of a slurry. The slurry is first vacuum dewatered to remove the free water and then the intrinsic water in the wet resin beads is removed by drying in a vacuum fluidized bed chamber utilizing superheated steam which also acts to fluidize the bed. Further drying is accomplished by spraying the partially dried resin and superheated steam through a steam injected two-fluid nozzle for further extraction of intrinsic water from the resins. The steam is discharged to a condenser and the dried resins to an evacuated disposal drum. Approximate 4:1 volume reductions from the resin-water slurry to the dried resin is obtainable by practicing the process.

4053432, Oct 11, 1977

Mar 2, 1976

5/663035

Erich W. Tiepel - Export PA
Christopher K. Wu - Wilkins PA
Arnold S. Kitzes - Pittsburgh PA

Westinghouse Electric Corporation - Pittsburgh PA

G21F 932

2523011W

A process for reducing the volume of spent organic radioactive ion-exchange material which has been used for conditioning water circulated through a nuclear reactor. The spent radioactive ion-exchange material is removed from the reactor system and inserted into a dryer, where the residual free water and some of the intrinsic water in the ion-exchange material is removed so that the ion-exchange material has a moisture content less than 50% by weight. The dried ion-exchange material is then inserted into a fluid bed reactor, a carrier gas is inserted into the reactor and fluidizes the ion-exchange material, and the ion-exchange material is heated. The heating thermally decomposes the ion-exchange material, producing an effluent gas, which contains the volatile decomposition products. The carrier gas and the effluent gas are removed from the fluid bed reactor. After the thermal decomposition, or pyrolysis, is completed, the insertion of the carrier gas into the reactor is stopped and an oxygen-containing gas is inserted into the reactor.

4572938, Feb 25, 1986

Jan 16, 1984

6/571215

John M. Driggers - Penn Hills PA
Thomas J. Saska - Lower Burrell PA
Arnold S. Kitzes - Pittsburgh PA

Westinghouse Electric Corp. - Pittsburgh PA

B23K 102, B23K 104

219 85BM

Small portable electrical resistance heated radiant heating unit useful for insertion in tube bores to effect localized high temperature heating. Useful for the internal heating of tubes and tube/sleeve assemblies in steam generators, for brazing, stress relieving, and other applications. Has a machined mandrel of boron nitride and electrical resistance wire leads that have reduced electrical resistance for reduced heat generation by the leads. The leads preferably are braided, to permit the use of cramped connectors.