General Electric Company

Other

Gerald W McKenzie

Harold B King

John L Harmon

Frederick C Schoenig, Jr

Leonard N Grossman

James D Landry

William Masaitis

Abdul G Dada

Robert O Canada

Robert G MacIvergan

Eileen F Haag

Charles Schiltz

Tracy S Harmon

The surfaces of a metal or alloy component are scrubbed by a high-velocity stream of inert gas at temperatures which facilitate removal of contaminants. Simultaneous with scrubbing, the impurities are captured in a separated loop of one or more 'getter' filters operating at optimized temperatures. The scrubbing and 'getting' functions are followed by a rapid elevation of the temperature of the component by heating the inert gas, now essentially free of contaminants which would otherwise react with the component surface at the elevated temperatures. Thereafter, a specific protective layer-forming agent is introduced into the inert gas stream at an ideal temperature, which agent will react predictably with the component being treated to form a predetermined protective coating on its surface.

Hot argon cleaning and protective coating of components made of metal or

The disclosed invention comprises a method for assembling fuel bundles for service in nuclear reactors which minimizes damage to the assembled components of a nature that renders the components susceptible to destructive corrosion in service, and the enhanced product of the improved method. The invention includes the utilization of a temporary protective barrier, such as water soluble sodium silicate or gelatin, intermediate the components during assembly.

Scratch preventing method of assembling nuclear fuel bundles, and the

An improved method and means for sizing metal configuration through the application of thermal expansion and contraction of a shaping mandrel. The thermally induced changes in the shaping mandrel are produced from within the body at the mandrel.

Method and means for metal sizing employing thermal expansion and

A method and system for quality control of nuclear fuel materials, said system including amplifier/integrator circuitry, signal processors, and drift control feedback circuitry. The invention permits the qualitative and quantitative measurement of paramagnetic additives such as gadolinium for example in a paramagnetic base nuclear fuel material including ferromagnetic impurities. Drift problems relating to temperature and other effects are solved electrically and mechanically. Analysis can be conducted irrespective of the form or composition of the nuclear fuel.

System for the analysis of nuclear fuel rods

An apparatus incorporating a microprocessor control is provided for automatically loading nuclear fuel pellets into fuel rods commonly used in nuclear reactor cores. The apparatus comprises a split 'V' trough for assembling segments of fuel pellets in rows and a shuttle to receive the fuel pellets from the split 'V' trough when the two sides of the split 'V' trough are opened. The pellets are weighed while in the shuttle, and the shuttle then moves the pellets into alignment with a fuel rod. A guide bushing is provided to assist the transfer of the pellets into the fuel rod. A rod carousel which holds a plurality of fuel rods presents the proper rod to the guide bushing at the appropriate stage in the loading sequence. The bushing advances to engage the fuel rod, and the shuttle advances to engage the guide bushing. The pellets are then loaded into the fuel rod by a motor operated push rod. The guide bushing includes a photocell utilized in conjunction with the push rod to measure the length of the row of fuel pellets inserted in the fuel rod. Safeguards are employed to insure that the weight and position of the fuel pellets within the fuel rod fall within certain prescribed limits. After a segment of fuel pellets has been loaded, the guide bushing disengages the fuel rod, the rod carousel transfers a new rod into position, and the entire loading operation is repeated.

Nuclear fuel rod loading apparatus

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Wilmington, NC, United States of America

Gerald W McKenzie