Westinghouse Electric Corporation

Fusion Systems Corporation

Fusion Uv Systems, Inc.

John B Gunter

Paolo R Zafred

David A Snyder

William C Ritz

Clifford J Winkler

Michael G Ury

James W Everett

Robert F Keating

Derek S Matheson

Edward P Shields

Lawrence A Nelson

George G Elder

George D Fulmer

Frank Sadofsky

Wayne H Johnson

Burton S Thomas

Ricardo A Allison

Diane E Falk

Ray F Chuang

Donald E Kuechle

William Woolfolk

Daniel V Ensz

Thomas E Plovock

George J Quinn

An apparatus for aligning the object focus of an elliptical reflector, such as positioned within the filament tube of a filament irradiating unit, with a directional axis, such as the centerline of the filament as it travels through the tube. The apparatus includes a support assembly for mounting the tube in a precisely fixed position, and three adjustable mounting assemblies connected to the support assembly at three spaced apart connection points for mounting the support assembly on a stationary base. Each of the mounting assemblies includes a pair of linkages each of adjustable length and forming two sides of a triangle with its apex at the point of connection to the support assembly. Each connection point is at the apex of an imaginary triangle such that adjustment of the mounting assemblies provides both lateral and tilting movements of the support assembly relative to the stationary base, and the central tube axis may be easily tilted, as well as moved laterally, into coincidence with the directional axis from multiple directions.

Apparatus for aligning the object focus in filament irradiating units

An apparatus and process for positioning and for simultaneously oscillating a plurality of heater probes within a plurality of heat exchanger tubes mounted in a tubesheet of a nuclear steam generator is disclosed herein. The apparatus generally comprises a frame, a plurality of probe drivers mounted onto the frame, wherein each driver includes a pneumatically operated, bladder-type gripper for selectively gripping and ungripping the push-cable of one of the heater probes, as well as an oscillating mechanism powered by a variable voltage d.c. motor. A controller connected between the d.c. motor and a power source separately controls the frequency and the amplitude of the cycle that the oscillating mechanism moves the gripper in, and further controls the alignment between the midpoint of the oscillatory cycle and a selected point along the longitudinal axis of the tube. The apparatus is movable to a selected position on the tubesheet by means of a robotic arm, and includes a coupling for remotely attaching and detaching the arm from the frame of the apparatus. The frame of the apparatus includes a pair of opposing cam-locks for detachably securing the apparatus at a selected position on the tubesheet, thereby advantageously freeing the robotic arm that delivered the apparatus. Finally, the frame is contoured to the shape of the inner walls of the steam generator so that the apparatus can service heat exchanger tubes located on the periphery of the tubesheet.

Apparatus and process for simultaneously positioning and oscillating a

An improved bulb mounting arrangement for an electrodeless lamp to prevent the bulb from rotating during lamp operation. The shape of the bulb mounting projection ends and the shape of the cavity side wall openings are arranged so as to cooperate with each other to preclude substantial rotation of the bulb.

Electrodeless lamp with improved bulb mounting arrangement

An improved system for removing a plug from the open end of a heat exchanger tube in a nuclear steam generator is disclosed herein. It is particularly adapted for removing a plug formed from an elongated, cylindrical shell of Inconel.RTM. having a closed end, an open ends, and an expander element that radially expands the shell when axially drawn from the clossed to the open end of the shell. The system comprises an expander remover for axially pushing the expander element from the open end completely through the closed end of the plug shell, and a TIG torch for creating beads along the longitudinal axis of the plug shell which relax the engagement between the plug shell and the tube after the weld beams harden. Finally, the system includes a plug puller for pulling the loosened plug from the tube. The expander remover and plug puller maybe remotely operated by means of a robotic arm, and a compliance coupling is provided to facilitate alignment between these tools and the plugged end of a selected heat exchanger tube.

System for removing a plug from a heat exchanger tube

Both an apparatus and process for providing a coolant flow path in the top former plate of the core of a nuclear reactor are disclosed. The apparatus of the invention generally comprises an elongated tool support member having a tool mounting means for detachably mounting various tools in the vicinity of the top former plate, and a clamp assembly for securing and positioning the tool mounting means over the plate. The apparatus also includes an ultrasonic transducer (or probe) for measuring the thickness of the plate, a rotabroach device having a feed and drive assembly for driving a pilot drill bit and a rotabroach bit toward the top former plate, and a piercing tool for removing the slug formed by the rotabroach bit. In the process of the invention, an alternate coolant flow path is provided in the top former plate by boring a plurality of holes therethrough. In the boring process, the ultrasonic transducer is first detachably mounted onto the tool mounting means in order to measure the thickness of the plate. Next, the ultrasonic transducer is replaced on the tool mounting means by the rotabroach device and a pilot hole is drilled through the plate. The pilot hole is then broached by a rotabroach bit which penetrates down to the last 0.030 in. of the plate. Simultaneously, metal chips and slivers are removed with a chip breaking and collecting system. Finally, the feed and drive assembly are replaced by a piercing tool which removed the slug of metal in the broached hole in 'can-opener' fashion to minimize the amount of metal chips generated by the cutting.

Apparatus and process for providing an alternate coolant path in the

The baffle maintenance apparatus comprises a peening apparatus mounted on a movable carriage for reducing the width of a gap between two adjacent baffle plates in a nuclear reactor. The peening apparatus comprises an hydraulic hammer mounted on a pivotable plate that is capable of being positioned in proper relationship to the baffle plate for reducing the gap therebetween. The baffle maintenance apparatus may also comprise a gauging mechanism mounted on the carriage for determining the width of the gap between the baffle plates.

Baffle maintenance apparatus

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Catonsville, MD, United States of America

John B Gunter