JAMES R MARSHALL
Engineers in Pittsburgh, PA

4904442, Feb 27, 1990

Nov 14, 1988

7/270878

Kenneth J. Swidwa - N. Versailles PA
Robert B. Salton - Plum Borough PA
James R. Marshall - Penn Hills PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1900, G21C 1100

376203

A nuclear reactor containment arrangement has a permanent cavity ring seal extending across an annular expansion gap between a reactor pressure vessel and a containment wall to provide a water tight seal therebetween. The annular ring seal has a support ring with an inner downwardly extending cylindrical section resting on the reactor flange and an outer downwardly extending cylindrical section resting on a shelf in the containment wall. A vertically extending, L-shaped, seal extends between an inner end of the support ring while a vertically extending, L-shaped, seal extends between the outer cylindrical section and the containment wall shelf. Neutron shielding material is suspended, by support rods, within the annular expansion gap while thermal insulation is provided therebelow. Manways and ports in the support ring are sealed by hatches and provide access to the annular expansion gap and, while open, provide for flow of cooling air from the annular expansion gap through the support ring.

4643867, Feb 17, 1987

Nov 21, 1983

6/553600

Leonard P. Hornak - N. Huntingdon PA
Robert E. Meuschke - Pittsburgh PA
James R. Marshall - Penn Hills PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1708, H04N 718

376248

A refueling machine (10, 100) within a nuclear reactor facility includes an outer stationary mast (12, 112) upon which are mounted a plurality of light sources (28, 128), inclined mirrors (36, 136), and television cameras (24, 124) for scanning a fuel assembly (32) for the existence of any defects or damage as the fuel assembly (32) is being withdrawn from the reactor core into the stationary mast (12, 112). In a first embodiment, the light sources (28), mirrors (36), and cameras (24) are mounted upon a sleeve (14) clamped about the lower end of the stationary mast (12), while in a second embodiment, the light sources (128), mirrors (136), and cameras (124) are mounted upon a basket-type framework (178) which is suspendingly supported upon the stationary mast (112) by support cables (158). A fixture (176) can support the framework (178) in an off-the-mast mode so as to permit remote-controlled maintenance or repair of the light sources ( 128), mirrors (136), or cameras (124). The mirrors (36, 136) may be eliminated and the light sources re-oriented so as to illuminate the reactor core and thereby facilitate the insertion of a fuel assembly (32) within the reactor core.

4905260, Feb 27, 1990

Nov 14, 1988

7/270879

Kenneth J. Swidwa - N. Versailles PA
Robert B. Salton - Plum Borough PA
James R. Marshall - Penn Hills PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1900, G21C 1100

376203

An annular seal ring between a reactor pressure vessel and a containment wall is disposed in an annular expansion gap therebetween, having a support ring and inner and outer upwardly extending cylindrical sections. The inner cylindrical section is disposed below a flange on the reactor and has a flexible seal therebetween, while the outer cylindrical section terminates substantially parallel and spaced from a shelf in the containment wall with a flexible seal therebetween. The annular seal ring is supported by radial support beams, while support rods depending from the support ring position neutron shielding material in the annular expansion gap. Manways and ports provide access to the gap and thermal insulation is provided below the neutron shielding material to direct cooling air from the annular gap up through opened manway and port.

4053067, Oct 11, 1977

Jun 25, 1973

5/373344

Leonard R. Katz - Pittsburgh PA
James R. Marshall - Pittsburgh PA
Walter E. Desmarchais - Monroeville PA

Westinghouse Electric Corporation - Pittsburgh PA

F23K 300

214 18N

A fuel transfer system for moving nuclear reactor fuel assemblies from a new fuel storage pit to a containment area containing the nuclear reactor, and for transferring spent fuel assemblies under water from the reactor to a spent fuel storage area. The system includes an underwater track which extends through a wall dividing the fuel building from the reactor containment and a car on the track serves as the vehicle for moving fuel assemblies between these two areas. The car is driven by a motor and linkage extending from an operating deck to a chain belt drive on the car. A housing pivotally mounted at its center on the car is hydraulically actuated to vertically receive a fuel assembly which then is rotated to a horizontal position to permit movement through the wall between the containment and fuel building areas. Return to the vertical position provides for fuel assembly removal and the reverse process is repeated when transferring an assembly in the opposite direction. Limit switches used in controlling operation of the system are designed to be replaced from the operating deck when necessary by tools designed for this purpose.

4834934, May 30, 1989

Feb 4, 1988

7/152285

Robert B. Salton - Plum Boro PA
Leonard P. Hornak - Forest Hills PA
James R. Marshall - Penn Hills PA
Robert E. Meuschke - Penn Hills PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1900

376271

A thimble grip fuel assembly handling tool (20) for transporting fully loaded fuel assemblies (52) is disclosed. The tool (20) comprises an elongated mast (23) slidingly disposed within an elongated cylinder (113), the cylinder being of a length less than the mast (23) such that the tool defines a mast fill-up position (126) and a mast full-down position (128). A cage (110) assembly acts to protect the gripping means (32) when the tool is transported in the mast full-up position (126). The gripping means (32) is comprised of a plurality of gripping members (49) which grip the inside diameter of control rod guide thimbles (50). The load path is distributed in the tool such that when the fuel assembly (52) secured to the gripping means (32) is raised, the weight of the fully loaded fuel assembly (52) acts to increase the gripping force on the fuel assembly. A number of indicators on the tool act to indicate to an operator: when the tool is in the mast full-down position; when the gripping members (49) have been fully actuated; and if there is any slipping of the gripping members within the fuel assemblies. The tool also includes a secondary gripping mechanism which engages the top nozzle of the fuel assembly.

4815627, Mar 28, 1989

Jan 28, 1988

7/149273

James R. Marshall - Penn Hills PA

Westinghouse Electric Corp. - Pittsburgh PA

B65D 4528

220315

A high preload quick operating closure for a pressure vessel (17) comprises a vessel opening or nozzle (19) having a port flange (20) with an upper surface (23), which has a wall (26) affixed thereto, the wall (26) having one or more circumferentially spaced holes (32), the combination of the wall (26) and port flange (20) forming a well (29), and a vessel head (27) forming a closure for the port flange. A plurality of wedge assemblies (30) secured to the wall (26) at holes (32), comprising hydraulically operated cylinders (39) operably connected to wedges (33) which slidably engage a tapered surface (40) of the vessel head (27) creating a larger sealing force between the head (27) and the flange (20) to seal the pressure vessel (17) with an enormous preload. The closure incorporates a control system (50) with two independent safety features to prevent the closure device from opening when the pressure vessel ( 17) is pressurized.

4678620, Jul 7, 1987

Jul 23, 1984

6/633812

James R. Marshall - Penn Hills PA
Roy T. Hardin - Greensburg PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1300

376203

A hatch assembly has an annular seat, a hatch cover and a plurality of latching units. Each latching unit has a slidably supported locking bolt movable generally radially inwardly with respect to the annular seat into a hatch cover locking position and generally radially outwardly into a hatch cover releasing position. In the hatch cover locking position at least one length portion of the locking bolt extends over the hatch cover for maintaining the hatch cover on the annular seat. Each latching unit further has a rotary crankshaft, an operating handle torque-transmittingly connected to the crankshaft for applying a locking torque and an opposite, releasing torque thereto; and a coupling mechanism for connecting the crankshaft with the locking bolt and for converting rotary motion of the crankshaft to linear motion of the locking bolt. The coupling mechanism has a spring for transmitting the locking torque from the crankshaft as a radially inwardly oriented resilient force to the locking bolt. The radially inwardly oriented resilient force is resolved to a component force with which the locking bolt presses the hatch cover against the annular seat.