LOUIS JAMES MALANDRA
Engineers in Mckeesport, PA

5225150, Jul 6, 1993

Jun 23, 1992

7/903250

Louis J. Malandra - McKeesport PA
Leonard P. Hornak - Forest Hills PA
Robert E. Meuschke - Monroeville PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1900, G21C 1100

376263

A nuclear reactor such as a pressurized water reactor has an integrated head package providing structural support and increasing shielding leading toward the vessel head. A reactor vessel head engages the reactor vessel, and a control rod guide mechanism over the vessel head raises and lowers control rods in certain of the thimble tubes, traversing penetrations in the reactor vessel head, and being coupled to the control rods. An instrumentation tube structure includes instrumentation tubes with sensors movable into certain thimble tubes disposed in the fuel assemblies. Couplings for the sensors also traverse penetrations in the reactor vessel head. A shroud is attached over the reactor vessel head and encloses the control rod guide mechanism and at least a portion of the instrumentation tubes when retracted. The shroud forms a structural element of sufficient strength to support the vessel head, the control rod guide mechanism and the instrumentation tube structure, and includes radiation shielding material for limiting passage of radiation from retracted instrumentation tubes. The shroud is thicker at the bottom adjacent the vessel head, where the more irradiated lower ends of retracted sensors reside.

4433828, Feb 28, 1984

Jan 29, 1981

6/229362

Stanley R. Spiegelman - Churchill PA
Robert B. Salton - Plum Borough PA
Robert W. Beer - Murrysville PA
Louis J. Malandra - Boston PA
Michael L. Cognevich - Houston TX

Westinghouse Electric Corp. - Pittsburgh PA

E21B 1900

254 29A

A quick-acting stud tensioner tool for enabling the loosening or tightening of a stud nut on a reactor vessel stud. The tool engages the vessel stud by closing a gripper mechanism around an upper end of the vessel stud upon a transfer of the mass of the tool from a hoist to a support structure surrounding the vessel stud. After the stud has been elongated, the gripper mechanism releases the vessel stud when the mass of the tool is transferred from the support structure surrounding the vessel stud to the hoist.

5588031, Dec 24, 1996

Oct 27, 1994

8/330058

Bruce W. Bevilacqua - Export PA
Louis J. Malandra - McKeesport PA
Robert E. Meuschke - Monroeville PA
Alex W. Harkness - Gibsonia PA

Westinghouse Electric Corporation - Pittsburgh PA

G21C 900

376287

An apparatus, which reinforces a shroud that is contained within a reactor vessel, is operable for reinforcement of the shroud in the event of cracking in the shroud. The apparatus comprises a reactor wall positioned surrounding the shroud. A beam is attached to and extends generally axially on the shroud for absorbing the forces generated by the cracking in the shroud, and a radial support is positioned between the beam and the wall of the reactor vessel for transmitting any forces absorbed by the beam to the wall.

5687207, Nov 11, 1997

Apr 2, 1996

8/627747

Robert E. Meuschke - Monroeville PA
Louis J. Malandra - McKeesport PA

Westinghouse Electric Corporation - Pittsburgh PA

G21C 1920

376264

A refueling machine for refueling a pressurized water reactor has a trolley which travels on rails mounted on a transversely movable bridge. The trolley supports a refueling mast which includes an outer mast and two horizontally spaced apart, vertically movable gripper masts disposed within the outer mast. This design permits the machine to safely handle two fuel assemblies simultaneously in order to substantially reduce refueling critical path time. The two gripper masts can be raised, lowered and otherwise operated independently of each other. A partition plate extending through the stationary mast between the two movable gripper masts permits each fuel assembly held in the refueling mast to be independently leak tested.