Adrian Peter Wivagg

US Patent:

6390509, May 21, 2002

Filed:

Jan 27, 2000

Appl. No.:

09/492303

Inventors:

Adrian Peter Wivagg - Tolland CT

Assignee:

Westinghouse Electric Company LLC - Pittsburgh PA

International Classification:

F16L 500

US Classification:

285191, 285 15, 285185

Abstract:

A shroud connection device for replacement core spray piping systems in a boiling water reactor includes replacement pipe, first and second coupling devices, and a rod. The pipe has a spherically shaped end, and includes a penetration extending through it from an inside portion to an outside portion. The first coupling device has first and second ends, the first end being dimensioned so as to receive the spherically shaped end of the pipe, and the second end abutting an outside portion of the shroud. The second coupling device has third and fourth ends, the third end abutting an inside portion of the shroud. The rod extends between the second coupling device and the penetration in the pipe.

US Patent:

6463114, Oct 8, 2002

Filed:

Jan 7, 2000

Appl. No.:

09/479225

Inventors:

Adrian P. Wivagg - Tolland CT

Assignee:

Westinghouse Electric Company LLC - Pittsburgh PA

International Classification:

G21C 1902

US Classification:

376285, 376260, 376372, 254104

Abstract:

A jacking device includes first, second, and third members ( ), and a jacking screw ( ). The first and second members ( ) have sloping side portions ( ). The third member ( ) has a plurality of sloped side portions ( ) and a threaded opening ( ) extending from its top portion ( ) through to its bottom portion ( ). The third member ( ) is movably supported between the first and second members ( ). The jacking screw ( ) engages the threaded opening ( ) in the third member ( ).

US Patent:

6467814, Oct 22, 2002

Filed:

Mar 20, 2000

Appl. No.:

09/531408

Inventors:

Adrian P. Wivagg - Tolland CT

Assignee:

Westinghouse Electric Company - Pittsburgh PA

International Classification:

F16L 4100

US Classification:

285205, 285323, 2851401, 285213

Abstract:

Apparatus has a vessel fitting ( ) and a retainer ( ) that connect a core spray pipe system ( ) to an opening ( ) in a wall ( ) in a vessel ( ) in a boiling water nuclear reactor. The vessel fitting ( ) has a plurality of resilient beams ( ), ( ), ( ), ( ), ( ) and ( ) arranged to extend into the opening ( ) and lock the vessel fitting ( ) in place on the vessel. The retainer ( ) is installed on the vessel fitting ( ) by inserting it through a passage ( ) in the vessel fitting ( ). The retainer ( ) bears against the beams to maintain them in locking engagement with the vessel.

US Patent:

6726140, Apr 27, 2004

Filed:

Jan 5, 2001

Appl. No.:

09/755244

Inventors:

Adrian P. Wivagg - Tolland CT

Assignee:

Westinghouse Electric Company LLC - Pittsburgh PA

International Classification:

B65H 7548

US Classification:

2423782, 2423781

Abstract:

Apparatus for delivering energy and material, such as electricity, air and fluid, from a source ( ) to a driven device ( ). The apparatus ( ) comprises at least one flexible elongated member ( ) selected from the group of electrical conductors, air hoses, fluid hoses and the like. The elongated member has a feed portion ( ) with a feed end ( ) connectable to the source, a slack portion ( ), a supply portion ( ) with a supply end ( ) connectable to the driven device, a first portion ( ) between the feed portion and the slack portion, and a second portion ( ) between the slack portion and the supply portion. The apparatus also includes a stationary hub ( ) and a spool ( ) connected to the hub. The spool is rotatable between stored and deployed conditions relative to said hub. A winding wall ( ) on the spool is spaced away from the hub and has an internal surface ( ), an oppositely disposed winding surface ( ), and an aperture ( ) extending therethrough.

US Patent:

7023949, Apr 4, 2006

Filed:

Apr 22, 2004

Appl. No.:

10/830452

Inventors:

Adrian P. Wivagg - Tolland CT, US

Assignee:

Westinghouse Electric Company LLC - Pittsburgh PA

International Classification:

G21C 19/00

US Classification:

376260, 376285, 376305, 376372, 1051984, 105404, 414686

Abstract:

A BWR jet pump assembly has a wedge slidably mounted on a jet pump that is movable under the force of gravity to seat between a bracket and the jet pump in order to horizontally support the jet pump against vibrations. The wedge or the bracket is repaired in situ by: providing a spacer layer between mating surfaces of the wedge and the bracket; and then lowering the wedge until the spacer layer is between and in contact with the wedge and the bracket.

US Patent:

7092477, Aug 15, 2006

Filed:

Oct 1, 2003

Appl. No.:

10/676453

Inventors:

Adrian Peter Wivagg - Tolland CT, US
Paul Joseph Boone - Bethel Park PA, US

Assignee:

Westinghouse Electric Co LLC - Pittsburgh PA

International Classification:

G21C 17/003

US Classification:

376249, 245248

Abstract:

A reactor service manipulator delivery system supported on a remotely operated trolley that travels on top of a track attached to the steam dam of a BWR shroud. The trolley has a mast and pulley system designed to manipulate a TV camera for inspection of various reactor components inboard and outboard of the shroud at the same time that fuel is being moved within the core during a refueling operation so that refueling can be performed in parallel with the inspection.

US Patent:

20040190671, Sep 30, 2004

Filed:

Mar 26, 2003

Appl. No.:

10/397626

Inventors:

Adrian Wivagg - Tolland CT, US

International Classification:

G21C019/00

US Classification:

376/260000

Abstract:

A BWR jet pump assembly has a wedge slidably mounted on a jet pump that is movable under the force of gravity to seat between a bracket and the jet pump in order to horizontally support the jet pump against vibrations. The wedge or the bracket is repaired in situ by: providing a spacer layer between mating surfaces of the wedge and the bracket; and then lowering the wedge until the spacer layer is between and in contact with the wedge and the bracket.

US Patent:

57938288, Aug 11, 1998

Filed:

Apr 17, 1996

Appl. No.:

8/633440

Inventors:

Adrian Peter Wivagg - Tolland CT
Karl Heinz Haslinger - Bloomfield CT

Assignee:

Combustion Engineering, Inc. - Windsor CT

International Classification:

G21C 1900

US Classification:

376260

Abstract:

In order to support a shroud against bending, shear, stress and torsion, straps are placed in strategic positions with respect to cracks or like types of weaknesses which have been detected, and fastened in place using a suitable fastening technique. Holes are formed using an EDM technique in cooperation with supports for an EDM placed on the straps, and bolt units which have an expanding portion are inserted into the holes, torqued and expanded in a manner which fastens the strap to the shroud. A temperature responsive bimetallic strain system which produces a clamping force, is created by forming the straps of a material which has a lower expansion coefficient than the shroud material. As the reactor heats, the expansion differential tensions the straps and produces a clamping force.