Patents by Inventor David R. Forsyth
David R. Forsyth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9305668Abstract: A pressurized water reactor vessel having a flow skirt formed from a perforated cylinder structure supported in the lower reactor vessel head at the outlet of the downcomer annulus, that channels the coolant flow through flow holes in the wall of the cylinder structure. The flow skirt is supported at a plurality of circumferentially spaced locations on the lower reactor vessel head that are not equally spaced or vertically aligned with the core barrel attachment points, and the flow skirt employs a unique arrangement of hole patterns that assure a substantially balanced pressure and flow of the coolant over the entire underside of the lower core support plate.Type: GrantFiled: February 7, 2008Date of Patent: April 5, 2016Assignee: Westinghouse Electric Company LLCInventors: John F. Kielb, Richard E. Schwirian, Naugab E. Lee, David R. Forsyth
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Publication number: 20150310943Abstract: A pressurized water reactor vessel having a flow skirt formed from a perforated cylinder structure supported in the lower reactor vessel head at the outlet of the downcomer annulus, that channels the coolant flow through flow holes in the wall of the cylinder structure. The flow skirt is supported at a plurality of circumferentially spaced locations on the lower reactor vessel head that are not equally spaced or vertically aligned with the core barrel attachment points, and the flow skirt employs a unique arrangement of hole patterns that assure a substantially balanced pressure and flow of the coolant over the entire underside of the lower core support plate.Type: ApplicationFiled: February 7, 2008Publication date: October 29, 2015Inventors: John F. Kielb, Richard E. Schwirian, Naugab E. Lee, David R. Forsyth
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Patent number: 8638900Abstract: An alignment plate that is attached to a core barrel of a pressurized water reactor and fits within slots within a top plate of a lower core shroud and upper core plate to maintain lateral alignment of the reactor internals. The alignment plate is connected to the core barrel through two vertically-spaced dowel pins that extend from the outside surface of the core barrel through a reinforcement pad and into corresponding holes in the alignment plate. Additionally, threaded fasteners are inserted around the perimeter of the reinforcement pad and into the alignment plate to further secure the alignment plate to the core barrel. A fillet weld also is deposited around the perimeter of the reinforcement pad. To accommodate thermal growth between the alignment plate and the core barrel, a gap is left above, below and at both sides of one of the dowel pins in the alignment plate holes through which the dowel pins pass.Type: GrantFiled: September 14, 2007Date of Patent: January 28, 2014Assignee: Westinghouse Electric Company LLCInventors: David A. Altman, David R. Forsyth, Richard E. Smith, Norman R. Singleton
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Publication number: 20130334182Abstract: A core shroud is provided, which includes a number of planar members, a number of unitary corners, and a number of subassemblies each comprising a combination of the planar members and the unitary corners. Each unitary corner comprises a unitary extrusion including a first planar portion and a second planar portion disposed perpendicularly with respect to the first planar portion. At least one of the subassemblies comprises a plurality of the unitary corners disposed side-by-side in an alternating opposing relationship. A plurality of the subassemblies can be combined to form a quarter perimeter segment of the core shroud. Four quarter perimeter segments join together to form the core shroud.Type: ApplicationFiled: July 29, 2013Publication date: December 19, 2013Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: CHARLES B. GILMORE, DAVID R. FORSYTH
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Patent number: 8532245Abstract: A core shroud is provided, which includes a number of planar members, a number of unitary corners, and a number of subassemblies each comprising a combination of the planar members and the unitary corners. Each unitary corner comprises a unitary extrusion including a first planar portion and a second planar portion disposed perpendicularly with respect to the first planar portion. At least one of the subassemblies comprises a plurality of the unitary corners disposed side-by-side in an alternating opposing relationship. A plurality of the subassemblies can be combined to form a quarter perimeter segment of the core shroud. Four quarter perimeter segments join together to form the core shroud.Type: GrantFiled: December 10, 2009Date of Patent: September 10, 2013Assignee: Westinghouse Electric Company LLCInventors: Charles B. Gilmore, David R. Forsyth
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Patent number: 8483347Abstract: In a pressurized water reactor with all of the in-core instrumentation gaining access to the core through the reactor head, each fuel assembly in which the instrumentation is introduced is aligned with an upper internals instrumentation guide-way. In the elevations above the upper internals upper support assembly, the instrumentation is protected and aligned by upper mounted instrumentation columns that are part of the instrumentation guide-way and extend from the upper support assembly towards the reactor head in hue with a corresponding head penetration. The upper mounted instrumentation columns are supported laterally at one end by an upper guide tube and at the other end by the upper support plate.Type: GrantFiled: April 10, 2007Date of Patent: July 9, 2013Assignee: Westinghouse Electric Company LLCInventors: Norman R. Singleton, David A. Altman, Ching Yu, James A. Rex, David R. Forsyth
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Patent number: 8393437Abstract: A method of designing/making an acoustic side branch resonator structured to be coupled to a standpipe of, for example, a nuclear power plant, wherein the acoustic side branch resonator includes a plurality of wire mesh elements for damping purposes. The method includes determining a resonant frequency of the standpipe, determining an active length of the acoustic side branch resonator using the resonant frequency, and determining a particular number of the wire mesh elements to be used in the acoustic side branch resonator and a pitch of each of the wire mesh elements using momentum and continuity equations of a compressible fluid.Type: GrantFiled: February 15, 2011Date of Patent: March 12, 2013Assignee: Westinghouse Electric Company LLCInventors: Gianluca Longoni, Younus Munsi, Robert C. Theuret, David R. Forsyth
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Publication number: 20120206011Abstract: A method of designing/making an acoustic side branch resonator structured to be coupled to a standpipe of, for example, a nuclear power plant, wherein the acoustic side branch resonator includes a plurality of wire mesh elements for damping purposes. The method includes determining a resonant frequency of the standpipe, determining an active length of the acoustic side branch resonator using the resonant frequency, and determining a particular number of the wire mesh elements to be used in the acoustic side branch resonator and a pitch of each of the wire mesh elements using momentum and continuity equations of a compressible fluid.Type: ApplicationFiled: February 15, 2011Publication date: August 16, 2012Applicant: Westinghouse Electric CompanyInventors: Gianluca Longoni, Younus Munsi, Robert C. Theuret, David R. Forsyth
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Publication number: 20100150298Abstract: A core shroud is provided, which includes a number of planar members, a number of unitary corners, and a number of subassemblies each comprising a combination of the planar members and the unitary corners. Each unitary corner comprises a unitary extrusion including a first planar portion and a second planar portion disposed perpendicularly with respect to the first planar portion. At least one of the subassemblies comprises a plurality of the unitary corners disposed side-by-side in an alternating opposing relationship. A plurality of the subassemblies can be combined to form a quarter perimeter segment of the core shroud. Four quarter perimeter segments join together to form the core shroud.Type: ApplicationFiled: December 10, 2009Publication date: June 17, 2010Applicant: Westinghouse Electric Company LLCInventors: Charles B. Gilmore, David R. Forsyth
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Publication number: 20090296877Abstract: An alignment plate that is attached to a core barrel of a pressurized water reactor and fits within slots within a top plate of a lower core shroud and upper core plate to maintain lateral alignment of the reactor internals. The alignment plate is connected to the core barrel through two vertically-spaced dowel pins that extend from the outside surface of the core barrel through a reinforcement pad and into corresponding holes in the alignment plate. Additionally, threaded fasteners are inserted around the perimeter of the reinforcement pad and into the alignment plate to further secure the alignment plate to the core barrel. A fillet weld also is deposited around the perimeter of the reinforcement pad. To accommodate thermal growth between the alignment plate and the core barrel, a gap is left above, below and at both sides of one of the dowel pins in the alignment plate holes through which the dowel pins pass.Type: ApplicationFiled: September 14, 2007Publication date: December 3, 2009Inventors: David A. Altman, David R. Forsyth, Richard E. Smith, Norman R. Singleton
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Publication number: 20080253497Abstract: In a pressurized water reactor with ail of the in-core instrumentation gaining access to the core through the reactor head, each fuel assembly in which the instrumentation is introduced is aligned with an upper internals instrumentation guide-way. In the elevations above the upper internals upper support assembly, the instrumentation is protected and aligned by upper mounted instrumentation columns that are part of the instrumentation guide-way and extend from the upper support assembly towards the reactor head in hue with a corresponding head penetration. The upper mounted instrumentation columns are supported laterally at one end by an upper guide tube and at the other end by the upper support plate.Type: ApplicationFiled: April 10, 2007Publication date: October 16, 2008Inventors: Norman R. Singleton, David A. Altman, Ching Yu, James A. Rex, David R. Forsyth
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Patent number: 7120219Abstract: A reactor pressure vessel supports the flanges of a core barrel assembly and an upper support plate. These flanges have aligned holes for diverting inlet coolant water to the vessel head for cooling the head. The aligned holes have different cross-sectional areas for controlling unexpected backflow of coolant water from the vessel head around the periphery of the upper support plate.Type: GrantFiled: November 5, 2004Date of Patent: October 10, 2006Assignee: Westinghouse Electric CO, LLCInventors: David R. Forsyth, David A. Altman, Kevin G. Bethune, Michael F. Hankinson, Robert H. McFetridge
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Patent number: 6888909Abstract: A reactor pressure vessel supports the flanges of a core barrel assembly and an upper support plate. These flanges have aligned holes for diverting inlet coolant water to the vessel head for cooling the head. The aligned holes have different cross-sectional areas for controlling unexpected backflow of coolant water from the vessel head around the periphery of the upper support plate.Type: GrantFiled: March 27, 2003Date of Patent: May 3, 2005Assignee: Westinghouse Electric Company LLCInventors: David R. Forsyth, David A. Altman, Kevin G. Bethune, Michael F. Hankinson, Robert H. McFetridge
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Publication number: 20030227992Abstract: A reactor pressure vessel supports the flanges of a core barrel assembly and an upper support plate. These flanges have aligned holes for diverting inlet coolant water to the vessel head for cooling the head. The aligned holes have different cross-sectional areas for controlling unexpected backflow of coolant water from the vessel head around the periphery of the upper support plate.Type: ApplicationFiled: March 27, 2003Publication date: December 11, 2003Inventors: David R. Forsyth, David A. Altman, Kevin G. Bethune, Michael F. Hankinson, Robert H. McFetridge
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Patent number: 5325407Abstract: Disclosed is a means for increasing coolant flow through the areas adjacent to where the removable top head closure is bolted to the body of pressurized water nuclear reactor. A circumferential plenum for coolant is provided between the upper flange of the core barrel, the inner wall of the pressure vessel body and the upper circular support plate and providing a plurality of orifices for coolant in the upper flange of the core barrel and the upper circular support plate whereby a coolant may be circulated through the core barrel flange, the circumferential plenum and the upper support plate and into the space enclosed by the removable top closure head.Type: GrantFiled: March 22, 1993Date of Patent: June 28, 1994Assignee: Westinghouse Electric CorporationInventors: David R. Forsyth, Bruce W. Bevilacqua, Charles H. Boyd, Gregory L. Calhoun