Patents by Inventor David W. Selfridge
David W. Selfridge 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).
-
Patent number: 10309032Abstract: This invention relates to compositions and methods for the at least partial dissolution, disruption and/or removal of deposit, such as scale and other deposit, from heat exchanger components. The heat exchanger components can include pressurized water reactor steam generators. In accordance with the invention, elemental metal is added locally to the surface of the deposit and/or anodic or cathodic current is applied locally to the deposit surface to destabilize or weaken the deposit. Subsequently, mechanical stress is applied to the weakened deposit to disrupt and remove the deposit from the surface of the heat exchanger component.Type: GrantFiled: March 23, 2016Date of Patent: June 4, 2019Assignee: Westinghouse Electric Company LLCInventors: Kurtis R. Crytzer, David W. Selfridge, Jr., Martin Legoff, Lauren R. Ikeda
-
Patent number: 9791145Abstract: A method and apparatus for manipulating a tool within the secondary side of a steam generator having a tube sheet with a tube bundle having a plurality of heat exchange tubes extending from the tube sheet in rows with an annulus extending around the heat exchange tubes on a periphery of the tube bundle, between the tubes and a wrapper which surrounds the tube bundle. A robot is introduced into the annulus and extends a probe with a tool across selected lanes between the rows of tubes. A method and apparatus is also disclosed for cleaning sludge from the top of a tube sheet that includes introducing a moveable suction apparatus having attached vacuum inlets into either the no tube lane or the circumferential annulus and sludge vacuuming the top of the tube sheet.Type: GrantFiled: July 23, 2014Date of Patent: October 17, 2017Assignee: Westinghouse Electric Company LLCInventors: David W. Selfridge, Jr., Martin Le Goff
-
Publication number: 20160201214Abstract: This invention relates to compositions and methods for the at least partial dissolution, disruption and/or removal of deposit, such as scale and other deposit, from heat exchanger components. The heat exchanger components can include pressurized water reactor steam generators. In accordance with the invention, elemental metal is added locally to the surface of the deposit and/or anodic or cathodic current is applied locally to the deposit surface to destabilize or weaken the deposit. Subsequently, mechanical stress is applied to the weakened deposit to disrupt and remove the deposit from the surface of the heat exchanger component.Type: ApplicationFiled: March 23, 2016Publication date: July 14, 2016Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: KURTIS R. CRYTZER, DAVID W. SELFRIDGE, JR., MARTIN LEGOFF, LAUREN R. IKEDA
-
Patent number: 9334579Abstract: This invention relates to compositions and methods for the at least partial dissolution, disruption and/or removal of deposit, such as scale and other deposit, from heat exchanger components. The heat exchanger components can include pressurized water reactor steam generators. In accordance with the invention, elemental metal is added locally to the surface of the deposit and/or anodic or cathodic current is applied locally to the deposit surface to destabilize or weaken the deposit. Subsequently, mechanical stress is applied to the weakened deposit to disrupt and remove the deposit from the surface of the heat exchanger component.Type: GrantFiled: October 29, 2013Date of Patent: May 10, 2016Assignee: Westinghouse Electric Company LLCInventors: Kurtis R. Crytzer, David W. Selfridge, Jr., Martin Legoff, Lauren R. Ikeda
-
Publication number: 20150114845Abstract: This invention relates to compositions and methods for the at least partial dissolution, disruption and/or removal of deposit, such as scale and other deposit, from heat exchanger components. The heat exchanger components can include pressurized water reactor steam generators. In accordance with the invention, elemental metal is added locally to the surface of the deposit and/or anodic or cathodic current is applied locally to the deposit surface to destabilize or weaken the deposit. Subsequently, mechanical stress is applied to the weakened deposit to disrupt and remove the deposit from the surface of the heat exchanger component.Type: ApplicationFiled: October 29, 2013Publication date: April 30, 2015Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: KURTIS R. CRYTZER, David W. Selfridge, JR., Martin Legoff, Lauren R. Ikeda
-
Publication number: 20140360443Abstract: A method and apparatus for manipulating a tool within the secondary side of a steam generator having a tube sheet with a tube bundle having a plurality of heat exchange tubes extending from the tube sheet in rows with an annulus extending around the heat exchange tubes on a periphery of the tube bundle, between the tubes and a wrapper which surrounds the tube bundle. A robot is introduced into the annulus and extends a probe with a tool across selected lanes between the rows of tubes. A method and apparatus is also disclosed for cleaning sludge from the top of a tube sheet that includes introducing a moveable suction apparatus having attached vacuum inlets into either the no tube lane or the circumferential annulus and sludge vacuuming the top of the tube sheet.Type: ApplicationFiled: July 23, 2014Publication date: December 11, 2014Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: David W. Selfridge, JR., Martin Le Goff
-
Publication number: 20140261246Abstract: A method of cleaning sludge from the top of tube sheet (34?) of a nuclear steam generator (10) includes introducing a moveable suction apparatus (120) having attached vacuum inlets (148), said moveable suction apparatus introduced through handholes (62) in the side of the generator and into either the no tube lane (60) or the circumferential annulus, and sludge vacuuming the top of the tube sheet (34?).Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: Westinghouse Electric Company LLCInventors: David W. Selfridge, JR., Martin Le Goff
-
Patent number: 8800499Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: GrantFiled: April 1, 2011Date of Patent: August 12, 2014Assignee: Westinghouse Electric Company LLCInventors: Phillip J. Hawkins, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Patent number: 8800500Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: GrantFiled: April 1, 2011Date of Patent: August 12, 2014Assignee: Westinghouse Electric Company LLCInventors: Phillip J. Hawkins, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Patent number: 8757104Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: GrantFiled: April 1, 2011Date of Patent: June 24, 2014Assignee: Westinghouse Electric Company LLCInventors: Phillip J. Hawkins, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Patent number: 8752511Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: GrantFiled: April 1, 2011Date of Patent: June 17, 2014Assignee: Westinghouse Electric Company LLCInventors: Phillip J. Hawkins, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Patent number: 8646416Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: GrantFiled: November 2, 2010Date of Patent: February 11, 2014Assignee: Westinghouse Electric Company LLCInventors: Phillip J. Hawkins, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Publication number: 20110185988Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: ApplicationFiled: April 1, 2011Publication date: August 4, 2011Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: Phillip J. Hawkins, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Publication number: 20110185989Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: ApplicationFiled: April 1, 2011Publication date: August 4, 2011Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: Phillip J. Hawkins, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Publication number: 20110180022Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: ApplicationFiled: April 1, 2011Publication date: July 28, 2011Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: PHILLIP J. HAWKINS, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Publication number: 20110180021Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: ApplicationFiled: April 1, 2011Publication date: July 28, 2011Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: PHILLIP J. HAWKINS, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge
-
Publication number: 20110079186Abstract: A miniature sludge lance for a steam generator in a pressurized water nuclear reactor is provided. The sludge lance is structured to enter the steam generator via an inspection opening and has a body sufficiently thin to fit between adjacent tubes. The sludge lance rail has at least two types of nozzle assemblies that may be attached thereto. One nozzle assembly rotates and another nozzle assembly translates in a vertical direction. A drive assembly, a mounting assembly, an oscillation assembly, and flow straighteners are also provided.Type: ApplicationFiled: November 2, 2010Publication date: April 7, 2011Applicant: WESTINGHOUSE ELECTRIC COMPANY LLCInventors: Phillip J. Hawkins, Eric R. Haberman, Jerod J. Rudish, David W. Selfridge