Patents by Inventor Adrian M. Mistreanu
Adrian M. Mistreanu 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: 11657923Abstract: A feedwater sparger repair assembly includes a cover plate having a partial cylindrical shape and having a nozzle opening and a pair of bolt openings extending through the cover plate. A nozzle is attached to the cover plate and surrounds the nozzle opening. A pair of T-bolts extend through a respective one of the pair of bolt openings and each include a shank having a threaded portion extending from an exterior side of the cover plate and a partial cylindrical head portion disposed at an end of the shank on an interior side of the cover plate. A pair of nuts are engaged with the threaded portion of the pair of T-bolts. The feedwater sparger repair assembly is adapted to be mounted to an opening that is cut into a core spray pipe in order to repair/replace a sparger that becomes cracked.Type: GrantFiled: December 21, 2021Date of Patent: May 23, 2023Assignee: GE-Hitachi Nuclear Energy Americas LLCInventors: Bruce John Lentner, Adrian M. Mistreanu, Jack Toshio Matsumoto
-
Publication number: 20220406479Abstract: According to at least some example embodiments, a dome collector separation stage includes an inner side wall that defines an inner channel; and an outer side wall that, together with the inner side wall, defines an outer channel, the inner channel being configured to receive a two-phase flow stream (FS) of water and steam, and pass the two-phase FS to the outer channel via inlets included in the inner side wall, the outer channel being configured to separate at least some water from the two-phase FS, and pass moisture-reduced steam out of the steam separator stage via outlets included in the outer side wall.Type: ApplicationFiled: July 18, 2022Publication date: December 22, 2022Applicant: GE-Hitachi Nuclear Energy Americas LLCInventors: Adrian M. MISTREANU, James Scott BOWMAN, John S. BENNION, Phillip Glen ELLISON, Bulent ALPAY
-
Patent number: 11398317Abstract: According to at least some example embodiments, a dome collector separation stage includes an inner side wall that defines an inner channel; and an outer side wall that, together with the inner side wall, defines an outer channel, the inner channel being configured to receive a two-phase flow stream (FS) of water and steam, and pass the two-phase FS to the outer channel via inlets included in the inner side wall, the outer channel being configured to separate at least some water from the two-phase FS, and pass moisture-reduced steam out of the steam separator stage via outlets included in the outer side wall.Type: GrantFiled: January 7, 2020Date of Patent: July 26, 2022Assignee: GE-HITACHI NUCLEAR ENERGY AMERICAS LLCInventors: Adrian M. Mistreanu, James Scott Bowman, John S. Bennion, Phillip Glen Ellison, Bulent Alpay
-
Publication number: 20220115154Abstract: A feedwater sparger repair assembly includes a cover plate having a partial cylindrical shape and having a nozzle opening and a pair of bolt openings extending through the cover plate. A nozzle is attached to the cover plate and surrounds the nozzle opening. A pair of T-bolts extend through a respective one of the pair of bolt openings and each include a shank having a threaded portion extending from an exterior side of the cover plate and a partial cylindrical head portion disposed at an end of the shank on an interior side of the cover plate. A pair of nuts are engaged with the threaded portion of the pair of T-bolts. The feedwater sparger repair assembly is adapted to be mounted to an opening that is cut into a core spray pipe in order to repair/replace a sparger that becomes cracked.Type: ApplicationFiled: December 21, 2021Publication date: April 14, 2022Applicant: GE-Hitachi Nuclear Energy Americas LLCInventors: Bruce John LENTNER, Adrian M. MISTREANU, Jack Toshio MATSUMOTO
-
Patent number: 11232875Abstract: A feedwater sparger repair assembly includes a cover plate having a partial cylindrical shape and having a nozzle opening and a pair of bolt openings extending through the cover plate. A nozzle is attached to the cover plate and surrounds the nozzle opening. A pair of T-bolts extend through a respective one of the pair of bolt openings and each include a shank having a threaded portion extending from an exterior side of the cover plate and a partial cylindrical head portion disposed at an end of the shank on an interior side of the cover plate. A pair of nuts are engaged with the threaded portion of the pair of T-bolts. The feedwater sparger repair assembly is adapted to be mounted to an opening that is cut into a core spray pipe in order to repair/replace a sparger that becomes cracked.Type: GrantFiled: April 11, 2019Date of Patent: January 25, 2022Assignee: GE-Hitachi Nuclear Energy Americas LLCInventors: Bruce John Lentner, Adrian M. Mistreanu, Jack Toshio Matsumoto
-
Patent number: 11232874Abstract: A flow restrictor nozzle for a pressurized vessel of a nuclear reactor may comprise a nozzle body including an inlet face and an outlet face. The nozzle body may define a plurality of internal flow paths extending from the inlet face to the outlet face. Each of the plurality of internal flow paths may include a convergent section, a throat section, and a divergent section.Type: GrantFiled: December 18, 2017Date of Patent: January 25, 2022Assignee: GE-Hitachi Nuclear Energy Americas LLCInventors: Joel Patrick Melito, Randy Morris Brown, Zhe Zhang, Robin D. Sprague, Adrian M. Mistreanu, Gerald A. Deaver
-
Patent number: 10847273Abstract: A steam separation system includes a standpipe configured to receive a gas-liquid two-phase flow stream and a diffuser configured to receive the gas-liquid two-phase flow stream from the standpipe. The diffuser includes a swirler configured to separate the gas-liquid two-phase flow stream. The swirler includes a plurality of swirler vanes and a straightener structure. The straightener structure includes a hub. The plurality of swirler vanes is mounted radially around the hub, and a straightener extends in an upward direction from the hub. The system also includes a separation barrel configured to receive the gas-liquid two-phase flow stream from the swirler. The separation barrel includes a rifled channel having orifices along an inner surface thereof. The plurality of swirler vanes is tuned with the rifled channel, such that an angle of each of the plurality of vanes corresponds to an angle of the rifled channel.Type: GrantFiled: January 17, 2014Date of Patent: November 24, 2020Assignee: GE-HITACHI NUCLEAR ENERGY AMERICAS LLCInventors: Phillip Glen Ellison, Adrian M. Mistreanu, Bobby Glen Malone, John S. Bennion, Bulent Alpay, Michael L. James
-
Publication number: 20200328003Abstract: A feedwater sparger repair assembly includes a cover plate having a partial cylindrical shape and having a nozzle opening and a pair of bolt openings extending through the cover plate. A nozzle is attached to the cover plate and surrounds the nozzle opening. A pair of T-bolts extend through a respective one of the pair of bolt openings and each include a shank having a threaded portion extending from an exterior side of the cover plate and a partial cylindrical head portion disposed at an end of the shank on an interior side of the cover plate. A pair of nuts are engaged with the threaded portion of the pair of T-bolts. The feedwater sparger repair assembly is adapted to be mounted to an opening that is cut into a core spray pipe in order to repair/replace a sparger that becomes cracked.Type: ApplicationFiled: April 11, 2019Publication date: October 15, 2020Applicant: GE-Hitachi Nuclear Energy Americas LLCInventors: Bruce John LENTNER, Adrian M. MISTREANU, Jack Toshio MATSUMOTO
-
Publication number: 20200152342Abstract: According to at least some example embodiments, a dome collector separation stage includes an inner side wall that defines an inner channel; and an outer side wall that, together with the inner side wall, defines an outer channel, the inner channel being configured to receive a two-phase flow stream (FS) of water and steam, and pass the two-phase FS to the outer channel via inlets included in the inner side wall, the outer channel being configured to separate at least some water from the two-phase FS, and pass moisture-reduced steam out of the steam separator stage via outlets included in the outer side wall.Type: ApplicationFiled: January 7, 2020Publication date: May 14, 2020Applicant: GE-Hitachi Nuclear Energy Americas LLCInventors: Adrian M. MISTREANU, James Scott Bowman, John S. Bennion, Phillip Glen Ellison, Bulent Alpay
-
Patent number: 10573420Abstract: According to at least some example embodiments, a dome collector separation stage includes an inner side wall that defines an inner channel; and an outer side wall that, together with the inner side wall, defines an outer channel, the inner channel being configured to receive a two-phase flow stream (FS) of water and steam, and pass the two-phase FS to the outer channel via inlets included in the inner side wall, the outer channel being configured to separate at least some water from the two-phase FS, and pass moisture-reduced steam out of the steam separator stage via outlets included in the outer side wall.Type: GrantFiled: April 20, 2017Date of Patent: February 25, 2020Assignee: GE-HITACHI NUCLEAR ENERGY AMERICAS LLCInventors: Adrian M. Mistreanu, James Scott Bowman, John S. Bennion, Phillip Glen Ellison, Bulent Alpay
-
Publication number: 20190189297Abstract: A flow restrictor nozzle for a pressurized vessel of a nuclear reactor may comprise a nozzle body including an inlet face and an outlet face. The nozzle body may define a plurality of internal flow paths extending from the inlet face to the outlet face. Each of the plurality of internal flow paths may include a convergent section, a throat section, and a divergent section.Type: ApplicationFiled: December 18, 2017Publication date: June 20, 2019Inventors: Joel Patrick Melito, Randy Morris Brown, Zhe Zhang, Robin D. Sprague, Adrian M. Mistreanu, Gerald A. Deaver
-
Publication number: 20180308591Abstract: According to at least some example embodiments, a dome collector separation stage includes an inner side wall that defines an inner channel; and an outer side wall that, together with the inner side wall, defines an outer channel, the inner channel being configured to receive a two-phase flow stream (FS) of water and steam, and pass the two-phase FS to the outer channel via inlets included in the inner side wall, the outer channel being configured to separate at least some water from the two-phase FS, and pass moisture-reduced steam out of the steam separator stage via outlets included in the outer side wall.Type: ApplicationFiled: April 20, 2017Publication date: October 25, 2018Applicant: GE-Hitachi Nuclear Energy Americas LLCInventors: Adrian M. MISTREANU, James Scott BOWMAN, John S. BENNION, Phillip Glen ELLISON, Bulent ALPAY
-
Patent number: 10049775Abstract: In one embodiment, the steam separation system includes a plurality of steam separators configured to separate liquid from a gas-liquid two-phase flow stream; and a steam dryer system disposed above the steam separators. The steam dryer system includes a plurality of steam dryer bank assemblies and at least one moisture trap. Each of the steam dryer bank assemblies is configured to separate liquid of the gas-liquid two-phase flow stream exiting the steam separators. The moisture trap is disposed next to one of the steam dryer bank assemblies and is configured to remove liquid from the gas-liquid two-phase flow stream.Type: GrantFiled: April 29, 2014Date of Patent: August 14, 2018Assignee: GE-Hitachi Nuclear Energy Americas LLCInventors: Bulent Alpay, Adrian M. Mistreanu, Phillip Glen Ellison, Bobby Glen Malone, John S. Bennion, Michael L. James
-
Swirler, steam separator including the swirler, and nuclear boiling water reactor including the same
Patent number: 9916909Abstract: In one embodiment, the steam separator includes a standpipe configured to receive a gas-liquid two-phase flow stream, and a first swirler configured to receive the gas-liquid two-phase flow stream from the standpipe. The first swirler is configured to separate the gas-liquid two-phase flow stream. The first swirler includes a direct flow portion and an indirect flow portion. The direct flow portion has a direct flow channel for permitting direct flow of the gas-liquid two-phase flow stream through the first swirler, and the indirect flow portion has at least one indirect flow channel defined by at least one vane in the first swirler for providing an indirect flow of the gas-liquid two-phase flow stream through the first swirler.Type: GrantFiled: December 31, 2014Date of Patent: March 13, 2018Assignee: GE-Bitachi Nuclear Energy Americas LLCInventors: Adrian M. Mistreanu, James Scott Bowman, Phillip Glen Ellison, John S. Bennion, Bulent Alpay -
SWIRLER, STEAM SEPARATOR INCLUDING THE SWIRLER, AND NUCLEAR BOILING WATER REACTOR INCLUDING THE SAME
Publication number: 20160189810Abstract: In one embodiment, the steam separator includes a standpipe configured to receive a gas-liquid two-phase flow stream, and a first swirler configured to receive the gas-liquid two-phase flow stream from the standpipe. The first swirler is configured to separate the gas-liquid two-phase flow stream. The first swirler includes a direct flow portion and an indirect flow portion. The direct flow portion has a direct flow channel for permitting direct flow of the gas-liquid two-phase flow stream through the first swirler, and the indirect flow portion has at least one indirect flow channel defined by at least one vane in the first swirler for providing an indirect flow of the gas-liquid two-phase flow stream through the first swirler.Type: ApplicationFiled: December 31, 2014Publication date: June 30, 2016Inventors: Adrian M. MISTREANU, James Scott BOWMAN, Phillip Glen ELLISON, John S. BENNION, Bulent ALPAY -
Publication number: 20150310944Abstract: In one embodiment, the steam separation system includes a plurality of steam separators configured to separate liquid from a gas-liquid two-phase flow stream; and a steam dryer system disposed above the steam separators. The steam dryer system includes a plurality of steam dryer bank assemblies and at least one moisture trap. Each of the steam dryer bank assemblies is configured to separate liquid of the gas-liquid two-phase flow stream exiting the steam separators. The moisture trap is disposed next to one of the steam dryer bank assemblies and is configured to remove liquid from the gas-liquid two-phase flow stream.Type: ApplicationFiled: April 29, 2014Publication date: October 29, 2015Applicant: GE-Hitachi Nuclear Energy Americas LLCInventors: Bulent ALPAY, Adrian M. MISTREANU, Phillip Glen ELLISON, Bobby Glen MALONE, John S. BENNION, Michael L. JAMES
-
Publication number: 20150206606Abstract: A steam separation system includes a standpipe configured to receive a gas-liquid two-phase flow stream, a first diffuser configured to receive the gas-liquid two-phase flow stream from the standpipe, the first diffuser including a swirler configured to separate the gas-liquid two-phase flow stream, and a separation barrel configured to receive the gas-liquid two-phase flow stream from the swirler, the separation barrel including a rifled channel having orifices along an inner surface thereof.Type: ApplicationFiled: January 17, 2014Publication date: July 23, 2015Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLCInventors: Phillip Glen ELLISON, Adrian M. MISTREANU, Bobby Glen MALONE, John S. BENNION, Bulent ALPAY, Michael L. JAMES
-
Patent number: 8797021Abstract: An electrochemical corrosion potential (ECP) probe assembly for monitoring ECP in a high velocity reactor line includes an airfoil shaped ECP cover that improves the streamlines over and around an ECP sensor. The airfoil shaped cover includes flow holes drilled normal to the surface of the ECP cover. As such, the direction of flow of reactor water into the ECP probe assembly is altered to reduce the flow rate internal to the ECP cover sufficiently to prevent damage to the ECP probes. To facilitate use as a retrofit component, the ECP cover may have an elliptical section that is contiguous to a circular section that conforms to the geometry of existing probe wells and probe sub-assemblies.Type: GrantFiled: February 14, 2011Date of Patent: August 5, 2014Assignee: GE-Hitachi Nuclear Energy Americas LLCInventors: Theron D. Marshall, Adrian M. Mistreanu, Angelito Foz Gonzaga, John S. Bennion
-
Publication number: 20120206128Abstract: An electrochemical corrosion potential (ECP) probe assembly for monitoring ECP in a high velocity reactor line includes an airfoil shaped ECP cover that improves the streamlines over and around an ECP sensor. The airfoil shaped cover includes flow holes drilled normal to the surface of the ECP cover. As such, the direction of flow of reactor water into the ECP probe assembly is altered to reduce the flow rate internal to the ECP cover sufficiently to prevent damage to the ECP probes. To facilitate use as a retrofit component, the ECP cover may have an elliptical section that is contiguous to a circular section that conforms to the geometry of existing probe wells and probe sub-assemblies.Type: ApplicationFiled: February 14, 2011Publication date: August 16, 2012Inventors: Theron D. Marshall, Adrian M. Mistreanu, Angelito Foz Gonzaga, John S. Bennion