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Proceedings Papers

Valve Failures and Suggested Remedies

Proc. ASME. PVP2021, Volume 5: Operations, Applications, and Components; Seismic Engineering; Non-Destructive Examination, V005T07A010, July 13–15, 2021

Paper No: PVP2021-61193

DOI: https://doi.org/10.1115/PVP2021-61193

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Topics: Engineering standards, Failure, Valves

Proceedings Papers

An Assessment of Engineering Knowledge Management Regarding Retention and Maintenance

Ronald S. Farrell, L. Ike Ezekoye

Proc. ASME. PVP2021, Volume 5: Operations, Applications, and Components; Seismic Engineering; Non-Destructive Examination, V005T07A011, July 13–15, 2021

Paper No: PVP2021-61964

DOI: https://doi.org/10.1115/PVP2021-61964

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Topics: Knowledge management, Maintenance, Engineers, Computers, Engineering instruments, Natural, scientific and engineering processes and practices

Proceedings Papers

Check Valves in Nuclear Power Plants: ASME OM Code Requirements and Industry Compliance

L. Ike Ezekoye, Mark Rain, Theodore E. Thygesen

Proc. ASME. PVP2020, Volume 8: Operations, Applications, and Components, V008T08A018, August 3, 2020

Paper No: PVP2020-21315

DOI: https://doi.org/10.1115/PVP2020-21315

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Topics: Nuclear power stations, Valves, Nuclear industry, Design, Failure, Maintenance, Pressure, Reliability, Safety

Proceedings Papers

Valve Modeling Methods for Modal Analysis

Ronald Farrell, L. Ike Ezekoye

Proc. ASME. PVP2019, Volume 7: Operations, Applications, and Components, V007T07A014, July 14–19, 2019

Paper No: PVP2019-93904

DOI: https://doi.org/10.1115/PVP2019-93904

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Topics: Modal analysis, Modeling, Valves, Geometry, Solid modeling, Computer software, Feedback, Finite element analysis, Manufacturing, Piping systems

Proceedings Papers

Qualification of Motor Actuated Valve Assemblies for Safety Related Nuclear Applications: Lessons Learned

Ronald Farrell, L. Ike Ezekoye

Proc. ASME. PVP2018, Volume 7: Operations, Applications, and Components, V007T07A025, July 15–20, 2018

Paper No: PVP2018-85040

DOI: https://doi.org/10.1115/PVP2018-85040

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Topics: Engines, Motors, Safety, Valves, Electrical components, Nuclear power stations, Actuators, Electric motors, Manufacturing, Testing

Proceedings Papers

Long Term Operation of Safety Valves at Pressures Near the Set Pressure

L. Ike Ezekoye, Thomas Beagen, Brian S. Gordon, John W. Boufford

Proc. ASME. PVP2017, Volume 7: Operations, Applications and Components, V007T07A021, July 16–20, 2017

Paper No: PVP2017-66040

DOI: https://doi.org/10.1115/PVP2017-66040

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Topics: Pressure, Safety, Valves, Transients (Dynamics), Accidents, Design, Leakage, Nuclear power stations, Steam

Proceedings Papers

Check Valve Flow and Disk Lift Simulation Using CFD

Ronald Farrell, L. Ike Ezekoye, Mark Rain

Proc. ASME. PVP2017, Volume 7: Operations, Applications and Components, V007T07A022, July 16–20, 2017

Paper No: PVP2017-66269

DOI: https://doi.org/10.1115/PVP2017-66269

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Topics: Computational fluid dynamics, Disks, Flow (Dynamics), Simulation, Valves, Testing, Design, Finite element analysis, Manufacturing, Optimization

Proceedings Papers

Failure Analysis Prediction Versus Industry Failure Experience of Air Operated Valves in the Nuclear Industry

L. Ike Ezekoye

Proc. ASME. PVP2016, Volume 7: Operations, Applications and Components, V007T07A022, July 17–21, 2016

Paper No: PVP2016-63852

DOI: https://doi.org/10.1115/PVP2016-63852

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Topics: Failure, Failure analysis, Nuclear industry, Valves, Safety, ASME Standards, Design, Testing, ASME Boiler and Pressure Vessel Code, Engineers

Proceedings Papers

Balanced and Standard Globe Valves Operating Load Profiles With Flow Over the Discs/Plugs

L. Ike Ezekoye, Terrence J. Matty, Matt Hobbs, Ronald S. Farrell

Proc. ASME. PVP2015, Volume 7: Operations, Applications and Components, V007T07A025, July 19–23, 2015

Paper No: PVP2015-45932

DOI: https://doi.org/10.1115/PVP2015-45932

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Topics: Disks, Flow (Dynamics), Stress, Valves, Actuators, Pressure, Electric motors, Peak load

Proceedings Papers

A Comparative Study of Valve Natural Frequency Estimation Using Finite Element Analysis (FEA), Raleigh’s Principles and Laboratory Tests

L. Ike Ezekoye, Preston A. Vock, Ronald S. Farrell, Richard J. Gradle

Proc. ASME. PVP2014, Volume 7: Operations, Applications and Components, V007T07A016, July 20–24, 2014

Paper No: PVP2014-28095

DOI: https://doi.org/10.1115/PVP2014-28095

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Topics: Finite element analysis, Valves, Testing, Design, Pipes, Resonance, Safety, Boundary-value problems, Damage, Inertia (Mechanics)

Journal Articles

ASME Section III Treatment of Stress Distribution in Cylindrical Vessels With Symmetric Thin-Walled Discontinuity

L. Ike Ezekoye, Gerald A. Riegel, David Ristau, Richard Way

J. Pressure Vessel Technol. June 2014, 136(3): 031601.

Paper No: PVT-11-1055

DOI: https://doi.org/10.1115/1.4024863

Published Online: May 2, 2014

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Topics: Stress, Pressure, Design

Proceedings Papers

An Enhanced Methodology for Estimating the Natural Frequency of Valves Using Raleigh’s Energy Principle

L. Ike Ezekoye, Ronald S. Farrell, Preston A. Vock, Richard J. Gradle

Proc. ASME. PVP2013, Volume 7: Operations, Applications and Components, V007T07A002, July 14–18, 2013

Paper No: PVP2013-97240

DOI: https://doi.org/10.1115/PVP2013-97240

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Topics: Valves, Testing, Actuators, Center of mass, Dynamics (Mechanics), Inertia (Mechanics), Kinetic energy, Manufacturing, Nuclear power stations, Potential energy

Proceedings Papers

Managing Check Valve Flange Leaks: Technical Solutions and Challenges to Overcome

L. Ike Ezekoye, William E. Densmore, William M. Turkowski, Robert E. Becse

Proc. ASME. PVP2012, Volume 7: Operations, Applications and Components, 145-150, July 15–19, 2012

Paper No: PVP2012-78780

DOI: https://doi.org/10.1115/PVP2012-78780

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Topics: Flanges, Leakage, Valves, Failure, Maintenance, Containment, Engines, Hazards, In-service testing, Motors

Proceedings Papers

Development of an ASME QME-1-2007 Program for Safety Related Active Valve Assemblies for Advanced Plants

L. Ike Ezekoye, Edward W. Drake

Proc. ASME. PVP2011, Volume 7: Operations, Applications, and Components, 251-254, July 17–21, 2011

Paper No: PVP2011-57722

DOI: https://doi.org/10.1115/PVP2011-57722

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Topics: Safety, Valves, Nuclear power stations, Manufacturing, Equipment qualification, Valve actuators

Proceedings Papers

Snapshot Review of the Regulation of Gas Voids in Nuclear Steam Supply Systems in the United States

L. Ike Ezekoye, William M. Turkowski

Proc. ASME. ICONE18, 18th International Conference on Nuclear Engineering: Volume 1, 335-343, May 17–21, 2010

Paper No: ICONE18-30240

DOI: https://doi.org/10.1115/ICONE18-30240

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Topics: Steam, Design, Emergency core cooling systems, Containment, Corrective actions, Heat, Licensing, Nuclear power stations, Pumps, Sprays

Proceedings Papers

ASME Section III Treatment of Stress Distribution in Cylindrical Vessels With Symmetric Thin-Walled Discontinuity

L. Ike Ezekoye, Gerald A. Riegel, David Ristau, Richard Way

Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 7, 289-296, July 18–22, 2010

Paper No: PVP2010-25987

DOI: https://doi.org/10.1115/PVP2010-25987

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Topics: Stress concentration, Vessels, Design, Stress, Rupture, Finite element analysis, Pressure, Valves, Actuators, ASME Standards

Proceedings Papers

An Integrated Approach for Monitoring Gas Accumulation in Safety Related Systems

L. Ike Ezekoye, Ryan D. Griffin, William M. Turkowski, Gregory R. Williams

Proc. ASME. PVP2009, Volume 7: Operations, Applications and Components, 53-60, July 26–30, 2009

Paper No: PVP2009-77957

DOI: https://doi.org/10.1115/PVP2009-77957

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Topics: Safety, Pumps, Design, Pipes, Emergency core cooling systems, Gases, Containment, Damage, Flow (Dynamics), Heat

Proceedings Papers

Estimating ASME Section III and VIII Heat Exchanger Nozzle Loads

L. Ike Ezekoye, Colin Arnold

Proc. ASME. PVP2009, Volume 7: Operations, Applications and Components, 45-52, July 26–30, 2009

Paper No: PVP2009-77829

DOI: https://doi.org/10.1115/PVP2009-77829

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Topics: Heat exchangers, Nozzles, Stress, Design, Acceptance criteria, Geometry, Heat, Materials properties, Pipes, Power stations

Proceedings Papers

An Evaluation of Post-LOCA Debris on Multi-Stage Safety-Related Pumps in PWR ECCS in Support of Generic Safety Issue 191 Closure

L. Ike Ezekoye, Rolv Hundal, Paul V. Pyle

Proc. ASME. PVP2008, Volume 7: Operations, Applications and Components, 323-328, July 27–31, 2008

Paper No: PVP2008-61766

DOI: https://doi.org/10.1115/PVP2008-61766

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Topics: Emergency core cooling systems, Pressurized water reactors, Pumps, Safety, Wear, Accidents, Containment, Coolants, Cooling, Containment buildings

Proceedings Papers

Characterization of the Performance of Coupled Heat Exchangers With an Intermediate Heat Load

L. Ike Ezekoye, Stephen R. Swantner

Proc. ASME. PVP2002, Piping and Component Analysis and Diagnosis, 9-15, August 5–9, 2002

Paper No: PVP2002-1511

DOI: https://doi.org/10.1115/PVP2002-1511

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Topics: Heat, Heat exchangers, Stress, Design, Engineers, Heat transfer

Journal citation

NARROW

Valve Failures and Suggested Remedies

An Assessment of Engineering Knowledge Management Regarding Retention and Maintenance

Check Valves in Nuclear Power Plants: ASME OM Code Requirements and Industry Compliance

Valve Modeling Methods for Modal Analysis

Qualification of Motor Actuated Valve Assemblies for Safety Related Nuclear Applications: Lessons Learned

Long Term Operation of Safety Valves at Pressures Near the Set Pressure

Check Valve Flow and Disk Lift Simulation Using CFD

Failure Analysis Prediction Versus Industry Failure Experience of Air Operated Valves in the Nuclear Industry

Balanced and Standard Globe Valves Operating Load Profiles With Flow Over the Discs/Plugs

A Comparative Study of Valve Natural Frequency Estimation Using Finite Element Analysis (FEA), Raleigh’s Principles and Laboratory Tests

ASME Section III Treatment of Stress Distribution in Cylindrical Vessels With Symmetric Thin-Walled Discontinuity

An Enhanced Methodology for Estimating the Natural Frequency of Valves Using Raleigh’s Energy Principle

Managing Check Valve Flange Leaks: Technical Solutions and Challenges to Overcome

Development of an ASME QME-1-2007 Program for Safety Related Active Valve Assemblies for Advanced Plants

Snapshot Review of the Regulation of Gas Voids in Nuclear Steam Supply Systems in the United States

ASME Section III Treatment of Stress Distribution in Cylindrical Vessels With Symmetric Thin-Walled Discontinuity

An Integrated Approach for Monitoring Gas Accumulation in Safety Related Systems

Estimating ASME Section III and VIII Heat Exchanger Nozzle Loads

An Evaluation of Post-LOCA Debris on Multi-Stage Safety-Related Pumps in PWR ECCS in Support of Generic Safety Issue 191 Closure

Characterization of the Performance of Coupled Heat Exchangers With an Intermediate Heat Load

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