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Proceedings Papers

Evaluation of Flashing Jet Impact on Surroundings Due to Leakage of High Pressure Pipes

Tomohisa Yuasa, Shun Watanabe, Ryo Morita

Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A006, July 17–22, 2022

Paper No: PVP2022-80253

DOI: https://doi.org/10.1115/PVP2022-80253

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Topics: Computational fluid dynamics, Flashing, High pressure (Physics), Leakage, Pipes, Water

Proceedings Papers

Development of Predictive Evaluation Methods of Pipe Wall Thinning by Flow Accelerated Corrosion at Drift Region in Junction Piping

Shun Watanabe, Ryo Morita

Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A047, July 17–22, 2022

Paper No: PVP2022-84566

DOI: https://doi.org/10.1115/PVP2022-84566

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Topics: Corrosion, Evaluation methods, Flow (Dynamics), Junctions, Pipes, Wall thickness, Mass transfer, Numerical analysis, Power stations, Reynolds number

Proceedings Papers

Simplified Elastic-Plastic Analysis Method for Piping Systems Based on Linear Time History Analysis

Yohei Ono, Michiya Sakai, Ryuya Shimazu, Fumio Inada, Ryo Morita, Yuta Uchiyama

Proc. ASME. PVP2022, Volume 5: Operations, Applications, and Components; Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V005T08A001, July 17–22, 2022

Paper No: PVP2022-81651

DOI: https://doi.org/10.1115/PVP2022-81651

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Topics: Density, Earthquakes, Piping systems

Proceedings Papers

New Evaluation Method for Seismic Fatigue Damage of Plant Pipeline (Quantitative Performance and Consideration of Application)

Fumio Inada, Michiya Sakai, Ryo Morita, Ichiro Tamura

Paper No: PVP2022-84154

DOI: https://doi.org/10.1115/PVP2022-84154

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Topics: Evaluation methods, Fatigue damage, Pipelines

Proceedings Papers

Effect of Peak Excitation Frequency on Seismic Fatigue Damage of Plant Pipelines

Fumio Inada, Michiya Sakai, Ryo Morita, Ichiro Tamura

Proc. ASME. PVP2020, Volume 9: Seismic Engineering, V009T09A004, August 3, 2020

Paper No: PVP2020-21407

DOI: https://doi.org/10.1115/PVP2020-21407

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Topics: Earthquakes, Excitation, Fatigue damage, Pipelines, Vibration

Journal Articles

Combined Effects of Steam Wetness and Pressure on Characteristics of Acoustic Resonance Amplitude in Closed Side Branch

Yuta Uchiyama, Ryo Morita

J. Pressure Vessel Technol. February 2021, 143(1): 011402.

Paper No: PVT-19-1179

DOI: https://doi.org/10.1115/1.4047648

Published Online: August 5, 2020

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Topics: Flow (Dynamics), Pressure, Steam, Resonance, Acoustics

Journal Articles

Evaluation Method for Seismic Fatigue Damage of Plant Pipeline

Fumio Inada, Michiya Sakai, Ryo Morita, Ichiro Tamura, Shin-ichi Matsuura, Kiyoshi Saito, Yasuki Ohtori

J. Pressure Vessel Technol. April 2019, 141(2): 021801.

Paper No: PVT-18-1085

DOI: https://doi.org/10.1115/1.4042220

Published Online: February 21, 2019

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Topics: Cantilevers, Earthquakes, Evaluation methods, Fatigue damage, Pipes, Vibration, Pipelines, Waves, Stress

Proceedings Papers

Investigation of Fluid Diffusion Properties From Various Flaw Geometries of Piping

Shun Watanabe, Ryo Morita, Yuta Uchiyama

Proc. ASME. PVP2018, Volume 4: Fluid-Structure Interaction, V004T04A021, July 15–20, 2018

Paper No: PVP2018-84212

DOI: https://doi.org/10.1115/PVP2018-84212

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Topics: Diffusion (Physics), Fluids, Pipes, Flow (Dynamics), Leakage, Maintenance, Regulations, Safety, Failure, Fracture (Materials)

Proceedings Papers

Evaluation of Jet Impact Region and Fluid Force Generated From Ruptured Pipes: Part 4 — Numerical Evaluation of Affected Region by Flashing Jet Flow

Ryo Morita, Shun Watanabe, Shiro Takahashi, Noriyuki Takamura

Proc. ASME. ICONE26, Volume 6B: Thermal-Hydraulics and Safety Analyses, V06BT08A027, July 22–26, 2018

Paper No: ICONE26-82063

DOI: https://doi.org/10.1115/ICONE26-82063

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Topics: Flashing, Fluids, Jets, Pipes, Computational fluid dynamics, Safety, Steam, Damage, Design, Evaluation methods

Proceedings Papers

Considerations in Steam Piping Design for Prevention of an Acoustic Resonance at a Closed Side Branch

Ryo Morita, Yuta Uchiyama, Fumio Inada, Shiro Takahashi

Proc. ASME. PVP2017, Volume 4: Fluid-Structure Interaction, V004T04A031, July 16–20, 2017

Paper No: PVP2017-65244

DOI: https://doi.org/10.1115/PVP2017-65244

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Topics: Acoustics, Piping design, Resonance, Steam, Flow (Dynamics), Boiling water reactors, Pipes, Drops, Liquid films, Computational fluid dynamics

Proceedings Papers

Expansion of Multi-Purpose Steam Facility and Application to Acoustic Resonance in a Closed Side Branch Investigating Effects of Static Pressure Under Wet Steam Flow

Yuta Uchiyama, Ryo Morita

Proc. ASME. PVP2017, Volume 4: Fluid-Structure Interaction, V004T04A028, July 16–20, 2017

Paper No: PVP2017-65189

DOI: https://doi.org/10.1115/PVP2017-65189

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Topics: Acoustics, Flow (Dynamics), Pressure, Resonance, Steam, Pipes, Test facilities, Damping, Power stations, Engineering systems and industry applications

Proceedings Papers

Buckling Strength Evaluation of Locally Wall Thinning Elbow

Michiya Sakai, Shinichi Matsuura, Ryo Morita, Fumio Inada, Shigenobu Onishi

Proc. ASME. PVP2017, Volume 8: Seismic Engineering, V008T08A032, July 16–20, 2017

Paper No: PVP2017-66161

DOI: https://doi.org/10.1115/PVP2017-66161

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Topics: Buckling, Torsion, Deformation, Design, Drops, Earthquakes, Electricity (Physics), Erosion, Failure mechanisms, Finite element analysis

Proceedings Papers

Evaluation Method for Seismic Fatigue Damage of Plant Pipeline

Fumio Inada, Michiya Sakai, Ryo Morita, Ichiro Tamura, Shin-ichi Matsuura, Kiyoshi Saito, Yasuki Ohtori

Proc. ASME. PVP2017, Volume 8: Seismic Engineering, V008T08A030, July 16–20, 2017

Paper No: PVP2017-65596

DOI: https://doi.org/10.1115/PVP2017-65596

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Topics: Evaluation methods, Fatigue damage, Pipelines, Damage, Cantilevers, Cycles, Earthquakes, Flow (Dynamics), Nuclear power plant maintenance, Pipes

Journal Articles

Flow-Induced Acoustic Resonance in a Closed Side Branch Under a Low-Pressure Wet Steam Flow

Yuta Uchiyama, Ryo Morita

J. Pressure Vessel Technol. June 2017, 139(3): 031306.

Paper No: PVT-16-1132

DOI: https://doi.org/10.1115/1.4035271

Published Online: January 11, 2017

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Topics: Flow (Dynamics), Pressure, Resonance, Steam, Pipes

Proceedings Papers

Evaluation of Jet Impact Region and Fluid Force Generated From Ruptured Pipes: 1 — Numerical and Experimental Evaluation of Affected Region by Steam Jet

Ryo Morita, Yuta Uchiyama, Shun Watanabe, Shiro Takahashi, Qiang Xu, Noriyuki Takamura

Proc. ASME. ICONE24, Volume 3: Thermal-Hydraulics, V003T09A019, June 26–30, 2016

Paper No: ICONE24-60341

DOI: https://doi.org/10.1115/ICONE24-60341

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Topics: Fluids, Pipes, Steam, Computational fluid dynamics, Safety, Damage, Design, Evaluation methods, Nuclear power stations, Particulate matter

Proceedings Papers

Evaluation of Jet Impact Region and Fluid Force Generated From Ruptured Pipes: 2 — Evaluation of Fluid Force Using Computational Fluid Dynamics Analysis

Shiro Takahashi, Qiang Xu, Noriyuki Takamura, Ryo Morita, Yuta Uchiyama, Shun Watanabe

Proc. ASME. ICONE24, Volume 3: Thermal-Hydraulics, V003T09A015, June 26–30, 2016

Paper No: ICONE24-60316

DOI: https://doi.org/10.1115/ICONE24-60316

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Topics: Computational fluid dynamics, Fluids, Pipes, Steam, Jets, Damage, Design, Evaluation methods, Nozzles, Nuclear power stations

Proceedings Papers

Evaluation of Jet Impact Region and Fluid Force Generated From Ruptured Pipes: 3 — Evaluation of Established Standards

Qiang Xu, Shiro Takahashi, Noriyuki Takamura, Ryo Morita, Yuta Uchiyama, Shun Watanabe

Proc. ASME. ICONE24, Volume 3: Thermal-Hydraulics, V003T09A016, June 26–30, 2016

Paper No: ICONE24-60317

DOI: https://doi.org/10.1115/ICONE24-60317

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Topics: Fluids, Pipes, Computational fluid dynamics, Steam, Damage, Design, Engineering standards, Evaluation methods, Nuclear power stations, Particulate matter

Proceedings Papers

Experimental Investigation for Acoustic Resonance in Tandem Branches Under Each Dry and Wet Steam Flow

Yuta Uchiyama, Ryo Morita

Proc. ASME. PVP2015, Volume 4: Fluid-Structure Interaction, V004T04A035, July 19–23, 2015

Paper No: PVP2015-45456

DOI: https://doi.org/10.1115/PVP2015-45456

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Topics: Acoustics, Flow (Dynamics), Resonance, Steam, Power stations, Pipes, Piping systems, Air flow, Boiling water reactors, High cycle fatigue

Proceedings Papers

Seismic Evaluation Method for Piping Systems With Local Wall Thinning Caused by LDI

Michiya Sakai, Ryo Morita, Shinichi Matsuura, Fumio Inada, Shigenobu Onishi, Mitsuo Kugimoto

Proc. ASME. PVP2014, Volume 8: Seismic Engineering, V008T08A034, July 20–24, 2014

Paper No: PVP2014-28851

DOI: https://doi.org/10.1115/PVP2014-28851

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Topics: Evaluation methods, Piping systems, Earthquakes, Stress, Buckling, Damage, Design, Drops, Erosion, Fracture (Materials)

Proceedings Papers

Statistical Analysis of Seismic Effects of Low Seismic Class Equipment Based on Damage Data of Nuclear Power Plants

Ryo Morita, Fumio Inada, Yasuki Ohtori, Mitsuhide Nanpo, Koji Naradate, Syuhei Yamaguchi, Masataka Takeuchi, Tatsuya Yamaguchi, Takeshi Numata, Ichiro Tamura, Terushige Hosotani, Yusuke Kimura, Mitsuhiko Amemiya, Toyonobu Taguchi, Naomi Fukushi, Atsushi Yamaguchi, Nobuyuki Kojima

Proc. ASME. PVP2014, Volume 8: Seismic Engineering, V008T08A050, July 20–24, 2014

Paper No: PVP2014-28644

DOI: https://doi.org/10.1115/PVP2014-28644

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Topics: Damage, Nuclear power stations, Statistical analysis, Pipes, Databases, Earthquakes, Computer simulation, Design, Robustness, Safety

Journal citation

NARROW

Evaluation of Flashing Jet Impact on Surroundings Due to Leakage of High Pressure Pipes

Development of Predictive Evaluation Methods of Pipe Wall Thinning by Flow Accelerated Corrosion at Drift Region in Junction Piping

Simplified Elastic-Plastic Analysis Method for Piping Systems Based on Linear Time History Analysis

New Evaluation Method for Seismic Fatigue Damage of Plant Pipeline (Quantitative Performance and Consideration of Application)

Effect of Peak Excitation Frequency on Seismic Fatigue Damage of Plant Pipelines

Combined Effects of Steam Wetness and Pressure on Characteristics of Acoustic Resonance Amplitude in Closed Side Branch

Evaluation Method for Seismic Fatigue Damage of Plant Pipeline

Investigation of Fluid Diffusion Properties From Various Flaw Geometries of Piping

Evaluation of Jet Impact Region and Fluid Force Generated From Ruptured Pipes: Part 4 — Numerical Evaluation of Affected Region by Flashing Jet Flow

Considerations in Steam Piping Design for Prevention of an Acoustic Resonance at a Closed Side Branch

Expansion of Multi-Purpose Steam Facility and Application to Acoustic Resonance in a Closed Side Branch Investigating Effects of Static Pressure Under Wet Steam Flow

Buckling Strength Evaluation of Locally Wall Thinning Elbow

Evaluation Method for Seismic Fatigue Damage of Plant Pipeline

Flow-Induced Acoustic Resonance in a Closed Side Branch Under a Low-Pressure Wet Steam Flow

Evaluation of Jet Impact Region and Fluid Force Generated From Ruptured Pipes: 1 — Numerical and Experimental Evaluation of Affected Region by Steam Jet

Evaluation of Jet Impact Region and Fluid Force Generated From Ruptured Pipes: 2 — Evaluation of Fluid Force Using Computational Fluid Dynamics Analysis

Evaluation of Jet Impact Region and Fluid Force Generated From Ruptured Pipes: 3 — Evaluation of Established Standards

Experimental Investigation for Acoustic Resonance in Tandem Branches Under Each Dry and Wet Steam Flow

Seismic Evaluation Method for Piping Systems With Local Wall Thinning Caused by LDI

Statistical Analysis of Seismic Effects of Low Seismic Class Equipment Based on Damage Data of Nuclear Power Plants

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