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Proceedings Papers

State of the Art Study for the Basis of Pipe Wall Thinning Management in Japan

Fumio Inada, Yutaka Watanabe, Taku Ohira, Akira Nakamura
Proc. ASME. ICONE21, Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications, V001T01A012, July 29–August 2, 2013
Paper No: ICONE21-15184
DOI: https://doi.org/10.1115/ICONE21-15184
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Topics: Pipes, Japan Society of Mechanical Engineers, Corrosion, Drops, Energy generation, Erosion, Flow (Dynamics), Inspection, Roads
Proceedings Papers

The Proposal of Wall Thickness Management Criteria of T-Pipes

Kiyoharu Tsunokawa, Taku Ohira, Naoki Miura, Yasumi Kitajima, Daisuke Yoshimura
Proc. ASME. PVP2012, Volume 3: Design and Analysis, 149-156, July 15–19, 2012
Paper No: PVP2012-78717
DOI: https://doi.org/10.1115/PVP2012-78717
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Topics: Pipes, Wall thickness, Computer simulation, Construction, Design
Proceedings Papers

Evaluation of Wall Thinning of PWR Feed Water Piping With the Coupled Model of Static Electrochemical Analysis and Dynamic Double Oxide Layer Analysis

Masanori Naitoh, Shunsuke Uchida, Hidetoshi Okada, Taku Ohira, Seiichi Koshizuka
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B, 1243-1252, July 18–22, 2010
Paper No: PVP2010-25517
DOI: https://doi.org/10.1115/PVP2010-25517
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Topics: Electrochemical analysis, Feedwater, Pipes, Pressurized water reactors, Mass transfer, Computational fluid dynamics, Flow (Dynamics), Turbulence, Boilers, Boundary layers
Proceedings Papers

Prediction of Liquid Droplet Impingment Erosion (LDI) Trend in Actual NPP

Taku Ohira, Ryo Morita, Kazuhiro Tanji, Shinji Akiba, Koichi Niiyama, Fumio Inada, Kimitoshi Yoneda
Proc. ASME. PVP2009, Volume 6: Materials and Fabrication, Parts A and B, 865-871, July 26–30, 2009
Paper No: PVP2009-77375
DOI: https://doi.org/10.1115/PVP2009-77375
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Topics: Drops, Erosion, Nuclear power stations, Pipes, Flow (Dynamics), Diluents, Remaining life assessment, Steam, Wall thickness
Proceedings Papers

Evaluation of Hydraulic Factors Affecting Flow Accelerated Corrosion and Its Verification With Power Plant Data

Kimitoshi Yoneda, Taku Ohira, Kazuhiro Tanji, Shinji Akiba, Koichi Niiyama, Ryo Morita, Fumio Inada
Proc. ASME. PVP2009, Volume 6: Materials and Fabrication, Parts A and B, 873-879, July 26–30, 2009
Paper No: PVP2009-77486
DOI: https://doi.org/10.1115/PVP2009-77486
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Topics: Corrosion, Flow (Dynamics), Power stations, Condensed matter, Boiling water reactors, Pressurized water reactors, Mass transfer, Turbulence, Computer simulation, Ducts
Proceedings Papers

Development of Alternative Reductant Application in PWR Primary Systems

Masafumi Domae, Hirotaka Kawamura, Taku Ohira
Proc. ASME. ICONE17, Volume 1: Plant Operations, Maintenance, Engineering, Modifications and Life Cycle; Component Reliability and Materials Issues; Next Generation Systems, 575-582, July 12–16, 2009
Paper No: ICONE17-75551
DOI: https://doi.org/10.1115/ICONE17-75551
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Topics: Pressurized water reactors, Hydrogen, Methanol, Coolants, Stainless steel, Water, Corrosion, Crack propagation, Electrolytic corrosion, Public utilities
Proceedings Papers

The Comprehensive Discussion of the Pipe Wall Thinning of Secondary System in BWR and PWR Nuclear Power Plants

Taku Ohira, Tomohiko Hoshino
Proc. ASME. PVP2006-ICPVT-11, Volume 6: Materials and Fabrication, 787-792, July 23–27, 2006
Paper No: PVP2006-ICPVT-11-93549
DOI: https://doi.org/10.1115/PVP2006-ICPVT-11-93549
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Topics: Boiling water reactors, Nuclear power stations, Pipes, Pressurized water reactors, Temperature, Corrosion protection, Flow (Dynamics), Nozzles, Nuclear power, Orifices