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Kunihiro Hasegawa
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Proceedings Papers

The Demonstrated Function of PLR Pump Mechanical Seal Under SBO Conditions

Toshiyuki Yoshioka, Takashi Motani, Atsushi Fujimaru, Koji Yamada, Kunihiro Hasegawa, Takeshi Shimizu, Hiroyuki Torigoe
Proc. ASME. ICONE25, Volume 2: Plant Systems, Structures, Components and Materials, V002T03A072, July 2–6, 2017
Paper No: ICONE25-66919
DOI: https://doi.org/10.1115/ICONE25-66919
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Topics: Pumps, Leakage, Boiling water reactors, Nuclear reactor coolants, Safety, Failure, Pressurized water reactors, Accidents, Fukushima nuclear disaster, Japan, 2011, Licensing
Proceedings Papers

Crack Growth Behavior and Preventive Maintenance for Reactor Internals With Cracks in Tokai-2 Nuclear Power Plant

Takushi Fujino, Takeshi Terakado, Koji Dozaki, Nobuo Ito, Kunihiro Hasegawa
Proc. ASME. PVP2013, Volume 1B: Codes and Standards, V01BT01A050, July 14–18, 2013
Paper No: PVP2013-97257
DOI: https://doi.org/10.1115/PVP2013-97257
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Topics: Fracture (Materials), Maintenance, Nuclear power stations, Inspection, Japan Society of Mechanical Engineers, Shapes, Crack propagation, Cycles, Metals, Shot peening
Proceedings Papers

Field Experience of Water Jet Peening Application on BWR Reactor Internals With Cracked Surfaces

Ren Morinaka, Kunihiro Hasegawa, Masashi Fukaya, Yuji Matsui, Hisamitsu Hatoh, Noboru Saito, Fujio Yoshikubo, Akihiro Kanno
Proc. ASME. ICONE20-POWER2012, Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle, and Balance of Plant; Component Reliability and Materials Issues; Steam Generator Technology Applications and Innovations; Advanced Reactors and Near-Term Deployment; Reactor Physics, Neutronics, and Transport Theory; Nuclear Education, Human Resources, and Public Acceptance, 241-250, July 30–August 3, 2012
Paper No: ICONE20-POWER2012-55070
DOI: https://doi.org/10.1115/ICONE20-POWER2012-55070
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Topics: Boiling water reactors, Shot peening, Water, Fracture (Materials), Nuclear power, Crack propagation, JSME Standards, Nuclear power stations, Nuclear reactors, Stress corrosion cracking
Proceedings Papers

Application of Water Jet Peening on Pre-Cracked Nickel Based Alloy and Stainless Steel

Ren Morinaka, Kunihiro Hasegawa, Noboru Saito, Fujio Yoshikubo, Akihiro Kanno
Proc. ASME. PVP2012, Volume 1: Codes and Standards, 719-726, July 15–19, 2012
Paper No: PVP2012-78824
DOI: https://doi.org/10.1115/PVP2012-78824
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Topics: Alloys, Nickel, Shot peening, Stainless steel, Water, Fracture (Materials), Crack propagation, Nuclear power, Compression, Nuclear power stations