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Takayuki Miyagawa
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Proceedings Papers

Development of Leak Before Break Assessment Guidelines for Sodium Cooled Fast Reactors in Japan

Hiroki Yada, Takashi Wakai, Takayuki Miyagawa, Hideo Machida
Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A060, July 13–15, 2021
Paper No: PVP2021-61942
DOI: https://doi.org/10.1115/PVP2021-61942
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Topics: Fast neutron reactors, Fracture (Materials), In-service inspection, Leakage, Leak-before-break, Sodium, Sodium fast reactors
Proceedings Papers

Research and Development of Three-Dimensional Isolation System for Sodium-Cooled Fast Reactor: Part 5 — Isolation Performance Applied to Reactor Building

Takahiro Somaki, Tsuyoshi Fukasawa, Shigeki Okamura, Takayuki Miyagawa, Masato Uchita, Tomohiko Yamamoto, Masashi Miyazaki, Satoshi Fujita
Proc. ASME. PVP2020, Volume 9: Seismic Engineering, V009T09A019, August 3, 2020
Paper No: PVP2020-21709
DOI: https://doi.org/10.1115/PVP2020-21709
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Topics: Industrial research, Sodium fast reactors
Proceedings Papers

Research and Development of Three-Dimensional Isolation System for Sodium-Cooled Fast Reactor: Part 6 — Development of High Speed Oil Damper for Isolated Building

Tsuyoshi Fukasawa, Takahiro Somaki, Takayuki Miyagawa, Masato Uchita, Tomohiko Yamamoto, Masashi Miyazaki, Shigeki Okamura, Satoshi Fujita
Proc. ASME. PVP2020, Volume 9: Seismic Engineering, V009T09A018, August 3, 2020
Paper No: PVP2020-21320
DOI: https://doi.org/10.1115/PVP2020-21320
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Topics: Dampers, Industrial research, Sodium fast reactors
Proceedings Papers

Research and Development of Three-Dimensional Isolation System for Sodium-Cooled Fast Reactor: Part 3 — Characteristics for Elements on Basis of Half-Scale Loading Tests

Takahiro Somaki, Tsuyoshi Fukasawa, Shigeki Okamura, Takayuki Miyagawa, Masato Uchita, Tomohiko Yamamoto, Tomoyoshi Watakabe, Satoshi Fujita
Proc. ASME. PVP2019, Volume 8: Seismic Engineering, V008T08A037, July 14–19, 2019
Paper No: PVP2019-93475
DOI: https://doi.org/10.1115/PVP2019-93475
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Topics: Bearings, Disks, Industrial research, Rubber, Sodium fast reactors, Springs, Dampers, Design methodology, Displacement, Dynamic testing (Materials)
Proceedings Papers

Research and Development of Three-Dimensional Isolation System for Sodium-Cooled Fast Reactor: Part 4 — Proposal of Optimal Combination Method for Disc Spring Units and Newly Friction Model for Sliding Elements

Tsuyoshi Fukasawa, Shigeki Okamura, Takahiro Somaki, Takayuki Miyagawa, Masato Uchita, Tomohiko Yamamoto, Tomoyoshi Watakabe, Satoshi Fujita
Proc. ASME. PVP2019, Volume 8: Seismic Engineering, V008T08A038, July 14–19, 2019
Paper No: PVP2019-93480
DOI: https://doi.org/10.1115/PVP2019-93480
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Topics: Disks, Friction, Industrial research, Sodium fast reactors, Springs, Algorithms, Bearings, Dampers, Dimensions, Quality control
Proceedings Papers

Research and Development of Three-Dimensional Isolation System for Sodium-Cooled Fast Reactor: Part 2 — Details of Characteristics for Disc Springs and Oil Dampers on Basis of Full-Scale Loading Tests

Takahiro Somaki, Tsuyoshi Fukasawa, Takayuki Miyagawa, Tomohiko Yamamoto, Yoshifumi Hibako, Masanari Okamoto, Osamu Noda, Futoshi Ishizuka
Proc. ASME. PVP2018, Volume 8: Seismic Engineering, V008T08A035, July 15–20, 2018
Paper No: PVP2018-84491
DOI: https://doi.org/10.1115/PVP2018-84491
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Topics: Dampers, Disks, Industrial research, Sodium fast reactors, Springs, Damping, Bearings, Rubber, Stress, Waves
Proceedings Papers

Research and Development of Three-Dimensional Isolation System for Sodium-Cooled Fast Reactor: Part 1 — Proposal of Analytical Models Based on Loading Tests

Tsuyoshi Fukasawa, Shigeki Okamura, Takahiro Somaki, Takayuki Miyagawa, Masato Uchita, Tomohiko Yamamoto, Tomoyoshi Watakabe, Satoshi Fujita
Proc. ASME. PVP2018, Volume 8: Seismic Engineering, V008T08A038, July 15–20, 2018
Paper No: PVP2018-84532
DOI: https://doi.org/10.1115/PVP2018-84532
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Topics: Bearings, Dampers, Damping, Design, Differential equations, Disks, Industrial research, Reactor vessels, Rubber, Sodium fast reactors
Proceedings Papers

Research and Development of Three Dimensional Seismic Isolation System Utilized Coned-Disc-Springs With Rubber Bearings

Takayuki Miyagawa, Tomoyoshi Watakabe, Tomohiko Yamamoto, Tsuyoshi Fukasawa, Shigeki Okamura
Proc. ASME. PVP2017, Volume 8: Seismic Engineering, V008T08A043, July 16–20, 2017
Paper No: PVP2017-65549
DOI: https://doi.org/10.1115/PVP2017-65549
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Topics: Bearings, Disks, Industrial research, Rubber, Springs, Sodium fast reactors, Stress, Buckling, Design, Reactor vessels
Proceedings Papers

Elaboration of the System Based Code Concept — Activities in JSME and ASME: (1) Overview

Tai Asayama, Takayuki Miyagawa, Koji Dozaki, Yoshio Kamishima, Masaaki Hayashi, Hideo Machida
Proc. ASME. ICONE22, Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Plant Systems, Structures and Components; Codes, Standards, Licensing and Regulatory Issues, V001T07A004, July 7–11, 2014
Paper No: ICONE22-30567
DOI: https://doi.org/10.1115/ICONE22-30567
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Topics: Japan Society of Mechanical Engineers, Reliability, ASME Boiler and Pressure Vessel Code, Collaboration, Design, Engineering standards, In-service inspection, Liquid metals, Mechanical engineers, Sodium fast reactors