[1I01-04] Reactor Pressure Vessel Steel 1 | 2026 Annual Meeting

Session Details

Oral presentationV. Nuclear Fuel Cycle and Nuclear Materials : 502-1 Nuclear Materials, Degradation, Radiation Effects, and Related Technology

[1I01-04]Reactor Pressure Vessel Steel 1

Wed. Mar 11, 2026 9:30 AM - 10:40 AM JST
Wed. Mar 11, 2026 12:30 AM - 1:40 AM UTC

Room I(Kumamoto-jo Hall 4F Conference RoomE)

Chair:Yasuyoshi Nagai(CRIEPI)

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[1I01]Ni-Si-Mn precipitates in reactor pressure vessel steelsmelting point of ternary compounds

*Yoshitaka Matsukawa¹, Shimon Odawara¹, Hideki Yuya², Minako Yoshikawa², Hiroaki Muta³, Ryuta Kasada⁴, Kenta Yoshida⁴, Kazunori Morishita⁵, Masatake Yamaguchi⁶ (1. Kumamoto University, 2. Chubu Electric Power Inc., 3. Osaka University, 4. Tohoku University, 5. Kyoto University, 6. JAEA)

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[1I02]Development of a Potential Function for Fe-Mn-Ni-Si Alloys Used in Light-Water Reactor Pressure Vessel Steels Based on First-Principles Calculations and Machine Learning

*Baopu WANG¹, Kota SUEYOSHI¹, Liangfan ZHU¹, Yuting CHEN¹, Haruki KUMAGAI¹, Kazunori MORISHITA¹, Kenichi FUKUMOTO², Hirotomo IWAKIRI³ (1. Kyoto Univ., 2. Univ. of Fukui, 3. Univ. of Ryukyus)

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[1I03]Evaluation of Irradiation Embrittlement of a Harvested Reactor Pressure Vessel Materialfrom a Domestic PWR Plant(5) Correlation between Solute Atom Cluster and Dislocation Loop

*Yuuki Maeda¹, Katsuhiko Fujii¹, Hitoshi Seto², Koji Fukuya¹ (1. INSS, 2. NFD)

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[1I04]Evaluation of Irradiation Embrittlement of a Harvested Reactor Pressure Vessel Materialfrom a Domestic PWR Plant(6) Investigation of Low-dose Neutron Irradiation Effects

*Katsuhiko Fujii¹, Yuuki Maeda¹, Toru Oumaya¹, Koji Fukuya¹ (1. INSS)

10:30 AM - 10:40 AM JST(1:30 AM - 1:40 AM UTC)

Time reserved for Chair

Back to Category List