2025 Fall Meeting
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Oral presentationIII. Fission Energy Engineering : 301-1 Reactor Physics, Utilization of Nuclear Data, Criticality Safety

[1N15-19]Fuel Debris

Wed. Sep 10, 2025 4:30 PM - 6:00 PM JST
Wed. Sep 10, 2025 7:30 AM - 9:00 AM UTC
Room N(AIM3F Meeting Room 313)
Chair:Shoichiro Okita(JAEA)
4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)

[1N15]Feasibility study on early detection of the multiplication factor changes using radiation of noble gas released from fuel debris in the Fukushima Daiichi Nuclear Power Station

*Yoko Yoshimura1, Haruka Kikuchi1, Yasunori Yamanaka1, Takatoshi Hattori1, Daisuke Yamauchi1, Yamato Hayashi2 (1. NDF, 2. TOSHIBA ESS)
Comment()
4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[1N16]Examining the Impact of Falling Heavy Objects during Decommissioning of the Fukushima Daiichi Nuclear Power Station(1) Purpose and results of the heavy object drop tests

*Haruka Kikuchi1, Yoko Yoshimura1, Daisuke Yamauchi1, Yasunori Yamanaka1, Takatoshi Hattori1, Yasuhiro Harada2, Mizuki Yamada2, Makoto Nakano3 (1. NDF, 2. MHI, 3. MHI NSE)
Comment()
5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)

[1N17]Examining the Impact of Falling Heavy Objects during Decommissioning of the Fukushima Daiichi Nuclear Power Station(2) criticality analysis based on the heavy object drop test

HARUKA KIKUCHI1, YOKO YOSHIMURA1, DAISUKE YAMAUCHI1, YASUNORI YAMANAKA1, TAKATOSHI HATTORI1, YASUHIRO HARADA2, *MIZUKI YAMADA2, MAKOTO NAKANO3 (1. Nuclear Damage Compensation and Decommissioning Facilitation Corporation, 2. Mitsubishi Heavy Industries, Ltd., 3. MHI NS Engineering Co., Ltd.)
Comment()
5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)

[1N18]Dose Evaluation of Hypothetical Criticality by Fuel Debris at Fukushima Daiichi Nuclear Power Plant

*Kodai Fukuda1, Satoshi Gunji1, Shigeki Shiba2, Daiki Iwahashi2 (1. JAEA, 2. NRA)
Comment()
5:30 PM - 5:45 PM JST(8:30 AM - 8:45 AM UTC)

[1N19]Investigation of neutronic characteristics of a partially damaged reactor model

*Hoang Hai Nguyen1 (1. JAEA)
Comment()
5:45 PM - 6:00 PM JST(8:45 AM - 9:00 AM UTC)

Time reserved for Chair

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