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Analysis of Accident Progression of Fukushima Daiichi NPP by the SAMPSON Code

Volume 6: Nuclear Education, Public Acceptance and Related Issues; Instrumentation and Controls (I&C); Fusion Engineering; Beyond Design Basis Events, 2014
This paper describes analysis results of the early phase accident progression of the Fukushima Daiichi Nuclear Power Plant (NPP) Unit 1 by the severe accident analysis code SAMPSON. The isolation condensers were the only devices for decay heat removal at Unit 1, but they stopped after the loss of AC and DC powers.
Masanori Naitoh, Marco Pellegrini, Hiroaki Suzuki, Hideo Mizouchi, Hidetoshi Okada   +4 more
openaire   +2 more sources

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Radioxenon monitoring in Beijing following the Fukushima Daiichi NPP accident

Applied Radiation and Isotopes, 2013
This paper reports the brief process and results of radioxenon monitoring and analysis in Beijing following the Fukushima Daiichi nuclear power plant accident. The accident and release of volatile radionuclides were caused by 9.0 magnitude earthquake and tsunami on March 11, 2011.
Wang, Shilian, Li, Qi, Meng, Qinghua, Chen, Zhanying, Zhao, Yungang, Li, Huijuan, Jia, Huaimao, Chang, Yinzhong, Liu, Shujiang, Zhang, Xinjun, Fan, Yuanqing, Wan, Ling, Lou, Yun   +12 more
exaly   +3 more sources

Tertiary evaluation of the committed effective dose of emergency workers that responded to the Fukushima Daiichi NPP accident

Journal of Occupational and Environmental Hygiene, 2017
In January 2014, Tokyo Electric Power Company (TEPCO) learned that the committed effective dose (CED) for nine emergency workers at the Fukushima Daiichi Nuclear Power Plant accident had been assessed by a method other than the standard assessment methods, established by the Ministry of Health, Labour and Welfare (MHLW) in a secondary evaluation ...
Shojiro Yasui
exaly   +3 more sources

Confirmation of severe accident code modeling in light of the findings at Fukushima Daiichi NPPs

Nuclear Engineering and Design, 2019
Abstract On March 11th 2011 the Great East Japan Earthquake and Tsunami hit the Fukushima Daiichi Nuclear Power Station. The Fukushima Daiichi Units 1 to 3 lost all DC and AC power supplies, which set in motion a chain of events that led to releases of radioactivity to the environment.
M. Pellegrini, M. Naitoh, Y. Kudo, S. Mizokami   +3 more
openaire   +2 more sources

ACCIDENT LESSONS AT THE FUKUSHIMA-DAIICHI NPP FOR THE SAFETY OF THE NUCLEAR POWER INDUSTRY IN UKRAINE

POWER ENGINEERING: economics, technique, ecology, 2023
The main causes of destructive steam and gas explosions with catastrophic environmental consequences during the accidents at Fukushima-Daiichi NPP were the loss of tightness of the passive safety systems of the reactor residual fuel removal safety system and the critical residual heat removal function in the spent nuclear fuel holding tank .
V. Kondratyk, Y. Pysmennyy, І. Ostapenko, D. Fedorov   +3 more
openaire   +3 more sources

Radiation exposure to Marine biota around the Fukushima Daiichi NPP

Environmental Monitoring and Assessment, 2013
The dose rates for six marine organisms, pelagic fish, benthic fish, mollusks, crustaceans, macroalgae, and polychaete worms, representative in marine ecosystems, have been predicted by the equilibrium model with the measured seawater activity concentrations at three locations around the Fukushima Daiich nuclear power plant after the accident on March ...
Dong-Kwon, Keum, Byeong-Ho, Kim, Kwang-Muk, Lim, Yong-Ho, Choi   +3 more
openaire   +2 more sources

Analysis of Accident Progression of Fukushima Daiichi NPPs With SAMPSON Code

Volume 6: Beyond Design Basis Events; Student Paper Competition, 2013
The Fukushima Daiichi Nuclear Power Plant units 1, 2, and 3 had serious damages due to the huge earthquake and tsunami which occurred on March 11th 2011. Pressure transients in the reactor pressure vessels (RPVs) of the units 1, 2, and 3 were analyzed with the severe accident analysis code, SAMPSON for a few days from the scram until occurrence of ...
Masanori Naitoh, Marco Pellegrini, Hideo Mizouchi, Hiroaki Suzuki, Hidetoshi Okada   +4 more
openaire   +1 more source

Estimation of the Depressurization Process of Fukushima Daiichi NPP Unit 1 with SAMPSON

Nuclear Technology, 2014
As Units 1, 2, and 3 of the Fukushima Daiichi nuclear power plant (NPP) entered the phase of long-term station blackout following the huge tsunami, the decay heat could not be effectively removed f...
Maolong Liu, Yuki Ishiwatari, Koji Okamoto   +2 more
openaire   +1 more source

Development of the source term PIRT based on findings during Fukushima Daiichi NPPs accident

Nuclear Engineering and Design, 2015
Abstract Research Expert Committee on Evaluation of Severe Accident of AESJ (Atomic Energy Society of Japan) has developed thermal hydraulic PIRT (Phenomena Identification and Ranking Table) and source term (ST) PIRT based on findings during the Fukushima Daiichi NPPs accident.
Shoichi Suehiro, Jun Sugimoto, Akihide Hidaka, Hidetoshi Okada, Shinya Mizokami, Koji Okamoto   +5 more
openaire   +1 more source

A critical review and update of modelling of treated water discharging from Fukushima Daiichi NPP

Marine Pollution Bulletin
Since the accident at the Fukushima Daiichi nuclear power plant (FDNPP) in March 2011 seawater is still needed to cool the reactor cores. This water, contaminated with radionuclides, has been collected in tanks and treated on the site of the FDNPP.
V, Maderich, D, Tsumune, R, Bezhenar, G, de With   +3 more
openaire   +2 more sources