Step-by-step challenge of debris characterization for the decommissioning of Fukushima-Daiichi Nuclear Power Station (FDNPS)

• Published in: Journal of nuclear science and technology Vol. 59; no. 7; pp. 807 - 834
• Main Authors: Kurata, Masaki, Okuzumi, Naoaki, Nakayoshi, Akira, Ikeuchi, Hirotomo, Koyama, Shinichi
• Format: Journal Article
• Language: English
• Published: Tokyo Taylor & Francis 03.07.2022; Taylor & Francis Ltd
• Subjects: Accident analysis; Accident conditions; Accident prediction; core status; corium; Corrosion mechanisms; Damage accumulation; Debris; Decommissioning; FDNPS samples; Forensic engineering; fuel debris; Fukushima Daiichi Nuclear Power Station; Literature reviews; Nuclear accidents; Nuclear accidents & safety; Nuclear power plants; Nuclear reactors; Nuclear safety; PCV inside investigation; Pile tests; Seawater; severe accident; Japan

The present article reviewed the step-by-step attempts on debris characterization after the severe accident of Fukushima-Daiichi Nuclear Power Station (FDNPS). It was rather difficult to investigate the reactor inside in the first few years. Distribution of degraded core materials, i.e. fuel debris,...