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Title: Results of detailed analyses performed on boring cores extracted from the concrete floors of the Fukushima Daiichi nuclear power plant reactor buildings

Abstract

Due to the massive earthquake and tsunami on March 11, 2011, and the following severe accident at the Fukushima Daiichi Nuclear Power Plant, concrete surfaces within the reactor buildings were exposed to radioactive liquid and vapor phase contaminants. In order to clarify the situation of this contamination in the reactor buildings of Units 1, 2 and 3, selected samples were transported to the Fuels Monitoring Facility in the Oarai Engineering Center of JAEA where they were subjected to analyses to determine the surface radionuclide concentrations and to characterize the radionuclide distributions in the samples. In particular, penetration of radiocesium in the surface coatings layer and sub-surface concrete was evaluated. The analysis results indicate that the situation of contamination in the building of Unit 2 was different from others, and the protective surface coatings on the concrete floors provided significant protection against radionuclide penetration. The localized penetration of contamination in the concrete floors was found to be confined within a millimeter of the surface of the coating layer of some millimeters. (authors)

Authors:
; ; ; ; ; ;  [1]; ;  [2]; ;  [3]
  1. Japan Atomic Energy Agency, 4002 Narita, Oarai, Ibaraki 311-1393 (Japan)
  2. Toshiba Corporation, 8, Shinsugita, Isogo-ku, Yokohama 235-8523 (Japan)
  3. Tokyo Electric Power Company, 1-1-3 Uchisaiwai, Chiyoda-ku, Tokyo, 100-8560 (Japan)
Publication Date:
Research Org.:
American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
OSTI Identifier:
22257864
Resource Type:
Conference
Resource Relation:
Conference: GLOBAL 2013: International Nuclear Fuel Cycle Conference - Nuclear Energy at a Crossroads, Salt Lake City, UT (United States), 29 Sep - 3 Oct 2013; Other Information: Country of input: France; 5 refs.; Related Information: In: Proceedings of GLOBAL 2013: International Nuclear Fuel Cycle Conference - Nuclear Energy at a Crossroads| 1633 p.
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 54 ENVIRONMENTAL SCIENCES; CONCRETES; CONTAMINATION; EARTHQUAKES; FLOORS; FUKUSHIMA DAIICHI NUCLEAR POWER STATION; JAEA; NUCLEAR FACILITIES; RADIONUCLIDE KINETICS; SURFACES; TSUNAMIS; VAPORS

Citation Formats

Maeda, Koji, Sasaki, S., Kumai, M., Sato, Isamu, Osaka, Masahiko, Fukushima, Mineo, Kawatsuma, Shinji, Goto, Tetsuo, Sakai, Hitoshi, Chigira, Takayuki, and Murata, Hirotoshi. Results of detailed analyses performed on boring cores extracted from the concrete floors of the Fukushima Daiichi nuclear power plant reactor buildings. United States: N. p., 2013. Web.
Maeda, Koji, Sasaki, S., Kumai, M., Sato, Isamu, Osaka, Masahiko, Fukushima, Mineo, Kawatsuma, Shinji, Goto, Tetsuo, Sakai, Hitoshi, Chigira, Takayuki, & Murata, Hirotoshi. Results of detailed analyses performed on boring cores extracted from the concrete floors of the Fukushima Daiichi nuclear power plant reactor buildings. United States.
Maeda, Koji, Sasaki, S., Kumai, M., Sato, Isamu, Osaka, Masahiko, Fukushima, Mineo, Kawatsuma, Shinji, Goto, Tetsuo, Sakai, Hitoshi, Chigira, Takayuki, and Murata, Hirotoshi. 2013. "Results of detailed analyses performed on boring cores extracted from the concrete floors of the Fukushima Daiichi nuclear power plant reactor buildings". United States.
@article{osti_22257864,
title = {Results of detailed analyses performed on boring cores extracted from the concrete floors of the Fukushima Daiichi nuclear power plant reactor buildings},
author = {Maeda, Koji and Sasaki, S. and Kumai, M. and Sato, Isamu and Osaka, Masahiko and Fukushima, Mineo and Kawatsuma, Shinji and Goto, Tetsuo and Sakai, Hitoshi and Chigira, Takayuki and Murata, Hirotoshi},
abstractNote = {Due to the massive earthquake and tsunami on March 11, 2011, and the following severe accident at the Fukushima Daiichi Nuclear Power Plant, concrete surfaces within the reactor buildings were exposed to radioactive liquid and vapor phase contaminants. In order to clarify the situation of this contamination in the reactor buildings of Units 1, 2 and 3, selected samples were transported to the Fuels Monitoring Facility in the Oarai Engineering Center of JAEA where they were subjected to analyses to determine the surface radionuclide concentrations and to characterize the radionuclide distributions in the samples. In particular, penetration of radiocesium in the surface coatings layer and sub-surface concrete was evaluated. The analysis results indicate that the situation of contamination in the building of Unit 2 was different from others, and the protective surface coatings on the concrete floors provided significant protection against radionuclide penetration. The localized penetration of contamination in the concrete floors was found to be confined within a millimeter of the surface of the coating layer of some millimeters. (authors)},
doi = {},
url = {https://www.osti.gov/biblio/22257864}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jul 01 00:00:00 EDT 2013},
month = {Mon Jul 01 00:00:00 EDT 2013}
}

Conference:
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