DSpace Fukushima Medical University

福島県立医科大学学術成果リポジトリ = Fukushima Medical University Repository >
福島医学会 = The Fukushima Society of Medical Science >
Fukushima Journal of Medical Science >
Vol.60 (2014) >

Please use this identifier to cite or link to this item: http://ir.fmu.ac.jp/dspace/handle/123456789/411

Files in This Item:

File Description SizeFormat
FksmJMedSci_60_p101.pdf1.05 MBAdobe PDFDownload
Title: Radioactive substances in tap water
Authors: Atsuumi, Ryo
Endo, Yoshihiko
Suzuki, Akihiko
Kannotou, Yasumitu
Nakada, Masahiro
Yabuuchi, Reiko
Source title: Fukushima Journal of Medical Science
Volume: 60
Issue: 1
Start page: 101
End page: 105
Issue Date: 8-Aug-2014
Abstract: A 9.0 magnitude (M) earthquake with an epicenter off the Sanriku coast occurred at 14: 46 on March 11, 2011. TEPCO Fukushima Daiichi Nuclear Power Plant (F-1 NPP) was struck by the earthquake and its resulting tsunami. Consequently a critical nuclear disaster developed, as a large quantity of radioactive materials was released due to a hydrogen blast. On March 16th, 2011, radioiodine and radioactive cesium were detected at levels of 177 Bq/kg and 58 Bq/kg, respectively, in tap water in Fukushima city (about 62km northwest of TEPCO F-1 NPP). On March 20th, radioiodine was detected in tap water at a level of 965 Bq/kg, which is over the value-index of restrictions on food and drink intake (radioiodine 300 Bq/kg (infant intake 100 Bq/kg)) designated by the Nuclear Safety Commission. Therefore, intake restriction measures were taken regarding drinking water. After that, although the all intake restrictions were lifted, in order to confirm the safety of tap water, an inspection system was established to monitor all tap water in the prefecture. This system has confirmed that there has been no detection of radioiodine or radioactive cesium in tap water in the prefecture since May 5th, 2011. Furthermore, radioactive strontium (^{89} Sr, ^{90}Sr) and plutonium (^{238}Pu, ^{239}Pu+^{240}Pu) in tap water and the raw water supply were measured. As a result, ^{89}Sr, ^{238}Pu, ^{239}Pu+^{240}Pu were undetectable and although ^{90}Sr was detected, its committed effective dose of 0.00017 mSv was much lower than the yearly 0.1 mSv of the World Health Organization guidelines for drinking water quality. In addition, the results did not show any deviations from past inspection results.
Description: Fukushima Radiation Symposium 2013
Publisher: The Fukushima Society of Medical Science
Publisher (Alternative foam): 福島医学会
language: eng
URI: http://ir.fmu.ac.jp/dspace/handle/123456789/411
Full text URL: http://ir.fmu.ac.jp/dspace/bitstream/123456789/411/1/FksmJMedSci_60_p101.pdf
ISSN: 0016-2590
2185-4610
DOI: 10.5387/fms.2014-11
PubMed ID: 25030724
Related Page: http://dx.doi.org/10.5387/fms.2014-11
Rights: © 2014 The Fukushima Society of Medical Science
Appears in Collections:Vol.60 (2014)

Files in This Item:

File Description SizeFormat
FksmJMedSci_60_p101.pdf1.05 MBAdobe PDFDownload

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

DSpace Software Copyright © 2002-2007 MIT and Hewlett-Packard