2012年6月1日
平面除染による空間放射線量率の評価 : 公園における除染試験結果
日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan
- 巻
- 11
- 号
- 2
- 開始ページ
- 111
- 終了ページ
- 117
- 記述言語
- 日本語
- 掲載種別
- DOI
- 10.3327/taesj.J11.041
- 出版者・発行元
- 一般社団法人 日本原子力学会
The Japan Atomic Energy Agency decontaminated schools, playgrounds, swimming pools, and houses in nonevacuated, less-contaminated areas in Fukushima for environmental restoration. A small, 150 m2 playground lot in the residential area was chosen for decontamination demonstration, which used routinely available tools and commodities to carry out the work. The surfaces of playground lot equipment, such as swings, slides, and horizontal iron bars, were completely decontaminated by brushing with water and/or detergent. Side gutters around the playground lot were cleaned by removing the mud and then brushed and washed with a high-pressure water jet (7 MPa). The air dose rate at the playground lot was dominated by radiation from the ground surface and adjacent surroundings, such as apartments and rice fields. Two or three centimeters of the surface soil contaminated with cesium was removed manually with shovels, hoes, and other gardening tools. This significantly reduced the average air dose rate of the entire playground lot from 1.5 μSv/h before decontamination to 0.6 μSv/h. These results showed that ground surface decontamination can contribute measurably to the reduction in air dose rate in relatively small areas in residential areas.<br>
- リンク情報
- ID情報
-
- DOI : 10.3327/taesj.J11.041
- ISSN : 1347-2879
- CiNii Articles ID : 10030318869
- CiNii Books ID : AA11643165
- identifiers.cinii_nr_id : 9000001715613
- SCOPUS ID : 84864267907