Development and Adaptability of a Topsoil Removal Machine for Decontaminating Peripheral Areas of Agricultural Land

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X

Restoration and reconstruction are the largest and most pressing tasks following the nuclear accident at Fukushima. In this paper we address the task of reducing external exposure to radiation from radioactive material that has accumulated in agricultural land or its peripheral areas, and report on the features of a machine developed to decontaminate the peripheral areas of agricultural embankments and roads, as well as the on-site testing results. Based on the results of analyzing the vertical distribution of radioactive Cs concentration in the soil, we set the removal depth of the machine to 5 cm and proceeded with operation. In terms of usability and the decontamination effects provided by the embankment topsoil removal machine, we achieved a field capacity of 4.4 a/h and reduced the concentration of radioactive Cs and the air dose rate after treatment by about 80%. And based on the test results of the agricultural road surface stripping machine, a field capacity of approximately 0.83 a/h and an extremely high reduction rate of about 90% were achieved after stripping and removal treatment of the soil. Furthermore, the results of surveying the dust exposure status as an operating environment factor related to worker safety (as pertaining to developed machinery) suggested that the fully enclosed construction of the operating section of both machines apparently contributed to reducing the scattering of dirt, sand and dust that degrade the surrounding environment during decontamination operation.

作成者 HACHIYA Mitsuru MIYAMA Daisuke CHIBA Masamoto MIYAZAKI Masahiro ICHIKI Hideyuki OCHIAI Yoshiji TAKAHASHI Masamitsu HOSOKAWA Hisashi KOBAYASHI Kyo NAKAMURA Ryuzo HAYASHI Tetsuaki TODA Tsutomu KOTAKE Kazuo

radioactive material cesium

air dose rate

dust concentration

field test

公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 13
終了ページ 22
DOI 10.6090/jarq.50.13
権利 Japan International Research Center for Agricultural Sciences
言語 eng