Radiation monitoring activities by Japan Atomic Energy Agency in response to the Fukushima Daiichi Nuclear Power Plant accident

原子力機構が実施した福島第一原子力発電所事故対応放射線モニタリング

三枝 純

Saegusa, Jun

Immediately after the Fukushima Daiichi Nuclear Power Plant (NPP) accident, Japan Atomic Energy Agency (JAEA), as the Designated Public Institution for the implementation of emergency response measures against nuclear emergency situation, started an extensive range of radiation monitoring nationwide. The radiation monitoring includes air dose-rates measured with various types of instruments including aerial surveys, radioactivity concentrations of dust in air, soil, index-plants and so on. Acquired data are open to the public via the Internet website of the central government as well as in a public database developed by JAEA. The presentation outlines the framework of these activities and some of monitoring results obtained in the past five years.