Reflection on lessons learned on Fukushima environmental remediation from the standpoint of governmental bodies and local residents

The Accident of the Fukushima Dai-ichi Nuclear Power Plant posed a wide range of environmental contamination by mainly radioactive cesium-134, and -137. After 5 years passed, hundred thousands of residents are still evacuated, though the remediation activity has been progressing. Before the accident, Japan never expected such catastrophic disaster and never prepared for remediation and storage of a large volume of radioactive materials. Up to the present, effective lessons learned are summarized in the IAEA review mission reports, IEM-4 Conference report, and so on by studying the remediation activities in Fukushima. This paper describes supplemental points of lessons learned, which are drove from the activities in the academic society and in the role of advisor to local governments.