A radiation gauge shows a reading of 6.40 microSieverts per hour during a temporary return visit by evacuees to Okuma town, inside of the 20km (12 miles) radius around the tsunami-crippled Fukushima Daiichi nuclear power plant, on February 12, 2012 Submitted by RIJS on Mon, 12/07/2020 - 15:22 Read more about A radiation gauge shows a reading of 6.40 microSieverts per hour during a temporary return visit by evacuees to Okuma town, inside of the 20km (12 miles) radius around the tsunami-crippled Fukushima Daiichi nuclear power plant, on February 12, 2012