Japan’s nuclear regulator raps Fukushima operator over radiation readings

By Mari Saito TOKYO (Reuters) – Japan's nuclear regulator has criticized the operator of the stricken Fukushima plant for incorrectly measuring radiation levels in contaminated groundwater at the site. Almost three years since the reactor meltdowns at the Fukushima Daiichi station, Tokyo Electric Power Co (Tepco) still lacks basic understanding of measuring and handling radiation, Nuclear Regulation Authority (NRA) Chairman Shunichi Tanaka said on Wednesday. Tepco said last week that groundwater drawn from a monitoring well last July contained a record 5 million becquerels per liter of dangerous radioactive strontium-90 – more than five times the total beta radiation reading of 900,000 becquerels per liter recorded in the well, which is around 25 meters from the ocean.