On the morning of the 7th, water was found leaking from the exhaust port of a contaminated water purification system at Tokyo Electric Power Company's Fukushima Daiichi Nuclear Power Plant. The leaked water is estimated to be approximately 5.5 tons, and it is thought to have contained radioactive materials equivalent to 220 times the national reporting standard, and some of it may have soaked into the soil at the site. Therefore, TEPCO has decided to collect leaked water and soil from now on.
According to TEPCO, just after 8:50 a.m. on the 7th, workers at the Fukushima Daiichi Nuclear Power Plant discovered water leaking outside from an exhaust port located outside of a device that removes radioactive materials from contaminated water. I did.
According to TEPCO, when the equipment was inspected and the contaminated water remaining inside was flushed away, a valve that was supposed to be closed was open, and it appears to have leaked out of the exhaust port.
Although the leak stopped when the flow of water inside the device was stopped, TEPCO estimates that approximately 5.5 tons leaked out.
It is also estimated that the leaked water contained approximately 22 billion becquerels of radioactive substances that emit gamma rays, such as cesium-137, far exceeding the national reporting standard of 100 million becquerels.
TEPCO has stated that no external impacts from the nuclear power plant have been confirmed at this time, but as there is a possibility that the leaked water has seeped into the soil at the site, the area has been cordoned off and the leaked water has been removed. We are planning to collect the soil.