The article also didn't give any numbers at all. How much radioactivity are we talking about here? Talking about "tonnes of radioactive water" is meaningless.
80 MBq/L * 300,000 L = 24 TBq
Investigations showed that the level of water in the tank was about 3 metres lower than expected, indicating that some 300 cubic metres had escaped.
Tepco told WNN that the leaked water had already passed through the first 'SARRY' stage of decontamination, which had removed most of the radioactive caesium. It was yet to pass through the 'ALPS' treatment that would remove strontium and other beta-emitting radionuclides. As such its radioactivity is considered medium-to-low at 80,000 becquerels per cubic centimetre. Dose rates measured for gamma and beta radiation were high at over 100 milliSieverts per hour, while the dose rate for gamma only was low at just 1.5 milliSieverts per hour. Tepco did not specify if these were dose rates at the water surface or, more likely, a standard 1 metre above the ground.
80 MBq/L * 300,000 L = 24 TBq
Investigations showed that the level of water in the tank was about 3 metres lower than expected, indicating that some 300 cubic metres had escaped.
Tepco told WNN that the leaked water had already passed through the first 'SARRY' stage of decontamination, which had removed most of the radioactive caesium. It was yet to pass through the 'ALPS' treatment that would remove strontium and other beta-emitting radionuclides. As such its radioactivity is considered medium-to-low at 80,000 becquerels per cubic centimetre. Dose rates measured for gamma and beta radiation were high at over 100 milliSieverts per hour, while the dose rate for gamma only was low at just 1.5 milliSieverts per hour. Tepco did not specify if these were dose rates at the water surface or, more likely, a standard 1 metre above the ground.
http://www.world-nuclear-news.org/RS_Leak_from_Fukushima_tan...