The government and Tokyo Electric Power Company have faced the pressing need to dispose of treated water now kept in tanks. One option is to dump it into the sea, as tritium is said to pose little risk to human health. If the plan goes ahead, tritium-tainted water from the nuclear plant is expected to be diluted so it is likely to lower the levels of other radioactive materials as well before being discharged. But locals and fishermen are worried about the water discharge and a government panel debating how to deal with it has mainly focused on tritium, not other radioactive substances. According to Tepco, a maximum 62.2 becquerels per litre of lodine 129, far higher than the 9 becquerel legal limit, was found in the water filtered by the Advanced Liquid Processing System used to remove various types of radioactive materials. Tepco, which gathered data in fiscal 2017 through March, also detected a maximum 92.5 becquerels of Ruthenium 106 – more than the 100 becquerel legal limit – and 59 becquerels of technetium 99 against the limit of 1,000 becquerels.
South China Morning Post 19th Aug 2018 read more »