Having significantly high level of radiation detected in the seawater, Fukushima Diary researched past sea contamination data. There have been countless numbers of contamination water leakage. It is not announced the total amount of radioactive material leaked to the environment. In March 2012, Tepco had the major leakage at the desalination system. Highly contaminated water leaked to the sea nearly for 4 hours. (cf, 1.4×10^11 Bq/m3 of beta nuclides leaked to domestic sewage system [URL]) In this accident, Tepco announced … Continue reading [2012]Tepco monitored seawater contamination 10 mins before they “found” the leakage, 850,000 Bq/m3 of Sr-90 detected