Sentences with phrase «groundwater radioactivity levels»
This investigation is examining multiple unplanned shutdowns, a transformer fire that triggered the declaration of an unusual event level emergency, and most recently, a radioactive tritium leak that has caused groundwater radioactivity levels to rise more than 65,000 percent.
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On 1 April, TEPCO admitted that levels of radioactivity in groundwater underneath the facility were 10,000 times the legal limit, mainly as a result of contamination with iodine - 131.
Ewing's Russian colleagues, led by Alexander Novikov of the Russian Academy of Sciences, sampled the groundwater taken from wells up to four kilometers from the scene of original contamination, where radioactivity levels reach roughly 1,000 becquerels (nuclei decaying per second) per liter.