" 11,000 becquerels per liter -- TEPCO's
measurement of Cesium-134 on July 9.
" 18,000 becquerels per liter -- TEPCO measurement of Cesium-137 on July 8.
" 22,000 becquerels per liter -- TEPCO's measurement of Cesium-137 on July 9.
" 900,000 becquerels per liter -- TEPCO's measurement of the total radioactivity in the water leaking from Reactor #1. This radiation load includes both Cesium isotopes, as well as Tritium, Strontium and other beta emitters. There are more that 60 radioactive substances that have been identified at the Fukushima site.
A becquerel is a measure of the radioactivity a substance is emitting, a measure of the potential danger. There is no real danger from radiation unless you get too close to it -- or it gets too close to you, especially from inhalation or ingestion.
Nobody Knows If It
Will Get Worse, Get Better, or Just Stay Bad
The water flow through the Fukushima accident site is substantial and constant, both from groundwater and from water pumped into the reactors and fuel pools to prevent further meltdowns.
In an effort to prevent the water from reaching the ocean, TEPCO is building what amounts to a huge, underground dike -- "a deeply sunken coastal containment wall." The NRA is calling on TEPCO to finish the project before its scheduled 2015 completion date.
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