The radiation effects from the Fukushima Daiichi nuclear disaster are the observed and predicted effects as a result of the release of radioactive isotopes from the Fukushima Daiichii Nuclear Power Plant following the 2011 TÅhoku 9.0 magnitude earthquake and tsunami (Great East Japan Earthquake and the resultant tsunami). The release of radioactive isotopes from reactor containment vessels was a result of venting in order to reduce gaseous pressure, and the discharge of coolant water into the sea. [Source: Wikipedia 
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