`` Venting to protect containment integrity and to mitigate the impact of a serious event is among the long-established training responses that are part of these facilities ' severe accident mitigation guidelines , '' according to a statement from the Nuclear Energy Institute , a trade group for the industry . NRC requires changes at three plants . Nuclear Regulatory Commission wants enhancements to help contain damage from any accident . Reactors are similar in design to Fukushima plant in Washington . Earthquake , tsunami caused meltdown at Fukushima in last year .
NRC requires changes at three plants . Nuclear Regulatory Commission wants enhancements to help contain damage from any accident . Reactors are similar in design to Fukushima plant in Washington . Earthquake , tsunami caused meltdown at Fukushima in last year .