NRC director Gregory Jaczko speaks to members of Senate public works panel . ` ` We do n't see significant changes on a day - to - day basis with the reactors , '' Jaczko says . Sen. Barbara Bush seeks information on safety of U.S. citizens in seismic situations . Boxer pointed out that two of the nuclear plants in California were built to withstand a certain level of earthquake , pointing out in Japan Questions arise about whether evacuation zones in the U.S. need to be expanded .
NRC director Gregory Jaczko speaks to members of Senate public works panel . ` ` We do n't see significant changes on a day - to - day basis with the reactors , '' Jaczko says . Sen. Barbara Bush seeks information on safety of U.S. citizens in seismic situations . Questions arise about whether evacuation zones in the U.S. need to be expanded .