quotes a report from NBC News: Ninety-six aboveground, aquamarine pools around the country that hold the nuclear industry's spent reactor fuel may not be as safe as U.S. regulators and the nuclear industry have publicly asserted, a study released May 20 by the National Academies of Sciences, Engineering, and Medicine warned. Citing a little-noticed study by the Nuclear Regulatory Commission, the academies said that if an accident or an act of terrorism at a densely-filled pool caused a leak that drains the water away from the rods, a cataclysmic release of long-lasting radiation could force the extended evacuation of nearly 3.5 million people from territory larger than the state of New Jersey. It could also cause thousands of cancer deaths from excess radiation exposure, and as much as $700 billion dollars in costs to the national economy.
The report is the second and final study of Japan's Fukushima Daiichi power plant, which was pummeled from a tsunami on March 11, 2011. The authors suggest the U.S. examine the benefits of withdrawing the spent fuel rods from the pools and storing them instead in dry casks aboveground in an effort to avoid possible catastrophes. The idea is nothing new, but it's been opposed by the industry because it could cost as much as $4 billion. The latest report contradicts parts of a study by Nuclear Regulatory Commission staff
released two years after the Fukushima incident. The NRC staff in its 2014 study said a major earthquake could be expected to strike an area where spent fuel is stored in a pool once in 10 million years or less, and even then, "spent fuel pools are likely to withstand severe earthquakes without leaking."