Water from the fuel pools at the top floors of the No. 7 and No. 2 reactors at the Kashiwazaki-Kariwa nuclear power plant in Niigata Prefecture spilled over due to strong earthquakes, Tokyo Electric Power Company Holdings, Inc. announced Monday. No damage or leakage out of the buildings was confirmed.
Indeed I was thinking of that one. Love the final paragraph.
I thought of mentioning the possibility of corrosion/leaks, but I’m pretty sure they monitor for that, and (though I hadn’t remembered this) even in the What If, it says that the levels likely wouldn’t be serious.