According to Southern Company, which is building two new reactors at Plant Vogtle:
1886 was more than 100 years ago! Probably a 500 year event. Oh, wait, we had a 700 year flood here a few years ago. And those earthquakes in Colorado and Virginia were 100 year events….Among the largest known regional earthquakes was an 1886 earthquake that struck Charleston, S.C., about 85 miles from the Plant Vogtle site….
Well, if it was near Charleston it must have been minor, less than that 6.8 quake in Virginia just now (within a few dozen miles of a nuke). Except USGS says the Charleston quake was 7.3 magnitude:
This is the most damaging earthquake to occur in the Southeast United States and one of the largest historic shocks in Eastern North America. It damaged or destroyed many buildings in the old city of Charleston and killed 60 people. Hardly a structure there was undamaged, and only a few escaped serious damage. Property damage was estimated at $5-$6 million. Structural damage was reported several hundred kilometers from Charleston (including central Alabama, central Ohio, eastern Kentucky, southern Virginia, and western West Virginia), and long-period effects were observed at distances exceeding 1,000 kilometers.So let’s see, 86 miles is 137 kilometers.
The most recent San Francisco earthquake, the Little Big One of 1989,
was a 7.1.
That’s the one that turned the 880 freeway into the 440
by collapsing the upper deck and closing the Bay Bridge.
Well, at least they’re not building a solar power plant on the Savannah River. If those things break in a quake you get… sunshine.
-jsq
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