How Solar Storms And Nukes Threaten The Power Grid
CREDIT: Pictureguy/Shutterstock.com
Space.com
WASHINGTON — The United States’ electrical transmission grid can be a fragile thing.
Sewage treatment plants, water filtration services and other key utilities rely on the grid to power their facilities. But some officials and experts worry that the infrastructure is exceedingly vulnerable to natural and human attack, said speakers and panelists at the fourth annual Electric Infrastructure Security Summit held here earlier this week.
While most vital organizations have enough backup power to last for a few days or a week, even essential facilities, such as hospitals or military bases, probably could not continue to function during a large-scale blackout that lasted more than a week.
Yet such extended blackouts could happen, as a result of a man-made electromagnetic pulse (EMP) or an extreme solarstorm.
“For a large, interconnected power grid just in North America — even with three grids — you can have a disturbance footprint that spans the entire North American continent,” said John Kappenman, principal investigator for the National Academy of Sciences Space Weather Study.
(The continental U.S. and Canada are served by three independent but linked power grids — one east of the Rockies, another west of the Rockies and the third in Texas.)
In Kappenman’s worst-case scenario, copper wires would melt, making it very difficult for engineers to get the grid back online within weeks or even months.
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