Where is America’s cyberdefense plan?

The Empire State Building towers over the skyline of a blackout-darkened New York City just before dawn. (George Widman/Associated Press)That is the online title of an op-ed by Ted Koppel appearing in the Washington Post (the hardcopy headline reads "Before the cyber-blackout"). Koppel, best known for hosting the ABC news program “Nightline” from 1980 to 2005, is the author of the new book, Lights Out: A Cyberattack, a Nation Unprepared, Surviving the Aftermath.

The op-ed raises the specter of a power outage lasting not hours, or days, but weeks, or months, due to a coordinated cyber-attack on the vulnerable U.S. electricity grid.

But the op-ed does not address what this would mean at the 100 still operating atomic reactors across the country, and even at the numerous atomic reactors permanently shutdown.

Even if operating atomic reactors were able to power down and shutdown safely during a power outage, their thermally hot cores would still have to be cooled for several days, or longer, before cold shutdown was reached, or else risk melting down.

Although high-level radioactive waste storage pools would have a longer fuse -- days or even weeks before boiling would expose irradiated nuclear fuel to air, and risk a catastrophic fire -- the pools are not even required to be connected to emergency diesel generators, as reactors are. More.