3I agree. That was just a meeting of the minds and not meant to be technical or practicable.
It's funny decades ago all around the plant there were these 'evacuation signs' and maps with all these funny arrows pointing this or that way. After the 8.6 billion dollar refit and unit 3 was lit they took all that stuff down.
TVA never said a word about it however most thought that running was not going to do you any good, and because of prevailing winds, you are better just staying where you are.
After 9/11 and another gazillion more dollars the plant is now safer that it has ever been from any kind of attack from the air. For years photos of the plant had been redone so that it looked totally different than it really does look like. And the buffer zone now extended some 25 miles.
If you recall in 1944 the Skoda Arms works on the Austria-Hungary border were elaborately rebuilt from balloons, cardboard and or anything laying around to resemble the plant from the air.
Same thing here as the pictures you see of Browns Ferry are not at all what it looks like as a measure to prevent terrorism.
In the build up to Operation Uranus the Red Army used reindeer, glue pots and logs painted silver to fool Luftwaffe search planes that the railway was being extended when in reality scores of canvas covered lorries were going the other direction.
The Grand Master of them all Confederate Calvary General Nathan Bedford Forrest used a series of hollowed out logs, his drum and fife corps, along with hundreds of deer antlers being rattled by his mobile wounded, to convince General Alexander McCook that his infantry was gathering in his rear.
Although McCook was blamed for the first day massacre President Grant said it was the heartiest laugh he ever heard from President Lincoln about the gaslight-a term used a lot in the war.
That happened about 9 miles from here.