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comment by user-inactivated
user-inactivated  ·  2565 days ago  ·  link  ·    ·  parent  ·  post: Pubski: November 15, 2017

    Vessel breach on a nuclear reactor is a big deal - as it turns out, a much bigger deal than most amateurs can guess. Odds are good that anybody with the knowledge to carry out a targeted frontal assault on a nuclear reactor will recognize that the amount of ordnance and planning necessary can be more efficiently applied elsewhere.

Regarding the case study itself, I gathered a private for the national guard wouldn't have had the resources to pull off the stint, but the evidence towards outside help in cracking the egg apparently was worth note.

    Beyond that, containment has been the fundamental design parameter for pretty much all modern reactors, of which I would consider Turkey Point an exemplar. [...] The data likely isn't there because the critical release you care about requires the kind of violence where you've likely got other problems. You can't just crack a reactor like an egg and if you've got the kind of juice to crack a reactor like an egg, you can do more impactful things like, well. You know. 9/11.

Had a facepalm moment understanding the difference in info I was looking for from NRC and the case in your last example. Running back to Turkey Point's wiki page, I found the sources I needed,. Guess that rules out: "this is a problem that hasn't been addressed".

Thanks for the insight, as always.

Perhaps specifying the question further like affected wetlands, property damage/insurance coverages, etc. Hm.





kleinbl00  ·  2565 days ago  ·  link  ·  

It would be worth laying out the sheer violence necessary. The DTIC will happily help you out. You're looking for damage category B (perforation), thickness of slab over a meter. It appears that a 22kg shaped charge will perforate a 1.2m reinforced concrete wall. We're on beyond ammonia weapons here, by the way, although Tim McVeigh kinda sorta shaped the OKC bomb. He also had 6200lbs of "energetic materials" or 5,000lb of TNT (2.5kT for those keeping track at home).

Turkey Point, bless their hearts, has a cutaway of their setup:

So. to perf the reactor vessel in a properly showy fashion you have to broach:

- 3-4 feet of reinforced concrete. Clearly, our 22kg shaped charge will do that.

- 2 inches of steel. not tough at all in splendid isolation, more challenging when surrounded by concrete.

- an air gap. Excellent for dissipating kinetic energy.

- 3-7 feet of concrete shielding. between 25 and...? worth of explosive, after the concrete, the steel and the air gap.

- Another air gap.

- 8-9 inches of steel.

So... it's certainly possible to do this level of damage. You might be able to do it with a ryder truck full of explosives. But you're effectively trying to break open a bank vault in a concrete bunker in a bank vault in a concrete bunker. Set aside for a moment the fact that you're the master of the universe if you can sneak this level of malfeasance next to a reactor. Mad props. A bigger concern, I think, is that any anticipated fallout pattern is going to be highly sensitive to the style of breach. I think (not sure, but think) you're in bunker-buster territory and most of your dissipation is going to be from the primary breach event. At which point it isn't even really a "reactor" question anymore, it's an "impressive amounts of KE" question.

user-inactivated  ·  2560 days ago  ·  link  ·  
This comment has been deleted.
user-inactivated  ·  2560 days ago  ·  link  ·  

    I think (not sure, but think) you're in bunker-buster territory and most of your dissipation is going to be from the primary breach event. At which point it isn't even really a "reactor" question anymore, it's an "impressive amounts of KE" question.

Best I can situate the proposal at this rate is pulling a trick from entry-level physics and asking my audience to imagine for a moment that this breach occurred in a vacuum for the sake of the map itself. Though, this would be silly to dismiss given the info provided. Looks like St. Lucie's got the same, if not similar, set up.