"Fogbank," the aerogel at the heart of this issue, is made with very toxic solvents. It would not surprise me that most of the documentation on the processes to make it were destroyed to avoid litigation over health and safety issues.
More likely they can't buy one of the component chemicals.
It's quite common in aerospace/defence kit that you need a solvent or an insulation that isn't made anymore because of environmental concerns. You can't exactly say to the maker - I need you to keep making chemical X because it's a top secret part of our weapons design!
The other problem is that it's rather difficult to test whether a replacement will work as well. You cant really ask the maker if their new aerogel formulation works the same when used in a nuclear bomb!
The story is also a slight red herring - the UK navy leases the Trident missile from the US but designs and manufactures it's own warheads.
I remember when a physicist came to give a lecture at Cornell about the difficulties of cleaning up Hanford, Washington. It was a hair-raising presentation. I forget the details, but the gist is here:
Some physicist will correct me, but I think this is more of an accounting trick than a technological one: it serves to ask for more money.
I have no evidence, but my impression is, that aerogel is used to track the ageing of the decaying warheads, also providing data for the computed simulations to be more realistic. Such aerogel is readily available on the free (in the doublespeak sense) market.
The building it was originally made at in Y-12 (called facility 9404-11) was torn down in 2004. The nasty solvent (which metabolises in the body into cyanide) called acetonitrile, of which Wikipedia claims there is supposedly a world shortage as the sole remaining factory producing it was shut down in 2008 (to reduce pollution) for the Olympics.
This is so concerning on so many levels. The ineptitude and lack of accountability by the powers that be is borderline criminal.
In a separate vein I'm sure I'm not the only one to realize that people in the West, and in America in particular, have forgotten how to make things. Be it fogbank, tanks, textiles, semiconductors and soon to be cars. We keep farming out manufacturing to the lowest oversees bidders and soon enough all we know how to do is place orders.
What happens, god forbid, when our trading partners become our enemies and they withhold the materials which we need to fight them. How about the semiconductors used in critical systems are compromised by foreign actors? All we can do is hope people at the helm have already thought of this stuff and are doing things to mitigate the risk. I'm not too sure.
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[ 3.0 ms ] story [ 34.2 ms ] threadThe other problem is that it's rather difficult to test whether a replacement will work as well. You cant really ask the maker if their new aerogel formulation works the same when used in a nuclear bomb!
The story is also a slight red herring - the UK navy leases the Trident missile from the US but designs and manufactures it's own warheads.
http://www.newscientist.com/article/mg14119133.900-the-dirti...
It was one hair-raising talk. And so I was not at all surprised by this fascinating news article from earlier this year:
http://www.newscientist.com/article/dn16447-earliest-weapons...
I have no evidence, but my impression is, that aerogel is used to track the ageing of the decaying warheads, also providing data for the computed simulations to be more realistic. Such aerogel is readily available on the free (in the doublespeak sense) market.
http://en.wikipedia.org/wiki/Acetonitrile
http://www.armscontrolwonk.com/1814/fogbank
http://en.wikipedia.org/wiki/Teller%E2%80%93Ulam_design
In a separate vein I'm sure I'm not the only one to realize that people in the West, and in America in particular, have forgotten how to make things. Be it fogbank, tanks, textiles, semiconductors and soon to be cars. We keep farming out manufacturing to the lowest oversees bidders and soon enough all we know how to do is place orders.
What happens, god forbid, when our trading partners become our enemies and they withhold the materials which we need to fight them. How about the semiconductors used in critical systems are compromised by foreign actors? All we can do is hope people at the helm have already thought of this stuff and are doing things to mitigate the risk. I'm not too sure.