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U.S. government proposes 17-year delay in start of Hanford nuclear tank cleanup -- until 2039
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Its going to be an asymptotic approach to flawless safe design. You can get closer with each iteration, but there is always risk with nuclear tech. It will never be totally safe, and cleanup will never remove all contaminants.
At least for cleanup this has been accepted; there are limits of "clean" that can be agreed on. But for operational design, its not the case. Because of 3-Mile, Chernobyl, Fermi, and others, the risks have not been negotiated. Plants will be safe or there will be no plants.
And in the meantime, costs are also asymptotic, approaching infinity over time.
Glass vitrification is still the best solution going for the highly toxic categories for all contaminants. Put the crap in with some sand, then burn it at high temps, or more likely use high current electrodes to turn the liquid sludge into a solid. It remains toxic and radioactive, but at least it can be transported and stored without danger to groundwater.
...that we should use old CRT glass for this purpose. We have huge volumes of the stuff for which there's no clear disposal path. The problem? 12%-20% lead content. It seems obvious to use that characteristic for nuclear waste sequestration - grind the glass to a fine degree, then use as you've described and get the added benefit of blocking some of the more harmful radiation.
Heck, they are still not willing to admit to what was done - and not done there in the first place.....
Happy Listening
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