[geeks] Global warming, was Mr Bill?

[Shannon Hendrix]

On Sep 25, 2008, at 10:35 , Sandwich Maker wrote:

> while the half life of pu-239 is only 24Ky, u-238 [unfissionable in
> current reactors] is 4.5Gy.  even u-235 half life is 0.71Gy.  and high
> level 'waste' is essentially pure oxide, and while i admit i don't
> know the analysis a large percentage has to be u-238; afaik even after
> enrichment the bulk of the fuel load is u-238.

Well, it seems like the guys at Yucca Mountain are counting on most of  
the really hot stuff cooling off to acceptable levels before a million  
years from what they were saying.

Of course, maybe that's a certain definition of "acceptable".


-- 
"Where some they sell their dreams for small desires."