Archived material is restricted to Rantburg regulars and members. If you need access email fred.pruitt=at=gmail.com with your nick to be added to the members list. There is no charge to join Rantburg as a member.
#1 seems like a waste of Uranium to use 20% enriched U into a fuel rod when you only need about 4% but maybe the nuclear engineers were overruled by a nuclear fatwa
Posted by lord garth 2012-05-22 17:34||
#2 The entire rod may not be made of the 20% U-235, they only need a few. Once the reaction gets going, you get enough P-239 created from neutron absorption by U-238 to fuel the reactors. When a "spent" fuel rod is removed, nearly all of the fission taking place is from P-239 and most of the uranium is gone.
Posted by crosspatch 2012-05-22 17:58||