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To: Bob Fairchild who wrote (37931)4/10/2007 10:39:15 AM
From: russet  Read Replies (1) | Respond to of 78419
 
Candu's have an automated replacement of rods when the reactor is live. The reactor does not shut down to replace fuel rods.

I think your assumption that a spent rod from a light water reactor gives a shorter commercial lifespan in a candu may or may not be true but does it matter? Clearly the initial burn did not use up all the fissionable material. Candu reactors must be more efficient in this way.

As the cost for U rises, processing the fissionable remains of spent fuel rods becomes commercially viable, which I would say is the main take home point of the article. Both Canada and the South Koreans have active research programs devoted to processing spent fuel rods, and there is millions of lbs of them out there waiting.