> How many would actually be needed to burn up the unused fuel of "regular" reactors? Is there some ration of regular:breeder that would be needed (5:1, 8:1, 13

> How many would actually be needed to burn up the unused fuel of "regular" reactors? Is there some ration of regular:breeder that would be needed (5:1, 8:1, 13:1)? Depends on the specifics, e.g. Russia is proposing a 2:1 ratio for a cycle they're planning: http://www.world-nuclear.org/information-library/country-profiles/countries-o-s/russia-nuclear-fuel-cycle.aspx http://www.world-nuclear.org/information-library/country-pro...