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Jan27-12, 07:51 PM
P: 59
Quote Quote by Astronuc View Post
CANDUs still fission U-235, which is at a level of ~0.71% of natural U. The burnups of the fuel are also low, ~8-10 GWd/tU. Modern CANDU fuel uses slightly enriched uranium.

In thorium, there is no naturally occurring fissile isotope. Thorium fuel needs a fissile component, e.g., U-233, U-235 or Pu-239, Pu241.
Yes, I know. Poor communication on my part though, I suppose. It just reminded me, that's all. And, correct me if I'm wrong, but don't the operating CANDU fleet all use natural uranium? I was under the impression that only the ACR-1000 is designed to use SEU, and that project is on hiatus since the sale to SNC-Lavalin.