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To: John Stopforth who wrote (55402)9/15/2001 7:05:53 PM
From: hmalyRead Replies (1) | Respond to of 275872
 
John Re..Wrong, Candu is heavy water nuclear reactor. Heavy water
or Deuterium is used as a moderator in Candu reactors.
Candu was developed in Chalk River, Ontario in 1946.<<<


Heavy water AFAIK has the same limitations as water, in that when you lose the water, the core must be shut down to avoid a meltdown. The Helium reactors shut down automatically, as you need Helium to sustain the reaction. Helium is also inert, and as such doesn't carry radiation out of the core should a leak occur.