If I can speak to that, many of the changes that will be made at the NRU reactor and the other isotope production facilities will be done with the NRU in operation. This is actually going to be quite different from the refurbishment of a commercial CANDU reactor in that the work that's being done does not affect the reactor vessel itself or the core materials. It's mainly around support systems.
On February 24th, 2009. See this statement in context.