Power Systems
The main advantage of the Decoupled Load Flow (DLF) as compared to the NR method is

 reduced memory requirements in storing the Jacobian elements
All of these
 number of iterations are less
 accuracy is more

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Power Systems
A CANDU reactor uses

 only fertile materials.
 highly enriched uranium as fuel and water as moderator and coolant.
  natural uranium as fuel and heavy water as moderator and coolant.
 enriched uranium as fuel and ordinary water as moderator and cooler.

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