[en] The CANDU 300 design is basically a sealed-down version of the highly successful CANDU 600. The actual power is about 450 MWe. The capital cost is kept competitive by 'beating thee scaling factor'. Thus , the number of some components is halved, giving two steam generators, two main coolant pumps, and one fuelling machine, etc.; but also, the use of remote controllers and multiplexed data highways replaces much of the instrumentation and control cabling. The CANDU 300 is designed for rapid modular construction, ease of maintenance, and reasonably fast replacement of components (within 90 days or less)