tion' or 'Fission.'
             When the nucleus of a uranium atom is struck by a neutron travelling at the right
             speed, it splits into fragments that separate rapidly and
             generate heat. It also gives off a few new neutrons. In order to sustain a continuous
             nuclear reaction, the speed of these neutrons must be slowed down or moderated.
             CANDU reactors use heavy water (Deuterium Oxide is called heavy water because it is
             heavier than normal water by about 10%). Thus the reactor is named CANDU, for
             During Fission (the process used in nuclear reactors), some of the atoms breaks up, and
             energy is released. On average, 80% of the released energy is carried off by the fragments
             in the form of kinetic energy. The other 20% is collected by heavy water in the form
             The core of a reactor is contained in a large cylindrical tank called the 'Calandria.' The
             Calandra contains a series of tubes that run from one end of the calandria to the other.
             Inside the calandria tubes are smaller tubes that house fuel bundles containing natural
             uranium in the form of ceramic pellets.
             Heavy water is also used as the reactor coolant and is pumped through the tubes
             containing the fuel pellets to pick up heat generated from the reaction. The heated, hea
             ...