Film: 6662

Science | 1970 | Sound | Colour

Synopsis:

Principles of Nuclear Fission

Power station substation. High voltage pylons. A nuclear power station linked to pylons. Another view of the nuclear power station. A technician is working at the controls of a power station (may be a conventional station). View of possibly of a conventional power station's boiler (where steam is produced which in turn drives a turbine, the turbine is coupled to a generator). View of the generator (produces electricity). Another view of another technician working at the controls of a conventional power station. A man is kneeling on the floor of a nuclear power station, he appears to be "sweeping" the floor with a radiation counter. General view of the inside of the nuclear power station. General view of the inside of a library (three floors high). A book is opened to show a page containing "the periodicity of the elements". Close up on the page, focusing on the carbon, nitrogen, boron and oxygen elements. An animation representing the carbon atom (shows the electron orbits and nucleus, which consists of positively charged protons and neutrons which have no charge). Carbon 12 and Carbon 13 are explained. Animation illustrates the forces that hold the components of the nucleus together. Animation showing the atom being bombarded by neutrons, the neutrons when strike usually bounce off but they may also be absorbed into the nucleus. Animation describing the nucleus of Uranium235 being split into two parts (fission), this was caused by a neutron striking the nucleus of Uranium235. Animation shows the fission of Uranium235 which produces heat and some radiation, three neutrons are thrown off and each is capable of causing another Uranium235 fission thus causing a chain reaction, however only very few neutrons cause fission. Animation describes a material (called a modurator) that is used to surround Uranium235, this material causes the neutrons to loose energy and thus increases the chances of knocked out neutrons, produced during fission, to produce a chain reaction. The outside of a nuclear power station. Another nuclear power station. Uranium containers. A technician is handling Uranium containers used to fuel the chain reaction. A technician places a Uranium container into a graphite container, the graphite acts as the modurator. An American nuclear power station (Ginna RGE Station), in this station, water is the modurator. The outside of a Canadian nuclear power station, a few close up views, the modurator is heavy water. The inside of a nuclear power station. Outside view of a fast reactor nuclear power station ( in this station, the fast neutrons direct from fission are used to cause further fission). Sheep are grazing outside the power station. Animation which compares and describes a thermo nuclear reaction with a fast nuclear reaction. Animation describing the fast reactor. More views of the inside of a nuclear power station (thermo nuclear one). General outside view of a fast reactor power station (British). Animation showing Uranium235 atoms splitting.


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