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Nuclear power

Learn about the history of nuclear power, including the discovery of the neutron by James Chadwick and Enrico Fermi's work on nuclear fission. Explore how nuclear reactors work, their advantages like energy efficiency and small space requirements, and the disadvantages such as environmental issues and nuclear waste disposal challenges.

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Nuclear power

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  1. Nuclearpower

  2. History • Neutronwasfoundby James Chadwick in 1932 • In the 1930’s the researchwascontinuedby Enrico Fermi • He focused on slowneutrons to increase the effectivness of radioactivity • Fermi escapedfromfacists to America and there he continued the research in the name of ”Manhattan Project” • Main focuswas on developing a nuclearweapon • After World War II researchwascontinued to getnuclearpower into a betteruse

  3. Nuclear Fission • In fission reaction a heavy atom’s core splits into two smaller ones, releasing energy at the same time • Uranium’s isotope 235 is used in energy production, for it’s the only isotope found in nature which creates the chain reaction Neutrons crashing and creating two smaller ones->

  4. NuclearReactor • Device used to initiate and control Nuclear chain reaction • Reactors convert thermal energy from fission reaction into electricity • Uranium is the fuel in reactors, Reactors also have a coolant to prevent overheating • Control rods keeps the reaction stable

  5. Reactors in finland • Loviisa nuclear plant has two reactors both with a power of 2x500 MW • Olkiluoto nuclear plant has also tow reactors and both of them has apower of 2x880 MW • A new reactor is being built with a power of 1600 MW

  6. Advantages • Employs people • Energy production is easy and effective • Nuclear fuel is cheap (Uranium) • A small amount of substance creates a large amount of energy • Nuclear power stations takes a little space and they work usually without any problems • Doesn’t cause CO2-pollution

  7. Disadvantages • Adds more enviromental problems • Disaster risk • The biggest problem of nuclear power is that the nuclear waste is undisposable • Creates dangerous radiation • Radioactive waste will continue splitting in half for over 100 000 years • Nuclear reaction time is only 40-50 years.

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