P3aw E
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Transcript of P3aw E
Nuclear Energy
Nuclear Energy
By Andrew WallerBy Andrew Waller
How it works How it works
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Uranium Uranium
• Upon bombardment with slow neutrons, its uranium-235 isotope will most of the time divide into two smaller nuclei, releasing nuclear binding energy
• Upon bombardment with slow neutrons, its uranium-235 isotope will most of the time divide into two smaller nuclei, releasing nuclear binding energy
Nuclear Energy Nuclear Energy
• Nuclear fission achieved in 1934.• In 1954 the world's first nuclear.
power plant was put on-line.• In 1979 the accident at Three Mile
Island and in 1986 the Chernobyl disaster happened.
• Nuclear fission achieved in 1934.• In 1954 the world's first nuclear.
power plant was put on-line.• In 1979 the accident at Three Mile
Island and in 1986 the Chernobyl disaster happened.
Life-cycleLife-cycle
• Uranium mining• Enriched• Delivered• Reprocessing after use. 95% of
spent fuel can be recycled
• Uranium mining• Enriched• Delivered• Reprocessing after use. 95% of
spent fuel can be recycled
Water use Water use
• Over 4 million gallons a day. • Two-thirds of the energy produced
goes into waste heat.• Droughts can pose a problem by
causing the source of cooling water to run out.
• Over 4 million gallons a day. • Two-thirds of the energy produced
goes into waste heat.• Droughts can pose a problem by
causing the source of cooling water to run out.
Waste Waste
• 25–30 tonnes of spent fuel each year.
• Most U.S. waste is currently stored in temporary storage sites requiring oversight
• Underground storage at Yucca Mountain in U.S.
• 25–30 tonnes of spent fuel each year.
• Most U.S. waste is currently stored in temporary storage sites requiring oversight
• Underground storage at Yucca Mountain in U.S.
AdvantagesAdvantages
• Nuclear power generation does emit relatively low amounts of carbon dioxide (CO2).
• This technology is readily available.
• It is possible to generate a high amount of electrical energy in one single plant.
• Nuclear power generation does emit relatively low amounts of carbon dioxide (CO2).
• This technology is readily available.
• It is possible to generate a high amount of electrical energy in one single plant.
DisadvantagesDisadvantages
• The problem of radioactive waste is still an unsolved one.
• High risks: Despite a generally high security standard, accidents can still happen.
• The problem of radioactive waste is still an unsolved one.
• High risks: Despite a generally high security standard, accidents can still happen.
Three Mile Island/ChernobylThree Mile Island/Chernobyl
QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
are needed to see this picture.
Yucca MountainYucca Mountain
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Transport Transport
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are needed to see this picture. QuickTime™ and aTIFF (Uncompressed) decompressor
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Nuclear power in shipsNuclear power in ships
• The first nuclear-powered submarine, USS Nautilus put to sea in 1955
• Development of nuclear merchant ships began in the 1950s, but has not generally been commercially successful.
• The first nuclear-powered submarine, USS Nautilus put to sea in 1955
• Development of nuclear merchant ships began in the 1950s, but has not generally been commercially successful.
Naval nuclear accidentsNaval nuclear accidents
• USS Thresher (sank, 129 killed) USS Scorpion (sank, 99 killed)
• 19 Russian or Soviet accidents
• USS Thresher (sank, 129 killed) USS Scorpion (sank, 99 killed)
• 19 Russian or Soviet accidents
The EndThe End
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