THE FUTURE OF FUKUSHIMA CHAPTER 23 NUCLEAR POWER Can nuclear energy overcome its bad rep?

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  • Slide 1
  • THE FUTURE OF FUKUSHIMA CHAPTER 23 NUCLEAR POWER Can nuclear energy overcome its bad rep?
  • Slide 2
  • March 11, 2011 Fukushima Daiichi Nuclear Disaster Worlds most expensive natural disaster $300,000,000,000
  • Slide 3
  • What happened at Fukushima? Nuclear power plant survived a huge Pacific earthquake. This wave of water knocked out the nuclear power plant generators and water cooling system. Earthquake created a monster tsunami (wave). This resulted in a full meltdown of several of its six reactors Accident received the highest rating on the International Nuclear Event Scale (7).
  • Slide 4
  • Nuclear Energy There are currently 432 nuclear power plants around the world. Nuclear is clean (very few toxic gas emissions) 80% of electricity in France is nuclear.
  • Slide 5
  • Atoms 101
  • Slide 6
  • Nuclear Energy Energy released when an atom is either split (fission) or combines with another atom (fusion).
  • Slide 7
  • Nuclear Fission Reaction that occurs when a neutron breaks the nucleus of an atom apart releasing smaller particles. 1 lb. of uranium ore produces the same amount of energy as 100,000 lbs. of coal
  • Slide 8
  • The Fission Reaction A chain reaction releases about 10 million more times of heat than burning fossil fuels.
  • Slide 9
  • Isotopes Atoms that have the same number of protons but different numbers of neutrons
  • Slide 10
  • Uranium Isotopes
  • Slide 11
  • Radioactive Decay Pathway for Uranium - 238
  • Slide 12
  • Radioactive Half-Life
  • Slide 13
  • The Penetrative Ability of Different Radioactive Particles
  • Slide 14
  • Mining for Uranium
  • Slide 15
  • Uranium Fuel Rod Assembly
  • Slide 16
  • Fuel Rods Cylinders filled with uranium pellets that provide the fuel for fission reactors.
  • Slide 17
  • Control Rods Rods that absorb neutrons to control the nuclear chain reaction.
  • Slide 18
  • A nuclear power plant is really very Similar to a coal-burning plant. 1. Fission of UR results in energy released as heat 2. Heat converts water into steam 3. Steam drives a turbine 4. Turbine powers the generator 5. Generator creates electricity for the grid
  • Slide 19
  • How a Nuclear Power Plant Generates Electricity: Pressure Water Reactor
  • Slide 20
  • How a Nuclear Power Plant Generates Electricity: Boiling Water Reactor
  • Slide 21
  • Nuclear power plants use phenomenal amounts of water to cool the fuel rods and create steam. The smoke seen here is really steam released from the cooling tower.
  • Slide 22
  • Major Nuclear Disasters 1. 1979. Three Mile Island. PN, USA 2. 1986. Chernobyl, USSR 3. 2011. Fukushima, Japan
  • Slide 23
  • Materials with low levels of radiation Can be safely buried USA produces 100,000 tons/year Low-Level Radioactive Waste
  • Slide 24
  • High-Level Radioactive Waste From spent fuel rods and nuclear weapons USA produces 2000 tons/year No long-term storage plan
  • Slide 25
  • Pros & Cons of Nuclear Power
  • Slide 26
  • Although many people are scared of nuclear power, it has a good safety record!
  • Slide 27
  • Despite the enormous financial and emotional costs of the Fukushima-Daiichi disaster, very few deaths were the direct result of the accident.

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