THE FUTURE OF FUKUSHIMA CHAPTER 23 NUCLEAR POWER Can nuclear energy overcome its bad rep?
Post on 25-Dec-2015
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- THE FUTURE OF FUKUSHIMA CHAPTER 23 NUCLEAR POWER Can nuclear energy overcome its bad rep?
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- March 11, 2011 Fukushima Daiichi Nuclear Disaster Worlds most expensive natural disaster $300,000,000,000
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- 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).
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- 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.
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- Atoms 101
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- Nuclear Energy Energy released when an atom is either split (fission) or combines with another atom (fusion).
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- 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
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- The Fission Reaction A chain reaction releases about 10 million more times of heat than burning fossil fuels.
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- Isotopes Atoms that have the same number of protons but different numbers of neutrons
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- Uranium Isotopes
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- Radioactive Decay Pathway for Uranium - 238
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- Radioactive Half-Life
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- The Penetrative Ability of Different Radioactive Particles
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- Mining for Uranium
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- Uranium Fuel Rod Assembly
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- Fuel Rods Cylinders filled with uranium pellets that provide the fuel for fission reactors.
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- Control Rods Rods that absorb neutrons to control the nuclear chain reaction.
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- 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
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- How a Nuclear Power Plant Generates Electricity: Pressure Water Reactor
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- How a Nuclear Power Plant Generates Electricity: Boiling Water Reactor
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- 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.
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- Major Nuclear Disasters 1. 1979. Three Mile Island. PN, USA 2. 1986. Chernobyl, USSR 3. 2011. Fukushima, Japan
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- Materials with low levels of radiation Can be safely buried USA produces 100,000 tons/year Low-Level Radioactive Waste
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- High-Level Radioactive Waste From spent fuel rods and nuclear weapons USA produces 2000 tons/year No long-term storage plan
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- Pros & Cons of Nuclear Power
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- Although many people are scared of nuclear power, it has a good safety record!
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- 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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