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

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<ul><li> Slide 1 </li> <li> THE FUTURE OF FUKUSHIMA CHAPTER 23 NUCLEAR POWER Can nuclear energy overcome its bad rep? </li> <li> Slide 2 </li> <li> March 11, 2011 Fukushima Daiichi Nuclear Disaster Worlds most expensive natural disaster $300,000,000,000 </li> <li> Slide 3 </li> <li> 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). </li> <li> Slide 4 </li> <li> 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. </li> <li> Slide 5 </li> <li> Atoms 101 </li> <li> Slide 6 </li> <li> Nuclear Energy Energy released when an atom is either split (fission) or combines with another atom (fusion). </li> <li> Slide 7 </li> <li> 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 </li> <li> Slide 8 </li> <li> The Fission Reaction A chain reaction releases about 10 million more times of heat than burning fossil fuels. </li> <li> Slide 9 </li> <li> Isotopes Atoms that have the same number of protons but different numbers of neutrons </li> <li> Slide 10 </li> <li> Uranium Isotopes </li> <li> Slide 11 </li> <li> Radioactive Decay Pathway for Uranium - 238 </li> <li> Slide 12 </li> <li> Radioactive Half-Life </li> <li> Slide 13 </li> <li> The Penetrative Ability of Different Radioactive Particles </li> <li> Slide 14 </li> <li> Mining for Uranium </li> <li> Slide 15 </li> <li> Uranium Fuel Rod Assembly </li> <li> Slide 16 </li> <li> Fuel Rods Cylinders filled with uranium pellets that provide the fuel for fission reactors. </li> <li> Slide 17 </li> <li> Control Rods Rods that absorb neutrons to control the nuclear chain reaction. </li> <li> Slide 18 </li> <li> 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 </li> <li> Slide 19 </li> <li> How a Nuclear Power Plant Generates Electricity: Pressure Water Reactor </li> <li> Slide 20 </li> <li> How a Nuclear Power Plant Generates Electricity: Boiling Water Reactor </li> <li> Slide 21 </li> <li> 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. </li> <li> Slide 22 </li> <li> Major Nuclear Disasters 1. 1979. Three Mile Island. PN, USA 2. 1986. Chernobyl, USSR 3. 2011. Fukushima, Japan </li> <li> Slide 23 </li> <li> Materials with low levels of radiation Can be safely buried USA produces 100,000 tons/year Low-Level Radioactive Waste </li> <li> Slide 24 </li> <li> High-Level Radioactive Waste From spent fuel rods and nuclear weapons USA produces 2000 tons/year No long-term storage plan </li> <li> Slide 25 </li> <li> Pros &amp; Cons of Nuclear Power </li> <li> Slide 26 </li> <li> Although many people are scared of nuclear power, it has a good safety record! </li> <li> Slide 27 </li> <li> Despite the enormous financial and emotional costs of the Fukushima-Daiichi disaster, very few deaths were the direct result of the accident. </li> </ul>