Nuclear09

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Nuclear09

  1. 1. Nuclear Power: Risks and Rewards What do you know about nuclear power and nuclear accidents?
  2. 2. What’s the big idea? Chemical fuel Atomic Fuel Forces = stored energy
  3. 3. Nuclear Power Plant Neutron bombardment Nuclear fission Uranium fuel Cement Things = Reactors Always near water = Cooling lagoons What you see What you don’t see
  4. 4. All together <ul><li>* </li></ul>Control rods capture neutrons- effect on reaction? What happens to * water? <-- -->*
  5. 5. What if it gets out of control ? <ul><li>Nuclear meltdown ! </li></ul><ul><li>Fuel heats up so much </li></ul><ul><li>it melts! </li></ul>Sarcophagus- pour some cement on it
  6. 6. Chernobyl <ul><li>April 26, 1986 </li></ul><ul><li>Ukraine </li></ul><ul><li>Multiple human failures </li></ul><ul><li>Inadequate design </li></ul><ul><li>54 direct deaths </li></ul>Blame game- nuclear technology Or the USSR?
  7. 7. 3 Mile Island <ul><li>March 28, 1979 </li></ul><ul><li>Partial core meltdown </li></ul><ul><li>Structure mostly contained radiation </li></ul><ul><li>Handled poorly </li></ul><ul><li>No long term effects reported </li></ul><ul><li>Can it be safe? </li></ul>
  8. 8. Is it sustainable? <ul><li>Limited amount of uranium oxide (most used fuel) </li></ul><ul><li>Cleaner burning- only emission is steam </li></ul><ul><li>1kg of uranium oxide gives the same amount of electricity as 16,000 kg of coal </li></ul><ul><li>Currently 16% of electricity, if increased to 40% it would run out in 30 years </li></ul>
  9. 9. New Technology <ul><li>Boiler reactors- use up fuel but create some </li></ul><ul><li>Breeder reactors- use up fuel but create more </li></ul><ul><li>Nuclear fusion- doesn’t require uranium fuel </li></ul>
  10. 10. U.S. and Nuclear Power <ul><li>Dwight Eisenhower thought we’d built so many we’d never have to worry about energy again </li></ul><ul><li>No new reactors built since the early 80s </li></ul><ul><li>Currently 104 nuclear power plants in the U.S. </li></ul>
  11. 11. Where are they?
  12. 12. The Nuclear Era? <ul><li>Stated Goals of Obama Administration </li></ul><ul><ul><li>reduce dependence on foreign oil </li></ul></ul><ul><ul><li>not drill in ANWR </li></ul></ul><ul><ul><li>reduce CO2 emissions </li></ul></ul><ul><ul><li>not use Yucca Mountain for waste </li></ul></ul><ul><ul><li>AND block commercial nuclear power expansion (“not optimal”) </li></ul></ul>
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