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NUCLEAR ENERGY. Or How The World Learned To Stop Worrying and Love the Alternative Energy Source Sophia Khan and Dom Bolton. WHAT IS NUCLEAR ENERGY?. Dec. 2, 1942: Chicago-Pile 1 Uranium Renewable Reactors and power plants. BUT I THOUGHT…. FRIENDLY TERMS.

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Nuclear energy

NUCLEAR ENERGY

Or How The World Learned To Stop Worrying and Love the Alternative Energy Source

Sophia Khan and Dom Bolton


What is nuclear energy
WHAT IS NUCLEAR ENERGY?

  • Dec. 2, 1942: Chicago-Pile 1

  • Uranium

  • Renewable

  • Reactors and power plants



Friendly terms
FRIENDLY TERMS

Fission: nuclear reaction which splits massive nuclei into smaller ones while releasing energy

Kyoto Protocol: reduce greenhouse gases



How it works cont
HOW IT WORKS (cont.)

Core: encased in metal, high temperature and pressure

Fuel assemblies: differ, long rods, release large amount of neutrons  high energy

Control Rods: cadmium, heavy neutron absorbers, level of absorption, power up or down

Moderator: slows down neutrons, coolant


How it works cont1
HOW IT WORKS (cont.)

High pressure steam

Goes to turbines

Generates electricity

Closed in by thick concrete


Uranium
URANIUM

Ore mined

Then crushed

And Uranium extracted

85% total radioactivity (from radon gas)


Inside a reactor
INSIDE A REACTOR

75 000 tons of uranium = 17% of world’s power requirements

Levels of water cooling

Light, Heavy, Pressurized, Boiled

Generation III and III+

Increase efficiency

Higher temperature

Higher pressure


The future
THE FUTURE

  • Different generations

  • Worldwide

    • 440 reactors in 31 countries

    • 367 gigawatts = 16% of world's electricity

    • Next 15 years: 60 new plants = 17% electricity

  • China

    • Goal: 4% electricity from nuclear energy

    • By 2020: 41 power plants


Benefits
BENEFITS

  • Powerful

  • Durable

  • Clean


The energy crisis
THE ENERGY CRISIS

  • Never-ending search

  • U.S. Dept. of Energy predicts 75% in electricity use 2000-2020

  • Electricity: 1/3 of greenhouse gas emissions

  • Problem for current nuclear reactors: coal-fired


Downfalls
DOWNFALLS

  • Uranium Mining

    • Lead-210 and Polonium-210

    • Limited: 3 256 000 tons left

  • Nuclear Waste and Storage

    • Continue to release radiation

    • Canada: 200 million pounds

  • Disasters (Chernobyl)

    • Breeder reactors and plutonium

  • Non-renewable

    • 42 years of reserves left


To get the ball rolling
TO GET THE BALL ROLLING…

103 plants = 20% electricity

US Nuclear Regulatory Commission (NRC)

Initial cost high, but low later

Burn more fuel

Fuel flexibility

Plutonium, thorium, LEU, MOX



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