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Nuclear Radiation

Nuclear Radiation. Found in the environment (background radiation). Sources of radiation Sun, heat, soil, rocks, plants Exposure to radiation varies greatly based on location. Activities can increase radiation exposure Smoking 1 ½ packs of cigarettes a day =8000 millirems/year.

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Nuclear Radiation

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  1. Nuclear Radiation Found in the environment (background radiation)

  2. Sources of radiation • Sun, heat, soil, rocks, plants • Exposure to radiation varies greatly based on location

  3. Activities can increase radiation exposure • Smoking 1 ½ packs of cigarettes a day =8000 millirems/year

  4. Flying 720 hours (airline crew) = 276 millirems/year • Inhaling radon = 360 millirems/year • Giving or receiving medical Xrays = 100 millirems/year

  5. Beneficial Uses of Radiation • Medical Diagnoses and Treatment • Research Applications • Industrial/Manufacturing Applications • Food Irradiation • Consumer Products/Safety and Security • Spacecraft Power Supply • Electric Power Generation

  6. Medical Uses • Diagnostic • Generally low doses • Short-time exposures • Therapeutic • Generally high doses • Short to long time exposures

  7. Skeletal Scan of Person After a Tc-99m nuclear Medicine Injection

  8. Food Irradiation • Food treatment comparable to pasteurization • Kills pests/microorganisms without harming food • Controls sprouting • Does not make the food radioactive • FDA Approved • Must be labeled

  9. Spacecraft Power Supplies • Small radioactive sources have provided heat and electrical power for space probes for decades • Radioactive power supplies have allowed space craft to explore the outer solar system, too far from the sun for solar panels to be effective

  10. Consumer ProductsSafety and Security • Smoke Detection Equipment • Self-powered Lighting in Exit Signs • Lighted Aircraft Instrumentation • Pharmaceutical Detection • Bomb/Weapons Detection • Scanning and Surveillance Equipment • Theft Deterrent Systems

  11. Electric Power Generation • Nuclear Power supplies about 20% of the country’s electric power • Unlike fossil fuels, nuclear power does not release greenhouse gasses

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