GCSE Combined Science (AQA)

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Protection from Irradiation

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Atomic structure Atoms and nuclear radiation

Protection from Irradiation

1:46 Contamination and Irradiation
Spec 4.4.2.4
Previous Irradiation Next Irradiation & Radiation Type
  • Radiation intensity decreases with distance from the source.
  • Radiation spreads out in all directions.
  • Radioactive sources should be handled with long tongs to increase distance from the source.
  • Gloves should be used for additional protection, but are not sufficient alone.
  • Thick metal, such as a few centimeters of lead, can stop all types of radiation, including gamma rays.
  • Metal protection allows observation of radiation without being irradiated.
  • Such setups are used in labs, hospitals, and nuclear reactors.
  • Exposure time to radioactive sources should be minimized to reduce overall radiation exposure.
  • When not in use, radioactive sources should be stored in shielded, thick metal containers.
  • Containers are sealed to prevent radiation escape.
  • These containers are used for storing samples in labs, fuel rods in nuclear reactors, and burying radioactive waste.
  • These protective measures should be recalled during exams when asked about irradiation protection.

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