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Isotope Data for Common Radionuclides

The data provided for each radionuclide is useful for assessing the level of risk associated with work with the radionuclide and should be used as an aid when carrying out risk assessment. Information is provided for:

  • The dominant type of radiation emitted for each radionuclide
  • The quantity (Becquerels) of radionuclide which will give a defined exposure rate (mSv.hr-1) for typical handling situations
  • Annual limits on intake values for inhalation, ingestion and skin exposure.
  • The quantities (Becquerels) of radionuclide which would lead to the area being designated as "Supervised" or as "Controlled".


  Name Last Editor Last Updated Keywords
Calcium 45 Claire Beament 12/10/11
Carbon 14 Claire Beament 12/10/11
Chromium 51 Claire Beament 12/10/11
Cobalt 57 Claire Beament 12/10/11
Iodine 125 Claire Beament 12/10/11
Iron 55 Claire Beament 12/10/11
Manganese 54 Claire Beament 12/10/11
Phosphorus 32 Claire Beament 12/10/11
Phosphorus 33 Claire Beament 12/10/11
Sodium 22 Claire Beament 12/10/11
Sodium 24 Claire Beament 12/10/11
Sulphur 35 Claire Beament 12/10/11
Technicium 99 Claire Beament 12/10/11
Tritium Claire Beament 12/10/11