Radioactive Materials - Monthly Surveys

What survey methods are approved for the monthly survey?

The method depends on what radionuclide(s) your approval is approved to possess and use:

  • Approvals approved for low energy beta emitters (such as C-14, S-35 and H-3 ) must use a liquid scintillation counter.
  • Approvals approved for high energy beta emitters (such as P-32) can use a pancake probe Geiger counter.
  • Approvals approved for low energy gammas emitters (such as I-125 or Cr-51) can use a low energy gamma scintillation probe.
  • Wipes surveys with a liquid scintillation counter can substitute for portable instrument surveys.

What should be surveyed during a monthly survey?

  • All areas where radioactive material is used or stored
  • Commonly touched items, such as light switches, RAM storage area exterior surfaces, telephones, tools, equipment controls, door handles, or computer keyboards/mice
  • Commonly travelled floor areas such as entrances or exits and the floor near RAM use areas, waste storage locations and frequently used equipment