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Radiation Safety


 

Radiation Monitoring Badge Program

When Radiation Monitoring Badges Are Required
Optional Monitoring
Using & Wearing Radiation Monitoring Badges
Viewing Your Most Recent Radiation Dose Report
How to Request or Cancel Monitoring Badge Service


When Radiation Monitoring Badges Are Required (top)

Under Princeton University requirements, you must wear radiation monitoring badges if:

  • You operate x-ray machines (including x-ray diffraction equipment and the Molecular Biology Department Faxitron cabinet x-ray system)
  • You are a Declared Pregnant Worker working in a lab where x-ray and gamma emitters or energetic beta emitters are used
  • If you use radioactive materials under the following conditions:
Open Sources
P-32 (and other beta emitters with energies > 250 keV) Used in amounts of 5 mCi or more for extended operations. Not required for simple aliquoting from a stock vial
I-125 and Cd-109 (and other x-ray or gamma emitters with energies < 100 keV) Used in amounts of 1 mCi or more for extended operations. Not required for simple aliquoting from a stock vial
Cr-51, Co-57, Fe-59 and Zn-65 (and other x-ray or gamma emitters with energies > 100 keV) Used in amounts of 0.5 mCi or more for extended operations. Not required for simple aliquoting from a stock vial

Sealed Sources

Co-60, Cs-137 and Ra-226 (and other energetic beta/gamma emitters) Used in amounts > 0.1 mCi


Examples of how the monitoring badge requirements are applied:

  • If your lab receives a 5 mCi vial of P-32 and you briefly handle the 5 mCi vial to withdraw an aliquot of 100 uCi, you are not required to wear monitoring badges.
  • If you order 5 mCi of P-32 and you perform a synthesis using the entire 5 mCi, you are required to wear monitoring badges.

Optional Monitoring (top)

If you work in a laboratory in which gamma emitters or energetic beta emitters are used, you may request radiation monitoring badge service, even if you do not meet the criteria for required monitoring.

Monitoring is not generally provided for persons working in laboratories in which only alpha emitters or low energy beta emitters (< 250 keV) are used, since our radiation monitoring badges cannot detect these radiations.


Using & Wearing Radiation Monitoring Badges (top)

For additional information regarding how the monitoring badges work and information about the radiation monitoring badge program, go to the Using & Wearing Radiation Monitoring Badges module.


How to Request or Cancel Monitoring Badge Service (top)

To request radiation-monitoring services, to cancel monitoring badges, or to request a replacement for a lost or damaged badge, you may contact EHS directly by completing the Radiation Monitoring Badge Service Request Form. You may also ask the PI in charge of your lab or lab manager to request monitoring services. Please provide EHS with the following information: name, department, name of the laboratory in which the primary radiation exposure occurs, purpose of request (i.e., new service, replacement for a lost/damaged badge, etc.), the source of radiation exposure (radioisotopes, x-ray machines, etc.), length of time for which monitoring service is needed, and the urgency of the request.

 

       
       
     

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