Radiation Safety Dosimetry Program

The Columbia University dosimetry program provides radiation monitoring services for various radiation workers and x-ray users within Columbia University Morningside Campus, Columbia University Medical Center Campus, New York State Psychiatric Institute, New York Presbyterian Hospital, College of Dental Medicine and the Lasker Building. Our goal is to maintain all workers’ radiation exposures As Low As Reasonably Achievable (ALARA). Some of the services the dosimetry program provides include: scheduled trainings, in-service refresher trainings, monitoring during pregnancy, and access to exposure histories. Please view our links listed below. 

Example image of the personal dosimeter badge.

In order to maintain our goal, we request that all dosimetry program participants wear their badges as instructed and return their dosimeters within 15 business days of the end of each wear period (this date is printed on the face of all dosimeters).

Return all dosimetry badges to:
Radiation Safety – CUMC 630 West 168 Street, EH&S, Mail Code: 70, New York, NY 10032

Dosimetry Badge Instructions

  • Attend radiation safety training prior to requesting a badge. Please view our training schedule.
  • Complete the RASCAL post-test online. Initial training must be completed before you receive your badge and refresher training must be completed annually afterwards.
    • Non-Human Use (animal care, researchers, irradiation, etc.): Complete RASCAL course TC0070.
    • Human-Use (NYSPI, NYPH workers, etc.): In lieu of completing the online test, you may arrange annual refresher trainings for your staff with the Radiation Safety Office by emailing badges@columbia.edu. Otherwise, you must complete RASCAL course TC0070.
  • Pick-up new dosimetry badges ONLY after attending the radiation safety training and completing the RASCAL post-test online.
  • Return all dosimetry badges on a timely basis. In order to properly monitor occupational exposure as well as prevent late charges, badges must be returned within 22 calendar days after the end of the wear period. Note: Wear end dates are printed on all badges below your name.
  • Report all lost badges to the Radiation Safety Office by providing the Employee Changes & Cancellations form.
  • Always indicate deletions on the packing list that is enclosed with the badges.
  • Inform Radiation Safety when there are any badge coordinator changes.
  • Keep all radiation safety badge exposure reports sorted in a binder for regulatory audits.
  • If you are pregnant or planning to get pregnant, you are encouraged to declare your pregnancy to the Radiation Safety Office. Declaration of pregnancy is voluntary and will be kept confidential. To schedule an appointment, please contact the Radiation Safety Office at (212) 305-5359.
  • Do not share dosimetry badges.
  • Do not discard any dosimetry badges.
  • Do not use your dosimetry badge at another institution and do not wear a badge from elsewhere while at Columbia University.
  • Do not tamper with dosimetry badges.
  • Do not mail dosimetry badges directly to the badge company; all badges are to be returned to the Radiation Safety Office.
  • Do not make any change requests to the badge company; all changes must be communicated directly to the Radiation Safety Office.
  • Do not return used badges enclosed in the original clear wrap package, used badges should be out of package. If badges are unused they should remain in their original clear wrap package.
  • Do not return your badge holder.  If a badge holder is lost, you may request a new one by contacting the Radiation Safety Office.
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Additional Links