External Monitoring
The following table summarizes the various types of radiation work performed under the University of Pittsburgh licenses. For each type of work, the type of monitoring (if any) is indicated.
For radioisotope users, dosimetry is required for the handling of material in quantities equal to or greater than the indicated activity. For example, a radiation worker handling 5 mCi or more of Cr-51 is required to wear both ring and whole body dosimeters; however, a worker handling less than 5 mCi is not required to wear dosimetry. It is also required that all workers who have been issued dosimetry wear it at all times when handling isotopes, regardless of the activity level.
| Type of Radiation Work | Activity level for Ring dosimeter |
Activity level for Whole Body Dosimeter |
|---|---|---|
| Radioisotopes (For isotopes not listed, contact RSO for guidance) | ||
| Photon Emitters | ||
| Group 1 - Na-22, Sc-46, Fe-59, Co-60, Sr-85, Nb-95 |
1 mCi | 5 mCi |
| Group 2 - Cr-51, Co-57, I-125, I-131, Ce-141, In-111 |
5 mCi | 5 mCi |
| Beta Emitters | ||
| Emax < 500 Kev H-3, C-14, S-35, Ca-45, Ni-63, P-33 |
Not required | Not required |
| Emax > 500 Kev P-32, Cl-36 |
1 mCi |
5 mCi |
| Sealed sources or gamma irradiators |
Not required |
Not required |
| Analytical X-Ray equipment | Yes | As Required by RSO |
| Clinical or research X-Ray equipment | As Required by RSO | Yes |
| Particle accelerator | As Required by RSO | Yes |