Action Levels for OSU
In addition to maintaining radiation dose below the limits set forth by regulatory dose limits, work with sources of ionizing radiation shall be planned and conducted to keep doses as low as reasonably achievable (ALARA).
The table below outlines the action levels for OSU’s ALARA program:
Monitoring Type |
Action Level |
Action |
Shallow Dose Equivalent (badge, rings) |
>0 mrem |
individual/PD notification non-ADRI |
“ |
≥ 500 mrem cumulative (annual) |
ADRI |
Deep Dose Equivalent (badge) |
>0 mrem |
individual/PD notification non-ADRI |
“ |
≥50 mrem |
ADRI |
Thyroid |
All thyroid scans |
individual/PD notification non-ADRI |
“ |
50 mrem CDE |
ADRI |
Unrestricted Area |
50 mrem cumulative |
ADRI |
” |
100 mrem cumulative |
Modify facility and/or procedure |
ADRI = Abnormal Dosimeter Reading Investigation. This is an investigation conducted by Radiation Safety to attempt to reduce exposure to zero if possible.