The University of Washington makes efforts to ensure that radiation doses to
personnel are maintained As Low As Reasonably Achievable (ALARA). Personnel
dosimetry records are reviewed monthly or quarterly by a Health Physicist, and
are compared with the ALARA trigger level, which is set to 10% of the regulatory
limit for whole body exposures.
Exposures in excess of 1% of the regulatory limits for Dental X-ray Workers
are investigated since most of them receive little or no exposure.
If an employee's dosimetry results have a reading in excess of a trigger
level, an investigation is performed to identify the circumstances surrounding
the reading. An ALARA investigation will typically include: review of the
employee's past dose history and work habits; any potential exposure from other
sources (e.g., employee had a chest x-ray and forgot to remove dosimeter) and
when deemed appropriate, refresher radiation safety training and recommendations
on how to modify procedures to reduce radiation doses.
No dental worker has exceeded an ALARA Investigation Level at the University
More information can be found in the University of Washington Radiation
Safety Manual ALARA Program