Regulatory Considerations in Extremity Monitoring Programs
J. E. DeCicco
Extremity monitoring for radiation exposures can become complex for several reasons. Individuals are usually required to wear extremity monitoring because their extremities are expected to be closer to the source than the body and could likely exceed 10% of the dose limit. Whole body badging is usually assumed to be in a fairly uniform field because it is far enough away from the source of radiation. Geometry effects of monitoring positions will not only cause differences between the extremity and whole body monitoring readings, but will often create different exposure rates along the extremity. Regulatory requirements limit the dose to the area of the extremity receiving the highest exposure; the highest exposure location may not always be a convenient location to wear an extremity dosimeter. Recent events involving radioactive material have resulted in extremity doses exceeding Nuclear Regulatory Commission shallow dose equivalent limits. Although the incidents are similar, different issues emerged from these incidents that may be pertinent to most locales that monitor extremity dose.
This abstract was presented at the 34th Annual Midyear Meeting, "Radiation Safety and ALARA Considerations for the 21st Century", Regulatory Considerations Session, 2/4/2001 - 2/7/2001, held in Anaheim, CA.