An employee experiences an accidental radiation exposure exceeding allowable limits. Which sequence of steps is appropriate?

• A. Continue exposure; recalibrate dosimeter.
• B. Stop exposure; notify supervisor; document; wait for medical.
• C. Immediately leave area and do nothing.
• D. Stop exposure; assess dosimetry; seek medical assessment; report to RSO; document event; initiate investigation.

Answer: (D)

When an accidental exposure surpasses allowable limits, protecting health and starting formal incident handling is the priority. Stop the exposure immediately to prevent any further dose. Then use the dosimeter readings to assess precisely how much radiation was received; knowing the actual dose is essential for medical decisions and for meeting regulatory reporting requirements. Seek medical assessment promptly to evaluate any potential acute effects or internal contamination, as appropriate.

At the same time, report the incident to the Radiation Safety Officer so the event is officially recorded, reviewed, and escalated within the radiation protection program. Document the incident so there is a complete record for compliance and future reference. Initiate a formal safety investigation to identify how the exposure occurred and to implement corrective actions that reduce the risk of recurrence.

Continuing exposure or doing nothing would worsen safety and health risks, while delaying dosimetry review or reporting can hinder medical care and proper program response.