Nine workers at the Hanford Plutonium Finishing Plant are being checked as a precaution to determine whether they may have breathed in radioactive material.
Last week, radiation release alarms sounded as workers were completing the removal of contaminated material from within a glovebox. No contamination was found on the skin or personal clothing of those workers, who were using respirators.
However, nasal smears indicated radioactive material might have been breathed in by some of the workers who helped the glovebox workers remove the protective clothing worn over their personal clothing after the alarm sounded, according to CH2M Hill Plateau Remediation Co.
The four workers who were at the glovebox and the five workers who helped them remove their protective clothing will have further tests. Results should be available within two weeks.