Bruce Power is conducting checks on 192 staff that could have been affected by a contamination incident in November last year. Chalk River Laboratory has so far carried out 39 large volume bioassays with the results that ten people have shown less than detectable activity (MDA); 20 have more than MDA but less than 10 mSv; six are between 10 and 20 mSv and three are between 20 and 30 mSv. None of these results has taken a worker beyond annual or five-year dose limits. An American lab will soon begin contributing to the work, following approval from the Canadian Nuclear Safety Commission, which expects the move "to double the rate of bioassay testing within a few weeks." Bruce Power is complementing the survey with 'extent-of-condition' tests for workers that may have previously encountered alpha contamination. Alpha contamination was present in corrosion products dislodged during grinding work.
Assessments continue at Bruce
Bruce Power is conducting checks on 192 staff that could have been affected by a contamination incident in November last year. Chalk River Laboratory has so far carried out 39 large volume bioassays with the results that ten people have shown less than detectable activity (MDA); 20 have more than MDA but less than 10 mSv; six are between 10 and 20 mSv and three are between 20 and 30 mSv. None of these results has taken a worker beyond annual or five-year dose limits. An American lab will soon begin contributing to the work, following approval from the Canadian Nuclear Safety Commission, which expects the move "to double the rate of bioassay testing within a few weeks." Bruce Power is complementing the survey with 'extent-of-condition' tests for workers that may have previously encountered alpha contamination. Alpha contamination was present in corrosion products dislodged during grinding work.
_51287.jpg)
