Hi All:
Pickering Nuclear in Ontario, Canada, would like to benchmark radioactive work
planning thresholds and associated controls. We currently designate
radioactive work with elevated radiological risk as either 'Medium Hazard' or
'High Hazard', based on factors including external dose rate (WB/Sk/Ext),
external dose, airborne tritium concentration, potential for wetting with
tritiated water, the application of destructive/abrasive energies, and some
specific activities (e.g. manipulation or proximity to irradiated components,
shielded flasks). For work so designated, we impose additional controls in
the planning, preparation and execution of the work.
Pickering would like to obtain the following information:
Do your plant procedures specify external dose rate or dose levels, or other
thresholds/parameters, above which additional controls are required in the
planning, preparation or execution of work?
If so, what are those levels/thresholds/parameters?
Do these levels align with your definitions for 'High Radiation Area', 'Locked
High Radiation Area' etc?
What additional controls are required for work that meet these
levels/designations, in either the planning, preparation for work or execution?
I appreciate any responses - thanks in advance,
Karen
Karen McDougall
Section Manager ALARA
Responsible Health Physicist
Radiation Protection
Pickering Nuclear
* 8+701+4351
(905) 839-1151 x 4351
* (905) 837-7395
* P05A032
* [email protected]
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