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NRC "constraint" rule
Greetings RadSafe:
Since I haven't seen any traffic regarding Draft Reg. Guide DG-8016,
"Constraints for air effluents for licensees other than power reactors," I
thought I'd fire the first shot. I just received the Guide and the comment
period ends 3/12/96.
Basically, the proposal is to establish a "constraint" at 10 mrem/y TEDE
from air emissions. If you exceed the constraint: the licensee shall
report the exceedence and promptly take corrective action to ensure against
recurrence. They state that a limit (100 mrem/y) is an upper bound and a
constraint is a level above which a specified action is required.
Additionally, enforcement action will only take place if a licensee fails
to report an exceedence or fails to take appropriate and timely corrective
action.
So far not so bad; however, their example exceedence report is for the
exposure of a member of the public in a hallway outside of a lab using
I-131! When did this become an air emission scenario? (my dictionary says:
"emission ... (3) substances discharged into the air (as by a smokestack ...
)") I would poke a few holes in the calculation provided in the example;
however, I'll leave some fun for the rest of you.
Would the same reporting be required if a member of the public received 10.1
mrem TEDE in a year from the transmission of Co-60 photons through a shield
wall? Remember, the example calculation involved a "perceived" exposure.
Requests for copies can be made to: USNRC, Washington, DC, 20555, Attn:
Office of Admin, Distribution and Mail Services Section. I'm sure by the
time you read this Sandy Perle will have posted the Reg. Guide on RadSafe!
glenn_sturchio@merck.com
Of course these comments are mine and should have no reflection on my fine
employer. And as Kent Lambert states: if my comments are wrong, I hit send
by accident.