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Re: US radiation safety limits not based on science-GAO
The NRC's 100 mrem annual limit (above background) is the dose limit for an individual member of the public from licensed operations [10 CFR 20.1301(a)(1)]
A licensee is allowed to operate up to a 500 mrem per year limit for a member of the public with prior NRC authorization upon demonstrating the need for and the duration to operate in excess of the 100 mrem limit [10 CFR 20.1301(c)]
The NRC's 25 mrem annual limit (above background) is in reference to the license termination rule [10 CFR 20. 1402]. A site will be considered acceptable for unrestricted use if the dose from residual radioactivitiy to the average member of the critical group does not exceed 25 mrem per year.
Duncan White
adw@nrc.gov
>>> dave@uic.edu 07/17 10:41 AM >>>
Aren't the NRC limits for the public 100 mrem per for most of the
population and 500 mrem per year to a small fraction of the
population? Where did the 25 mrem limit come from? Where in the regs is
the EPA limit of 15 mrem found?
Dave Derenzo
At 09:43 PM 07/14/2000 -0500, you wrote:
>US radiation safety limits not based on science-GAO
>
>WASHINGTON, July 14 (Reuters) - A disagreement between
>federal agencies over what level of radiation exposure is safe for
>
>The Nuclear Regulatory Commission (NRC), which oversees the
>nation's nuclear power plants, says exposure should not exceed 25
>millirem per year, while the Environmental Protection Agency
>(EPA) has set a standard of 15 millirem, with ground water levels
>not to exceed 4 millirem.
Dave Derenzo, RSO (dave@uic.edu)
UIC Radiation Safety Section, M/C 932
Phones: Voice (312) 996-1177 Fax: (312) 996-8776
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