Potential radionuclide emissions from stacks on the Hanford site, Part 2 [electronic resource] : Dose assessment methodology using portable low-resolution gamma spectroscopy

Published:: Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1995.
Physical Description:: pages 269-278 : digital, PDF file
Additional Creators:: U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

In September 1992, the Westinghouse Hanford Company began developing an in situ measurement method to assess gamma radiation emanating from high-efficiency particulate air filters using portable low-resolution gamma spectroscopy. The purpose of the new method was to assess radioactive exhaust stack air emissions from empirical data rather than from theoretical models and to determine the potential unabated dose to an offsite theoretical maximally exposed individual. In accordance with Title 40, Code of Federal Regulations, Part 61, Subpart H, {open_quotes}National Emission Standards for Hazardous Air Pollutants{close_quotes}, stacks that have the potential to emit ≥ 1 μSv y{sup −1} (0.1 mrem y{sup −1}) to the maximally exposed individual are considered {open_quotes}major{close_quotes} and must meet the continuous monitoring requirements. After the method was tested and verified, the U.S. Environmental Protection Agency, Region 10, approved its use in June 1993. Of the 125 stacks operated by the Westinghouse Hanford Company, 22 were targeted for evaluation by this method, and 15 were assessed. (The method could not be applied at seven stacks because of excessive background radiation or because no gamma emitting particles appear in the emission stream.) The most significant result from this study was the redesignation of the T Plant main stack. The stack was assessed as being {open_quotes}minor{close_quotes}, and it now only requires periodic confirmatory measurements and meets federally imposed sampling requirements.

Report Numbers:

E 1.99:nureg/cp--0141
E 1.99: conf-940738--
conf-940738--
nureg/cp--0141

Subject(s):

Nuclear Reactor Technology

Note:

Published through SciTech Connect.
02/01/1995.
"nureg/cp--0141"
" conf-940738--"
"TI95007828"
23. DOE/NRC nuclear air cleaning and treatment conference, Buffalo, NY (United States), 25-28 Jul 1994.
Barnett, J.M. [Westinghouse Hanford Company, Richland, WA (United States)].
USDOE Assistant Secretary for Environment, Safety, and Health, Washington, DC (United States). Office of Environmental Guidance

Funding Information:

AC06-87RL10930

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