Gamma Exposure from Rn Progeny in GAC Units

by Jerry Lowry, Univ of Maine, United States,
Donald Hoxie, Univ of Maine, United States,
Eugene Moreau, Univ of Maine, United States,

Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract: An investigation into the gamma exposure rate generated by granular activated carbon (GAC) water treatment units focused on ten sites that covered a range of source radon (Rn) in water from 2,000 pCi/L to over 1,000,000 pCi/L. Extensive data on the gamma exposure rates surrounding these installations were collected and analyzed to generate general relationships for exposure prediction to the occupants of the home, and to mitigators installing and servicing units. Shielding and disposal aspects associated with these GAC units are presented and discussed.

Subject Headings: Water treatment | Gamma function | Site investigation | Granular materials | Activated carbon | Radon | Data analysis | Data collection

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