Characterization of Rocky Flats Environmental Technology Site through Paint Sampling and Rapid Gamma Spectroscopy Scope: • The work was performed at Rocky Flats Environmental Technology Site (RFETS) in USA. • The goal was to distinguish between naturally occurring radionuclides and transuranics / uranium which had originated from the site operations. • A CANBERRATM team developed a technique for characterizing paint chippings, using in-situ gamma spectroscopy as part of an on-site mobile laboratory. Key Drivers: • Meet the criteria for unrestricted release under the Multi-Agency Radiological Site Survey Investigations Manual (MARSSIM). • Develop a rapid and cost- beneficial approach to perform the paint sampling analysis. • Unrestricted release criteria are r

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