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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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No impact from Savannah River radioactive wasps
The news is abuzz with recent news stories about four radioactive wasp nests found at the Department of Energy’s Savannah River Site in South Carolina. The site has been undergoing cleanup operations since the 1990s related to the production of plutonium and tritium for defense purposes during the Cold War. Cleanup activities are expected to continue into the 2060s.
Yoshiko Harima, Hideo Hirayama, Toshio Ishikawa, Yukio Sakamoto, Shun-ich Tanaka
Nuclear Science and Engineering | Volume 96 | Number 3 | July 1987 | Pages 241-252
Technical Note | doi.org/10.13182/NSE87-A16385
Articles are hosted by Taylor and Francis Online.
Exposure and absorbed dose buildup factors for a photon point source in infinite beryllium have been calculated in the low-energy range of 0.03 to 0.3 MeV, for penetration depths up to 40 mfp, using two discrete ordinates codes, PALLAS-PL,SP-Br and ANISN. Comparisons of both result to values obtained by point Monte Carlo calculations using the electron gamma shower version 4 code showed reasonable agreement for two types of sources: normally incident and point isotropic sources. The fitting parameters of a geometric-progression method formula were determined for the resulting buildup factor data. These fitting parameters are in good agreement with the basic data within 5% over a great variation in magnitude.