Measurements of radionuclides in Pond C with an underwater HPGe detector [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 20 pages : digital, PDF file
Additional Creators:: Westinghouse Savannah River Company, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

This study on Pond C is part of a broader effort to appraise Savannah River Site (SRS) waterways impacted by the Par Pond Dam remediation program that commenced 1991. In addition, the results were sought to provide a more complete appraisal of the status of historical radioactive releases that remain in the Lower Three Runs system. Gamma emitting radionuclide concentrations in Pond C sediment were measured with an underwater HPGe detector. The predominant radionuclide was Cs-137 and the only other radionuclide detected was Co-60, which was only 1% as intense as the Cs-137. At the time of the measurements (November 1992), the total Pond C inventory of ¹³⁷Cs was 4.5 ± 0.8 Ci of which 0.30 ± 0.09 Ci was exposed during a 6-ft drawdown for Par Pond Dam repairs. The Pond C inventory of Cs-137 is only 10% of that of Par Pond, primarily because of the much larger area of Par Pond. However, Pond C has a larger average sediment concentration of 8.1 μCi/m² compared to 4.5 μCi/m² for Par Pond, which is consistent with Pond C being closer to the origins of the earlier SRS reactor releases. The maximum Cs-137 concentration observed for Pond C was 55 μCi/m², which is about 10% higher than the maximum observed for Par Pond.

Report Numbers:

E 1.99:wsrc-tr--95-0272
wsrc-tr--95-0272

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Note:

Published through SciTech Connect.
08/01/1995.
"wsrc-tr--95-0272"
"DE96001653"
Winn, W.G.

Funding Information:

AC09-89SR18035

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