Characterization Results for the September 2023 Tank Farm 3H Evaporator Overhead Sample

Technical Report · Tue Feb 06 04:00:00 EST 2024

DOI:https://doi.org/10.2172/2319026· OSTI ID:2319026

Peck, Elizabeth J. ^[1]

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1. Savannah River National Laboratory (SRNL), Aiken, SC (United States)

On an annual basis, Savannah River Mission Completion (SRMC) provides 2H and 3H evaporator overhead samples to Savannah River National Lab (SRNL) to be analyzed per Section 5.2 of the Effluent Treatment Project (ETP) Waste Compliance Plan (WCP) and the Waste Acceptance Criteria (WAC). This report presents the average characterization results for the September 2023 3H evaporator overhead sample. The sample was clear and colorless with no visible solids. The results provide measurements for cesium-137 (¹³⁷Cs), strontium-90 (⁹⁰Sr), and iodine-129 (¹²⁹I) with the radionuclide concentration limits specified by the WAC. These analyses were performed in duplicate, and all three measured radionuclide concentrations were within ETP WAC limits. A summary of the analytical results for this 3H evaporator overhead sample includes the following: The measured cesium-137 activity in the 3H evaporator overhead sample averaged 5.70E+01 dpm/mL, which is below the ETP WAC limit of 1.30E+03 dpm/mL. As seen through historical results, Cs-137 continues to present a decreasing activity since 2020. The strontium-90 activity in the 3H evaporator overhead sample averaged <2.16E00 dpm/mL, which is below the ETP WAC limit of 1.76E+02 dpm/mL. The iodine-129 activity in the 3H evaporator overhead sample averaged <9.08E-02 dpm/mL, which is below the ETP WAC limit of 1.00E+00 dpm/mL

• Research Organization: Savannah River National Laboratory (SRNL), Aiken, SC (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM), Safety, Security, and Quality Assurance
• DOE Contract Number: 89303321CEM000080
• OSTI ID: 2319026
• Report Number(s): SRNL--STI-2023-00636
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
Cesium-137
Iodine-129
Strontium-90
Waste-Acceptance Criteria (WAC)