Cesium determination for the DWPF off-gas system performance test

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In an effort to determine the cesium decontamination factors (DF`s) of the Defense Waste Processing Facility (DWPF) melter off-gas system at the Savannah River Site, the system was verified during an off-gas performance test. The off-gas performance test occurred during the DWPF waste Qualification Campaigns, WP-16 and WP-17. The verification of the off-gas system, which eliminated the need for a startup test involving a radioactive cesium addition, was based on the analysis of nonradioactive cesium across the first and second stage High Efficiency Particulate Air (HEPA) filters. The amount of cesium on the first and second stage HEPA filters was ... continued below

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5 p.

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Andrews, M.K.; Elder, H.H. & Boyce, W.T. April 11, 1996.

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In an effort to determine the cesium decontamination factors (DF`s) of the Defense Waste Processing Facility (DWPF) melter off-gas system at the Savannah River Site, the system was verified during an off-gas performance test. The off-gas performance test occurred during the DWPF waste Qualification Campaigns, WP-16 and WP-17. The verification of the off-gas system, which eliminated the need for a startup test involving a radioactive cesium addition, was based on the analysis of nonradioactive cesium across the first and second stage High Efficiency Particulate Air (HEPA) filters. The amount of cesium on the first and second stage HEPA filters was determined by leaching samples from each HEPA filter with nitric acid and analyzing the leachate using Inductively Coupled Plasma - Mass Spectrometry (ICP-MS). The ICP-MS method has been demonstrated to be sufficiently sensitive to measure small quantities of cesium on filters. Based on the cesium results of the HEPA filter, cesium DF`s were calculated. The DF`s indicated that the DWPF HEPA filters performed better than the design basis. In addition to the HEPA filters, a determination of the cesium concentration in the melter feed, the canister glass and the off-gas condensate was made. These analyses provided information on cesium flow through the DWPF. This paper will focus on the methods used in the determination of nonradioactive cesium and the calculation of the DF`s for the DWPF melter off-gas system.

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5 p.

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OSTI as DE96060055

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  • SPECTRUM `96: international conference on nuclear and hazardous waste management, Seattle, WA (United States), 18-23 Aug 1996

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  • Other: DE96060055
  • Report No.: WSRC-MS--96-0243
  • Report No.: CONF-960804--45
  • Grant Number: AC09-89SR18035
  • Office of Scientific & Technical Information Report Number: 258093
  • Archival Resource Key: ark:/67531/metadc669989

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  • April 11, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 9, 2016, 7:44 p.m.

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Andrews, M.K.; Elder, H.H. & Boyce, W.T. Cesium determination for the DWPF off-gas system performance test, article, April 11, 1996; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc669989/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.