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1426034 
Technical Report 
U-235 Holdup Measurements in the 321-M Lathe HEPA Banks 
Salaymeh, SR 
2002 
NTIS/02938096_a 
GRA and I 
GRA and I 
The Analytical Development Section of Savannah River Technology Center (SRTC) was requested by the Facilities Decommissioning Division (FDD) to determine the holdup of enriched uranium in the 321-M facility as part of an overall deactivation project of the facility. The results of the holdup assays are essential for determining compliance with the Waste Acceptance Criteria, Material Control and Accountability, and to meet criticality safety controls. This report covers holdup measurements of uranium residue in six high efficiency particulate air (HEPA) filter banks of the A-lathe and B-lathe exhaust systems of the 321-M facility. This report discusses the non-destructive assay measurements, assumptions, calculations, and results of the uranium holdup in these six items. 
Uranium 235; *Holdup; HEPA filters; Measurements; Assaying; Deactivation; Compliance; Radioactive waste management 
IRIS
• Uranium
     Toxline
     Merged reference set
     Secondary Refinement
          Retained for manual screening
     Excluded:
          Not chemical specific
     Uranium Literature Search Update 3/2017
          Toxnet