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Title: Analysis of H-Canyon 6.4D Dissolver Solid

Technical Report ·
DOI:https://doi.org/10.2172/1596920· OSTI ID:1596920
 [1];  [1];  [1];  [1]
  1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

During reconfiguration of the 6.4D dissolver for the dissolution of High Flux Isotope Reactor (HFIR) fuel, solid material was observed on the bottom of the dissolver pot. Samples of the solids were taken from the north and south side of the 6.4D pot and were transported to the Savannah River National Laboratory (SRNL) for characterization. The samples were initially dried, and then a small portion of each sample set was removed, and rinsed with either 1 M HNO3 or 6 M HNO3. A portion of each unrinsed and rinsed sample was dissolved and analyzed for elemental and radiochemical concentrations. Results from the analyses indicated that the solids were primarily Si, Fe, Al, and Cr. The U content in the initial dried, unrinsed solids was 0.380 wt %, but was reduced to 0.057 wt % in the rinsed solids, indicating the majority of the U was mostly soluble in HNO3. Small amounts of Pu were measured at 0.010 wt % in both the rinsed and unrinsed solids.

Research Organization:
Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Sponsoring Organization:
USDOE Office of Environmental Management (EM)
DOE Contract Number:
AC09-08SR22470
OSTI ID:
1596920
Report Number(s):
SRNL-STI-2018-00404; TRN: US2102693
Country of Publication:
United States
Language:
English