Document Details

Thorox Pilot Plant: Short-Decay Processing Run Summary, Runs SD-1, 2 and 3
Subject Terms:
Thorex Pilot plant, exposure; radiation, radio-iodine; short-decay, ruthenium; solvent, decontamination; uranium, thorium, ORNL
Document Location:
DOE INFORMATION CENTER 1 Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email:
Document Categories:
Health, Safety and Environment\Waste Management; Specific Material\Uranium
Document Type:
Publication Date:
1958 Jun 30
Declassification Date:
1993 Oct 18
Declassification Status:
Document Pages:
Accession Number:
Document Number(s):
CF-58-6-1; 58-6-1; 5861
Originating Research Org.:
Oak Ridge National Laboratory
OpenNet Entry Date:
1998 Jun 16
This report contains information concerning the Thorox Pilot Plant: Short-Decay Processing Run Summary, Runs SD-1, 2 and 3. Results are summarized for three runs processing 3000 to 4000 g/t, 32 to 65-day decayed thorium according to the ORNL Thorex Co-decontamination Flowsheet. Gross decontamination factors of 2 x 10(4) and 3.8 x 10(7), respectively, were demonstrated for thorium and uranium. Average solvent extraction losses totaled 3.2 and 0.14 percent, respectively, excluding uranium first cycle extraction losses which will be recovered upon processing the raffinate following Pa-233 decay. New methods for increasing radio-iodine and ruthenium decontamination were tested with good success for iodine and partial success for ruthenium. Thorium product, exceeding ruthenium specifications by a factor of 60, was recovered; the uranium product exceeded ruthenium specifications by a factor of 1.5. Radiation damage to the solvent became serious at 9.4 watt-hr of cumulative exposure. Tables and figures are included in this report.

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