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U.S. Department of Energy
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Dilute chemical decontamination program. Semi-annual report (quarters 6 and 7), January 1-June 30, 1979

Technical Report ·
OSTI ID:6405043

An analytical procedure for determining oxalate and citrate in a solution was developed. The gamma dose rates from fuel bundles were determined at several locations. The radiolytic decomposition rates of oxalic and citric acids in solution were measured. Resins were evaluated for the regeneration of solutions of oxalic and citric acids containing Fe(III) and Co(II). Tests indicated the optimum condition for the preloaded anion-exchange resin was for the resin to be in equilibrium with the desired decontamination solution. The option of adding a small amount of cation-exchange resin to the preloaded anion-exchange resin to remove the divalent cations including Co-60 is feasible. Three VNC Test Loop Runs (3, 4 and 5) were completed using solutions of oxalic and citric acids and the preloaded anion-exchange regeneration process. Based on Runs 3 and 4, solvent and operation specifications were modified. The oxalate concentration was incrased from 0.01 to 0.012 M and the dissolved oxygen concentration was established at 0.75 +- 0.25 ppM. In Run 5, more than 85% of the Co-60 was removed from the Nine Mile Point pipe specimen in 12 hours using the new specifications.

Research Organization:
General Electric Co., San Jose, CA (USA). Nuclear Engineering Div.
DOE Contract Number:
AC02-76ET34203
OSTI ID:
6405043
Report Number(s):
DOE/ET/34203-42; ON: DE81025691
Country of Publication:
United States
Language:
English

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