DECONTAMINATION OF A HOMOGENEOUS REACTOR
A satisfactory method of decontaminating a homogeneous reactor was developed using a CrSO/sub 4/-H/sub 2/SO/sub 4/ solution to dissolve and remove the oxide corrosion film deposited on stainless steel from UO/sub 2/SO/sub 4/ solutions at 300 deg C. Investigations show that Pu and fission products are incorporated in the oxide film and that descaling of the corrosion film is necessary for adequate decontamination. The 0.40 M CrSO/sub 4/-0.5 M H/sub 2/SO/ sub 4/ solution gave excellent film removal by modifying and dissolving the oxides, together with excellent decontamination from Pu and fission products in 2 to 4 hrs at 80 to 90 deg C. The decontamination is a result of dissolution of the oxide film, so that the contaminants go into solution and are removed in the spent CrSO/sub 4/ solution. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- NSA Number:
- NSA-12-000540
- OSTI ID:
- 4353594
- Report Number(s):
- CF-57-9-59
- Country of Publication:
- United States
- Language:
- English
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