PRELIMINARY DAREX FLOWSHEET
The preliminary Darex flowsheet for a Yankee fuel provides a flo-step process for the total dissolution of stainless steel clad uranium fuels in a mixture of hydrochloric and nitric acids (aqua regia) andd the removal of exceds chloride from the dissolver solution by a batch polatiltion procedure. Four major pieces of equipment are indicateds a dissolver-evaporator, a down draft condensers a condensate receivers and a caustic scrubber. The first three pieces or equipment are exposed to aqua regia and must be constructed og a corrosion resistant material such as titanium. Metallic ls) as an activator to prevent passivation effects. Under these conditions, the dissolution of cladding proceeds smoothly. (auth)
- Research Organization:
- General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
- DOE Contract Number:
- W-31-109-ENG-52
- NSA Number:
- NSA-13-010980
- OSTI ID:
- 4254098
- Report Number(s):
- HW-58600
- Country of Publication:
- United States
- Language:
- English
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