Technical bases DWPF Late Washing Facility
A task force recommended that the technical feasibility of a Late Wash' facility be assessed [1]. In this facility, each batch of tetraphenylborate slurry from Tank 49 would be given a final wash to reduce the concentrations of nitrite and radiolysis products to acceptable levels. Laboratory-scale studies have demonstrated that d the nitrite content of the slurry fed to DWPF is reduced to 0.01 M or less (and at least a 4X reduction in concentration of the soluble species is attained), (1) the need for HAN during hydrolysis is eliminated (eliminating the production of ammonium ion during hydrolysis), (2) hydrolysis may be done with a catalyst concentration that will not exceed the copper solubility in glass and (3) the non-polar organic production during hydrolysis is significantly reduced. The first phase of an aggressive research and development program has been completed and all test results obtained to date support the technical feasibility of Late Washing. Paralleling this research and development effort is an aggressive design study directed by DWPF to scope and cost retrofitting the Auxiliary Pump Pit (APP) to enable performing a final wash of each batch of precipitate slurry before R is transferred into the DWPF Soft Processing Cell (SPC). An initial technical bases for the Late Wash Facility was transmitted to DWPF on June 15, 1992. Research and development activities are continuing directed principally at optimization of the cross-f low fitter decontamination methodology and pilot-scale validation of the recommended benzene stripping metodology.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 6668989
- Report Number(s):
- WSRC-RP-92-793-Rev.1; ON: DE93006888
- Country of Publication:
- United States
- Language:
- English
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RADIOACTIVE WASTE PROCESSING
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QUANTITATIVE CHEMICAL ANALYSIS
COMPILED DATA
CORROSION
DIAGRAMS
HYDROLYSIS
PRECIPITATION
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTES
RADIOLYSIS
SAMPLING
WASTE PROCESSING PLANTS
CHEMICAL ANALYSIS
CHEMICAL RADIATION EFFECTS
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DATA
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INDUSTRIAL PLANTS
INFORMATION
LYSIS
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NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
NUMERICAL DATA
PROCESSING
RADIATION EFFECTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
SEPARATION PROCESSES
SOLVOLYSIS
SUSPENSIONS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WASTE MANAGEMENT
WASTE PROCESSING
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052001* - Nuclear Fuels- Waste Processing