The use of process information for verification of inventory in solvent extraction contactors in near-real-time accounting for reprocessing plants
Near-real-time accounting is being studied as a technique for improving the timeliness of accounting in nuclear fuel reprocessing plants. A major criticism of near-real-time accounting is perceived disclosure of proprietary data for IAEA verification, particularly in verifying the inventory of solvent extraction contactors. This study indicates that the contribution of uncertainties in estimating the inventory of pulsed columns or mixer settlers may be insignificant compared to uncertainties in measured throughput and measurable inventory for most reprocessing plants, and verification may not be a serious problem. Verification can become a problem for plants with low throughput and low inventory in tanks if contactor inventory variations or uncertainties are greater than /approximately/25%. Each plant must be evaluated with respect to its specific inventory and throughput characteristics. 11 refs., 4 figs.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7150708
- Report Number(s):
- LA-UR-88-1991; CONF-880631-45; ON: DE88014435
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Inspection
& Accountability-- Technical Aspects
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
ACCOUNTING
EFFICIENCY
ENERGY SOURCES
EXTRACTION
FUEL REPROCESSING PLANTS
FUELS
INVENTORIES
MANAGEMENT
MATERIALS
NUCLEAR FACILITIES
NUCLEAR FUELS
NUCLEAR MATERIALS MANAGEMENT
REACTOR MATERIALS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPENT FUELS
VERIFICATION