Expected near-field thermal performance for nuclear waste repositories at potential salt sites: Technical report
Thermal analyses were made for the environmental assessments of seven potential salt sites for a nuclear waste repository. These analyses predicted that potential repository sites in domal salts located in the Gulf Coast will experience higher temperature than those in bedded salts of Paradox and Palo Duro Basins, mainly because of higher ambient temperatures at depth. The TEMPV5 code, a semi-analytical heat transfer code for finite line sources, calculated temperatures for commercial high-level waste (CHLW) and spent fuel from pressurized-water reactors (SFPWR). Benchmarks with HEATING6, THAC-SIP-3D, STEALTH, and SPECTROM-41 showed that TEMPV5 agreed closely in the very near field around the waste package and approximately in the near-field and far-field regions of the repository. The analyses used site-specific thermal conductivities that were increased by 40% to compensate for reductions caused by testing technique, salt impurities, and other heterogeneities, and sampling disturbance. Analyses showed peak salt temperatures of 236/sup 0/C (CHLW) and 134/sup 0/C (SFPWR) for the bedded salt and 296/sup 0/C (CHLW) and 180/sup 0/C (SFPWR) for the domal salt. Analyses with uncorrected laboratory thermal conductivities would increase peak salt temperatures by about 120/sup 0/C for CHLW and about 60/sup 0/C for SFPWR. These temperature increases would increase the thermally induced flow of brine and accelerate corrosion of the waste package. 30 refs., 35 figs., 48 tabs.
- Research Organization:
- Battelle Memorial Inst., Columbus, OH (USA). Office of Nuclear Waste Isolation
- DOE Contract Number:
- AC02-83CH10140
- OSTI ID:
- 6250942
- Report Number(s):
- BMI/ONWI-652; ON: DE87013866
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
SALT DEPOSITS
THERMAL CONDUCTIVITY
TEMPERATURE MEASUREMENT
COMPARATIVE EVALUATIONS
LOUISIANA
MISSISSIPPI
RADIONUCLIDE MIGRATION
T CODES
TEXAS
COMPUTER CODES
ENVIRONMENTAL TRANSPORT
FEDERAL REGION IV
FEDERAL REGION VI
GEOLOGIC DEPOSITS
MANAGEMENT
MASS TRANSFER
MATERIALS
NORTH AMERICA
PHYSICAL PROPERTIES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
THERMODYNAMIC PROPERTIES
USA
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
510300 - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- (-1989)
520300 - Environment
Aquatic- Radioactive Materials Monitoring & Transport- (1989)