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Measured and calculated isotopes for a gadolinia lead test assembly

Conference · · Transactions of the American Nuclear Society; (United States)
OSTI ID:7091048
The US Department of Energy, Duke Power Company, and the B and W Fuel Company participated in an extended burnup project to develop, irradiate, and examine an advanced fuel assembly design for pressurized water reactors. The assembly uses a urania-gadolinia (UO[sub 2]-Gd[sub 2]O[sub 3]) burnable absorber fuel mixture along with other fuel performance and design features that enhance uranium utilization. Previous milestones in the gadolinia development of the extended burnup project include development and verification of a neutronics model, measurement of materials properties of gadolinia fuel, and a successful gadolinia lead test assembly (LTA) program. One LTA was discharged as planned after one cycle, four LTAs continued for two more cycles, and one LTA of these four underwent a fourth cycle and reached 58,310 MWd/ton U assembly-average burnup, a world record at the time. Hot-cell destructive examination of gadolinia and non-gadolinia fuel rods from the single-cycle LTA (406.2 effective full-power days irradiation) has been completed. The comparison of measured and calculated isotopics for this LTA is the subject of this paper. A comparison of measured and calculated power distributions is also given, because accurate prediction of core performance during power production is ultimately the most important test of a calculational model.
OSTI ID:
7091048
Report Number(s):
CONF-901101--
Conference Information:
Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 62
Country of Publication:
United States
Language:
English

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Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
ACCURACY
ACTINIDE ISO
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BURNABLE POISONS
BURNUP
CALCULATION METHODS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COMPUTER CODES
DESIGN
ELECTRIC UTILITIES
ENRICHED URANIUM REACTORS
EVALUATION
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
F CODES
FUEL ASSEMBLIES
GADOLINIUM COMPOUNDS
GADOLINIUM OXIDES
HEAVY NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IRRADIATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTOPES
NATIONAL ORGANIZATIONS
NEUTRON ABSORBERS
NUCLEAR POISONS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PHYSICS
PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM 241
PLUTONIUM 242
PLUTONIUM ISOTOPES
POST-IRRADIATION EXAMINATION
POWER DENSITY
POWER REACTORS
PUBLIC UTILITIES
PWR TYPE REACTORS
RADIOISOTOPES
RARE EARTH COMPOUNDS
REACTIVITY
REACTOR MATERIALS
REACTOR PHYSICS
REACTORS
SPONTANEOUS FISSION RADIOISOTOPES
THERMAL REACTORS
THREE-DIMENSIONAL CALCULATIONS
URANIUM 235
URANIUM ISOTOPES
US DOE
US ORGANIZATIONS
VERIFICATION
WATER COOLED REACTORS
WATER MODERATED REACTORS
YEARS LIVING RADIOISOTOPES