Time series analysis of reactor thermocouple data. [LMFBR]
Time-series analysis techniques are applied to nuclear reactor thermocouple data to investigate coolant temperatures measured within the fueled test assembly. The coolant temperature distribution within a fuel assembly affects the length of time a fuel assembly may be operated in a power reactor and, therefore, is an important economic consideration in the design of reactor fuel systems. Frequency-domain signal conditioning techniques were used to reveal the smoothly varying thermocouple signals from the noisy digital data. Examination of the cross-correlation function for thermocouple pairs suggested an alternate surging and ebbing of coolant flow within certain zones of the fuel assembly. These zones corresponded to thermocouples which experienced higher or lower than predicted coolant temperatures. This time series analysis contributed greatly toward the understanding of fuel assembly thermal hydraulics.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (USA)
- DOE Contract Number:
- AC14-76FF02170
- OSTI ID:
- 5136568
- Report Number(s):
- HEDL-SA-2100-FP; CONF-800820-10
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
210500* -- Power Reactors
Breeding
BREEDER REACTORS
BURNUP
DATA
DATA COMPILATION
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FUEL ASSEMBLIES
FUEL MANAGEMENT
INFORMATION
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MEASURING INSTRUMENTS
NUMERICAL DATA
OPERATION
PERFORMANCE
REACTOR OPERATION
REACTORS
TEMPERATURE DISTRIBUTION
THERMOCOUPLES