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U.S. Department of Energy
Office of Scientific and Technical Information

Method of monitoring subcritical reactivity during core refueling

Technical Report ·
OSTI ID:6734159
The Modified Source Multiplication (MSM) technique, was used to measure core subcritical reactivity and core component reactivity worth during a major refueling of the Fast Flux Test Facility (FFTF) core. Measured results were compared with calculated values as a means of verifying core component changouts during the refueling. The results demonstrate the accuracy expected from MSM measurements and show that the technique was very effective in monitoring core subcritical reactivity during a refueling in which the neutron sources changed significantly and were not uniformly distributed.
Research Organization:
Hanford Engineering Development Lab., Richland, WA (USA)
DOE Contract Number:
AC06-76FF02170
OSTI ID:
6734159
Report Number(s):
HEDL-SA-2612-FP; ON: DE83000485
Country of Publication:
United States
Language:
English