RFT-CAL-L MARK III Loop/Prototypic Fuel-Pin Calibration Experiment

摘要

The RFT-CAL-L TREAT experiment simultaneously tested three full length, fresh fuel pins in a MARK IIIA flowing sodium loop as part of the FFTF reference oxide fuel transient testing program. Two of the test pins were FFTF driver fuel pins and the third pin, RFT-CAL-1, was a fully enriched, special pin containing nine different fuel sections in which the fuel pellet inner and outer diameters and density were varied. The RFT-CAL-L experiment satisfied all major objectives by establishing the pin to reactor power coupling and axial power profile, producing cladding strain on the special fuel pin and providing fuel melting data. The code for the MARK III loop model was verified by matching thermocouple data. The fuel pin code gave good agreement between predicted and measured cladding strains. (ERA citation 07:053777)