LOFT Cladding Surface Thermocouple Calibration Test Results for Stainless Steel Clad Rod RRF-A-88107

摘要

LOFT thermocouple response data are presented for the stainless steel clad electrical heater rod RRF-A-88107. Tests were conducted in the LOFT Test Support Facility and were intended to simulate coolant and cladding temperature conditions expected during the LOFT loss-of-coolant experiments. Comparisons are made with previously obtained stainless steel and Zircaloy clad heater rod data. Differences in thermocouple behavior between previously tested stainless steel and Zircaloy clad heater rods are discussed. It is recommended that the stainless steel clad heater rod test data not be used to correct or characterize the measurement of the cladding surface temperature of a nuclear fuel rod by the LOFT surface thermocouple. (ERA citation 04:030170)