The Calibration of the Fuel Central Temperature System in Fuel Test Loop

The 3-Pin Fuel Test Loop (FTL) which is essential for developing new nuclear fuel and high performance nuclear fuel was installed to meet the increasing demand for irradiation tests at HANARO in 2007. Also, it was installed to conduct in-core fuel performance tests in operating conditions and has performed operations conforming to the functional and performance requirements of the system. A commissioning test for normal operation, including on-power experiments with the test fuel loaded in the FTL, was successfully accomplished in September, 2009. The centerline temperature resulting from the irradiation properties of the nuclear fuel is an important factor for evaluating nuclear fuel properties in pile, and instrumentation and measurement techniques for nuclear fuel are necessary to measure the exact temperature. This study concerns the measurement and calibration to confirm the soundness of the datum measured at the fuel central temperature measurement system installed in FTL facility