抄録
According to the relationship between the reactor power, the core power distributions and the measured signals of power range channels of the ex-core detectors (RPN), the mathematical formula of calibration for parameters KU, KL and α can be deduced. On the Unit 3 of LingAo Phase 2, during the plant's first Startup, some tests were carried out at various power levels of the reactor. At each power level, full or partial flux map measurements were done by the in-core neutron measurement system (RIC), during the measurements of flux map, several heat balance measurements were done on the special equipment named KME system, and at the same time the signals of the RPN power range channels were recorded. From these tests, exact reactor powers, the core power distributions and the signals of the RPN detectors can be known. And then, the parameters KU, KL and α calibration results can be calculated by putting the Data into the formula deduced by us. According to the result of the calibration, the biggest error of the power is -0.59%FP and the biggest error of axial power deviation is -0.59%FP which was very good to the criterion.
