Dynamic dilution calibration method for non-radioactive methyl iodine tester

Abstract The non-radioactive methyl iodine tester is mainly used to measure the methyl iodine concentration in the ventilation system of nuclear power plants. In order to ensure the accuracy and reliability of the measurement data, the measurement instrument must be calibrated regularly. In this paper, a calibration method for a non-radioactive methyl iodine tester is proposed based on the dynamic dilution method. Calibration items such as value error, measurement repeatability, stability, linearity, and relative deviation of integral concentration are presented. Their reference indexes are shown. The rationality of the calibration work of a non-radioactive methyl iodine tester by dynamic dilution method is verified.