Experimental characterization on accuracy of multi-detector boron meter

The previous MCNP simulation studies show that the accuracy of the multi detector boron meter is improved (0.4%) and the accuracy improvement is 65% compared with the single detector boron meter through experiments which based on simulation. The accuracy of the multi - detector boron meter was confirmed through previous studies and the system was constructed for the experiment in the actual cooling water circulation environment. In this paper, a study was conducted to measure and analyze the accuracy of 0 to 5000 ppm boric acid concentration measurement of a multi-detector boron meter in a real reactor environment through a coolant circulation system. Accuracy analysis of multiple detector boron meter in actual coolant circulation environment was performed and the results were analyzed Compared to conventional single-detector boron meters, 43.45% improved accuracy is achieved. For the repeatability test, the re-measured count rate was used to evaluate the accuracy and the performance was improved by 12%.