Upgrade and Application Research of Neutron Absorption Performance Testing Equipment for Boron Aluminum Alloy Materials

The testing equipment for boron aluminum alloy neutron absorption materials in spent fuel pool grid of nuclear power plant developed by China Institute of Atomic Energy was upgraded and improved, and the integrated data acquisition system, transmission system and control record analysis system were developed. The detection equipment can be used for multi-point measurement of samples of different sizes. The detection device has the characteristics of continuous, fast, and full area detection, with two modes: fixed point detection and mobile detection. The 20 cm × 30 cm hanging sample, 373 cm × 19.5 cm long board, 6 cm × 6 cm square template and Φ5 cm × 0.3 cm circular sample plate have been tested and the detection results have been analyzed. The neutron absorption performance testing equipment for boron aluminum alloy materials lays the foundation for conducting non-destructive testing research on domestically produced boron containing neutron absorption materials, and provides strong support for critical safety monitoring of spent fuel pools in nuclear power plants.