Optical method for fuel pellet diameter measurement

This article describes a technique for measuring the diameter of fuel pellets in the range of 7.5-8.3 mm and its use in the Geometric dimension control unit of the line for automatic control of the geometric dimensions of fuel pellets stacked on pallets. The principle of operation of the unit for controlling the geometric dimensions of pellets is based on measuring the diameter of a pellet from the photograph of the pellet shadow.