Abstract: Ultrasonic fuel cleaning can eliminate the axial offset anomaly of nuclear power plant fuel assembly and reduce collective dose. This paper mainly describes the principle of ultrasonic fuel cleaning and its application in global nuclear power industry. As for the application of ultrasonic fuel cleaning for reducing the collective dose, this paper analyzes the specific benefits of the implementation of nuclear power plant and the general benefits of typical nuclear power plant, and points out the safety risks of fuel assembly and worker. The economic cost of ultrasonic fuel cleaning in domestic nuclear power plants is preliminarily calculated, and the application suggestions are put forward for those reactor units with high collective dose.

Key words: ultrasonic fuel cleaning, radiation protection, collective dose, application practice, benefit, risk, cost, suggestion