As a safe

clean and efficient energy source

the development of nuclear power will be the main trend of power development in the future. Key components and reactor internals of nuclear power plants need to be repaired and decommissioned after long-term operation in a high-radiation and high-temperature environment. To reduce the hazards of nuclear radiation on the operator

repair work needs to be carried out underwater. Underwater laser processing technology has broad application prospects in the field of nuclear power due to the characteristics of low heat input

precise acting position

and long-distance transmission. In this article

it summarized the principle and research status of underwater laser processing technology

such as underwater laser welding

peening

cutting

mainly introduced the application of underwater laser processing technology in nuclear power plant maintenance

it also pointed out the future development trend and key research directions of underwater laser processing technology.