“…In response to the fierce competition in the energy market, nuclear power companies are considering operating nuclear power plants in a more economical, efficient, and safe manner. Besides, with the upgrading of nuclear power plants, systems and equipment are becoming more sophisticated and expensive (Kwon et al, 2018), which poses challenges to the timeliness, accuracy, and forward-looking of operation and maintenance (O&M) practices (Al Rashdan and St Germain, 2018;Liu and Wang, 2019). Traditional O&M practices with periodic maintenance as the core need to be further upgraded to meet these requirements.…”