Method applicable to pressurized water reactor nuclear power plant spent fuel pool serious accident processing

The invention relates to a method applicable to pressurized water reactor nuclear power plant spent fuel pool serious accident processing. The method includes the following steps that: a, the water level depth of a spent fuel pool and a plant radiation dose rate corresponding to the spent fuel pool are obtained; b, when the water level depth is smaller than a first preset threshold value or the plant radiation dose rate is larger than a second preset threshold value, a spent fuel pool accident processing program is executed for once; c, after the completion of the execution of the accident processing program, the water level depth of the spent fuel pool, pool temperature and the plant radiation dose rate are further detected; d, whether the detected water level depth, pool temperature and plant radiation dose rate meet pre-set conditions is judged; e, the detected water level depth, pool temperature and plant radiation dose rate meet the pre-set conditions, accident processing is terminated; and if the detect