Nuclear power plant 1E-grade cable identification life optimization method and system

The invention discloses a nuclear power plant 1E-grade cable identification life optimization method and system, and relates to the technical field of nuclear power plant cable environment identification, and the method comprises the steps: screening environment monitoring points, and making a monitoring plan based on the selected environment monitoring points; an environment monitoring instrument is installed, an electronic thermometer and chemical temperature test paper are used for monitoring the temperature, and an alanine irradiation dose monitoring test piece is used for monitoring the irradiation dose rate; after each fuel cycle is finished, temperature and irradiation dose data are analyzed, and the maximum value is recorded; and calculating the optimized service life of the 1E-grade cable through thermal aging and irradiation aging extrapolation formulas by using monitoring data. By regularly monitoring the actual temperature and irradiation dose rate in the worst environment, correcting the assumed