The M310 unit of Fuqing NPP adopts the French technical specifications based on the French screening criteria.HPR1000 is the latest third-generation unit which adopts the Chinese technical specifications based on the American risk-guided screening criteria.Through comparison,significant differences are found in the operation restrictions of some systems between the two technical specifications.In order to find out the differences and analyze the reason between the two technical specifications,the operation restriction conditions of the residual heat removal system under the two technical specifications are analyzed in this paper,and suggestions are given on the management deviations of the current Chinese technical specifications based on the American technical specifications in the residual heat removal system by combining the general trend of the current domestic French technical specifications transferring to the American(Chinese)technical specifications.The advantages and disadvantages of the Chinese technical specifications compared with the French technical specifications are summarized by the probabilistic safety analysis management of the risk-guided technical specifications,and management suggestions and application directions are proposed.Meanwhile,the optimization suggestions of the overhaul window based on the Chinese technical specifications are given for the residual heat removal system.