Abstract: In the operation stage of a nuclear power plant, reasonable staffing at the reactor building under different conditions is of great significance for balancing productivity and the safety of personnel therein. We analyzed comparatively the situations of CPR1000 and EPR, and formulated a scheme for Hualong One nuclear power unit. It can be used in actual commercial service of the unit, and also provide reference for other domestic NPP units.

Key words: Reactor building, Staffing, Hualong One, Operating condition, Airlock system