Abstract: The paper reviews the access requirements of radioactive control area in NPP, and introduces the access process of CPR1000 as well as the international advanced access control mode “EVEREST”. The access management of radioactive control area for CPR1000 NPPs based on radiation zoning requires outer-layer clothes off first and then radiation protective clothing on before entering into the control area, which is complicated comparing with the “EVEREST” mode, which bases on contamination zoning and evolves towards an entrance without universal dress. “EVEREST” needs exact contamination partition, and adopts different radiation wear and access process for each zone. Its purpose is to simplify the NPP radioactive control area access. By comparison, EVEREST is found a good applicability for the recast of in-service PWR NPPs.

Key words: pressurized water nuclear power plant, radioactive control area, people access, “EVEREST” mode