Leakage detection of AP1000 nuclear power plant ventilation system

Describes the requirements on the sealing design and leakage class of AP1000 nuclear power plant, compares the similarities and differences of leakage detection from the international and Chinese standards of nuclear power plant ventilation system, and identifies the key points and testing necessity of leakage detection for ventilation system related to nuclear safety. Summarizes system integrity requirements and test methods of AP1000 nuclear power plant ventilation system, describes the application and requirements for segment test, final joints and overpressure test, and discusses the reasonable changes of leakage boundary applying to practical project.