Research of MCR Inleakage Tracer Gas Test of AP1000 Nuclear Power Plant

Combining with the sealed design of AP1000 MCR and passive design of MCR ventilation systems,this paper explores the method and theory which is suitable for AP1000 main control room inleakage tracer gas test and anticipates the test results and difficulties.Results show that the constant injection test is the preferred method for AP1000 main control room inleakage tracer gas test.The constant injection test based on mature theories and with strong operability and high precision,can well meet the AP1000 passive design verification requirements.