The passive containment cooling system (PCCS) is one of the important components of passive safety system, which serves the 3rd generation advanced pressurized water reactor (APWR). The containment vessel would transfer the heat released from the reactor to the ultimate heat sink through natural phenomenon. Steam condensation on the inner surface of containment is one of the most dominating mechanisms during heat removal process through PCCS. SCOPE (Steam condensation on cold plate experiment) test facility was designed to investigate the fundamentals of steam condensation with non-condensable gas on cold plate surface. Design and performance of the facility have been introduced in detail at ICONE22. Part of the preliminary results from SCOPE is described in this work. The experiment pressure range is from 0.3 to 0.5 MPa(d). The experiment results show that gas velocity plays an important role in the mass and heat transfer process and should be considered in the prediction of containment after design basic accident (DBA). More sensitive experimental work are needed for further analysis.
