The passive containment cooling system (PCCS) is one of the important passive safety systems in the advanced pressurized water reactor (APWR), which belongs to the 3rd generation nuclear reactor. In the design basis accident, the steam condensing on the inner surface of the containment shell and the cooling water evaporating from the outer surface of the containment shell. In the process, the heat is transferred from the inside of the containment to the outside. To span the expected range of conditions and provide proper model for evaluating the inner steam condensation coupled outer evaporation heat transfer process, the inner steam condensation coupled outer evaporation experimental test (ISCOE) is developed by State Nuclear Power Technology Research & Development Centre (SNPTRD). Facility components, test section structure, supplying systems and measurement technology are described in this paper, also results of some pretests is introduced to show property of the facility.
