Under　hypothetical　Reactor　Pressure　Vessel　(RPV)　failure　accidents　in　Light　Water　Reactor　(LWR),　Molten　Corium-Concrete　Interaction　(MCCI)　will　cause　erosion　of　cavity　concrete,　possibly　resulting　in　containment　failure　due　to　basemat　penetration　and　overpressure.　The　CINA　(Corium-Concrete　Interaction　Apparatus)　experiment　was　conducted　to　investigate　the　MCCI　of　metallic　and　oxidic　corium　with　siliceous　concrete.　Simulant　melt　material　metallic　iron　and　oxidic　alumina　generated　by　exothermic　thermite　chemical　reaction　was　used　to　investigate　the　two-dimensional　erosion　of　a　cylindrical　crucible　in　CINA　experiment.　The　crucible　was　fabricated　from　siliceous　concrete　with　an　inner　diameter　of　300　mm　and　a　height　of　500　mm　containing　reinforcement　(rebars).　Decay　heat　in　the　melt　was　simulated　by　subsequent　sustained　addition　of　thermite.　During　the　experiment,　the　melt　temperature　was　monitored　by　two　thermocouples　and　a　two-color　optical　endurance　pyrometer.　Besides,　the　phenomenon　that　appeared　on　the　melt　surface　was　recorded　by　the　video　camera　placed　above　the　crucible　and　the　formation　process　of　the　crust　anchoring　was　observed.　After　the　experiment,　the　crucible　was　split　in　half　by　a　wire　saw　to　accurately　measure　the　ablation　depth.　Axial-radial　ablation　depths　were　25　mm　and　13　mm,　respectively.　Current　findings　contribute　to　the　further　understanding　of　MCCI　mechanisms　and　the　optimization　of　MCCI　mitigation　strategies.　©　2021