MELCOR　is　widely　used　and　sufficiently　trusted　for　severe　accident　analysis.　However,　the　occurrence　of　Fukushima　has　increased　the　focus　on　severe　accident　codes　and　their　use.　A　MELCOR　core　degradation　calculation　was　conducted　at　the　University　of　Wisconsin-Madison　under　the　help　of　Sandia.　The　calculation　results　were　checked　by　comparing　with　a　past　CORA　experiment　MELCOR　calculation　results　included　the　flow　rate　of　argon　and　steam,　the　generation　rate　of　hydrogen.　Through　this　work,　the　performance　of　MELCOR　COR　package　was　reviewed　in　detail.　This　paper　compares　the　hydrogen　generation　rates　predicted　by　MELCOR　to　the　CORA　test　data.　While　agreement　is　reasonable　it　could　be　improved.　Additionally,　the　MELCOR　zirconium　oxidation　model　was　analyzed.　(C)　2014　Elsevier　B.V.　All　rights　reserved.