Zinc-rich primer-coated or galvanized ASME SA-516 Grade 70 carbon steel vessels are commonly used in the chemical industry and refineries. Similar to galvanizing, zinc-rich primer coatings are used to protect steel surfaces from corrosion. It is one of the more effective means of sealing critical equipment from moisture, protecting it from corrosion. However, during weld repairs and post weld heat treatment (PWHT) these vessels experience high temperatures (1000-1300oF) and could be susceptible to liquid metal embrittlement (LME). LME of carbon steel and stainless steels due to molten zinc exposure has been known for many years. LME manifests itself by a reduction of the ductility of the substrate metal due to contact with liquid metal which results in brittle failure of an otherwise ductile material. A plate from one of such vessels with zinc primer coating and another one with a galvanized coating (ASME SA-516 Garde 70) were exposed to high temperatures under applied mechanical stress to study the potential for LME. The laboratory study results showed LME of the galvanized steel plate but no LME on the vessel plate with zinc primer coating. It is believed that the presence of an iron oxide interface layer between the primer and the substate prevented LME.