Indian Oil Corporation has kicked off the race for an engineering, procurement and construction contract covering storage tanks at its planned Ennore LNG terminal in Tamil Nadu.The public sector player has issued a request for expressions of interest in the job on the east coast north of Chennai.Bidders are required to have successfully carried out design, engineering, procurement, construction and commissioning of at least four full-containment LNG storage tanks of a minimum 120,000 cubic metres capacity.