Oil and Gas Kaduna, 2nd PH refineries undergoing comprehensive overhaul – NNPC The Nigerian National Petroleum Company Limited (NNPC Ltd.), says the 150,000 barrels per day (bpd) Port Harcourt Refinery and Kaduna Refinery are undergoing a comprehensive overhaul, designed to meet world-class starreportersonline_Admin4 months ago4 months agoKeep Reading