Valero, on December 29, shut down the 96,000-barrel-per-day (BBL/d) Heavy Oil Cracker at its 220,000-BBL/d Bill Greehey West Complex in Corpus Christi, Texas. The cause and shutdown duration are unknown at this time. The Heavy Oil Cracker will be included in a 45-day turnaround to start mid-January, along with associated units.