ExxonMobil Corporation (XOM) , a U.S. energy major, has initiated the restart of several units at its Joliet, IL, refinery following a three-week outage caused by a power failure. The 251,800-barrel-per-day (bpd) facility, which was shut down in mid-July due to a storm-induced power outage, produces approximately 9 million gallons of gasoline and diesel daily.During the outage, 16 units, including a vacuum distillation unit and a catalytic cracker unit, were adversely impacted. According to media reports, t ...