ExxonMobil Baytown at reduced rates: Update 4

ExxonMobil's 557,000 b/d refinery in Baytown, Texas, is operating at reduced rates following an explosion and fire on a desulfurization unit that injured four workers. The fire broke out around 2am ET on 23 December on a unit that processes gasoline components, according to the company. Hours earlier refinery workers found a leak in a bypass line on the desulfurization unit, according to a report to state regulators, which led to flaring. Refinery crews lowered pressure on the leak location and put a repair plan into action to isolate the leak, according to the filing.