Motiva Enterprises, the owner of the second biggest refinery in the United States – Port Arthur in Texas – expects to restart the gasoline-producing fluidic catalytic cracker (FCC) at the facility on Tuesday, sources with knowledge of the plant operations told Reuters. Last week, Motiva Enterprises shut on Wednesday the 81,000-barrel-per-day FCC unit to repair a leak. The unit is just one of several cracker and distillation units at the 626,000-bpd refinery. On Monday, Motiva Enterprises restarted production at the 200,000-bpd VPS-4…