The HCU turnaround at the Corpus Christi West Plant is complete, and the unit has been restarted, Bill Day, a spokesman for Valero, said in an email.
No other updates this morning, he added, referring to the rest of the leading independent refiner's system.
The planned overhaul on the 36,000-bpd hydrocracker began in late February with the maintenance seen completed around March 14, according to a previous notice the company had filed with state environmental regulators.
A hydrocracker uses hydrogen to make gasoline from crude oil. (Reporting by Haitham Haddadin, Editing by Chizu Nomiyama)