HOUSTON, Jan 8 (Reuters) – The large crude distillation unit (CDU) and coker were shut on Monday at Motiva Enterprises (MOTIV.UL) 626,000 barrel-per-day (bpd) Port Arthur, Texas refinery, the largest in the U.S., said sources familiar with plant operations. The 350,000-bpd VPS-5 CDU and the 110,000-bpd DCU-2 coker are scheduled to remain shut for a … Read more