* Coker, hydrotreaters, reformers restarts planned
* Planned production rates expected later in the week (Adds details, background)
HOUSTON, Jan 11 (Reuters) - Motiva Enterprises plans to return a 180,000 barrel-per-day (bpd) vacuum distillation unit to operation Wednesday at its 285,000-bpd Port Arthur, Texas, refinery, according to sources familiar with refinery operations.
A Motiva spokesman declined to discuss refinery operations.
The refinery was shut on Jan. 4 when a crane collapse knocked out power and damaged feed lines to the refinery’s two vacuum units, which do the initial refining of crude oil in the refinery.
A 75,000 bpd vacuum unit was back in operation by Monday after restarting over the weekend.
The units are expected to reach planned production levels by the end of the week, the sources said.
A delayed coking unit, six hydrotreaters and a catalytic reforming unit will come on line after the larger crude unit is restarted.
The U.S. Occupational Safety and Health Administration is investigating the Jan. 4 accident when the 200-foot (61-meter) tall crane toppled over backwards while lifting pipe as part of an expansion project aimed at boosting the Port Arthur refinery’s capacity to 600,000 bpd by early 2012.
Once the expansion is complete, the refinery would be the largest in the United States.
The accident was the second crane mishap on the project. In April, a worker was killed when material fell off a crane.
Motiva is a joint venture between Shell Oil Co (RDSa.L) and Saudi Aramco. (Reporting by Erwin Seba)