UPDATE 1-Motiva Port Arthur refinery units restarted

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NEW YORK, June 5 (Reuters) - Motiva Enterprises LLC has restarted the processing units at its 285,000 barrel per day refinery in Port Arthur, Texas, after a power outage on Monday, a spokeswoman for the joint venture said on Thursday.

Most of the processing units at the refinery are due to return to normal operations by Friday after a complete power failure at the refinery, which is owned by Saudi Aramco and Royal Dutch Shell. (Reporting by Janet McGurty)