By Dan Molinski

Valero Energy Corp. reported an operational snag Thursday at its refinery in Port Arthur, Texas.

The refinery said the "process unit upset" also led to emissions of sulfur dioxide and other gases that began Thursday morning and lasted less than two hours, according to a statement it sent to the Texas Commission on Environmental Quality.

The 335,000-barrel-a-day refinery is located east of Houston.

Write to Dan Molinski at dan.molinski@wsj.com

 

(END) Dow Jones Newswires

January 26, 2017 12:21 ET (17:21 GMT)

Copyright (c) 2017 Dow Jones & Company, Inc.
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