LyondellBasell Industries NV (LYB) said an operating issue at a unit led to above-normal emissions at its Houston refinery.
"Process unit upset in 434 Claus unit," the refinery said in a statement to the Texas Commission on Environmental Quality, referring to a unit used in the process of sulfur recovery. "Operating steps were taken to mitigate the event and the unit returned to normal operations."
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It said the emissions of sulfur dioxide and another gas the resulted happened Wednesday and lasted less than an hour.
The 264,000-barrel-a-day refinery facility covers 700 acres and is located at the city limits of Houston and Pasadena in Texas.
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(END) Dow Jones Newswires
January 25, 2018 08:52 ET (13:52 GMT)