By Dan Molinski
Marathon Petroleum on Wednesday reported excessive emissions following issues with a Residual Hydrotreating Unit at its Galveston Bay refining complex in Texas.
In a regulatory filing to the Texas Commission on Environmental Quality, the refinery cited “drag valve issues” that forced it “to de-pressure to [the] flare to lower pressure and re-stabilize [the] unit” before it resumed normal operations.
It said the incident happened late Tuesday, and that the above-normal emissions of sulfur dioxide and other gases lasted four-and-a-half hours.
Marathon’s 593,000-barrel-a-day Galveston Bay refining complex is located about 40 miles southeast of Houston.
Write to Dan Molinski at [email protected]
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