Phillips 66 (PSX) reported a power blip and emissions Friday at its Sweeny refinery in Texas.
"The deluge system activated at the Cogen Unit causing the GSU2 transformer to arc, resulting in a low voltage power dip," the refinery said in a statement to the Texas Commission on Environmental Quality. "This resulted in the tripping of three transformers on the Electrostatic Precipitator."
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The refinery said the transformer reset itself and power was restored. "The power blip lasted only seconds but was enough to cause the excess opacity," it said.
The 247,000-barrel-a-day refinery is located in Old Ocean, southwest of Houston.
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June 02, 2017 22:28 ET (02:28 GMT)