ConocoPhillips reports power failure at Wood River refinery

ConocoPhillips reported a power disruption yesterday at its Wood River refinery in Illinois, according to a filing with regulators.

More than 500 pounds of sulfur dioxide was released, according to the filing with the Illinois Emergency Management Agency.

Bill Stephens, a spokesman for ConocoPhillips, didn't immediately respond to an e-mail before normal business hours.

The 380,900-barrel-a-day refinery north east of St. Louis operated at reduced rates for almost a month after a power failure June 25. The plant returned to planned rates by July 18.

The refinery is located on the east side of the Mississippi River near Roxana, Illinois, about 15 miles northeast of St. Louis.