The refinery's private firefighting operation had extinguished the blaze by about 8 p.m., company spokesman Shane Pochard told the Detroit Free Press.
There was no immediate word on the cause of the fire and crews were evaluating air quality, Pochard said.
No refinery workers were injured and the appropriate federal authorities have been notified of the situation, he said.
Pochard said the fire was centered in one of the smaller tanks at the refinery.
A Detroit Fire Department hazmat team responded to the the scene, WWJ-AM, Detroit, reported.
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