Authorities say there are no reported injuries at this time.
The fire was reported Friday at the 3000 block of Penrose Avenue.
Government officials hailed the sale of the ConocoPhillips refinery in Trainer, Delaware County to a division of Delta Airlines, which plans to use the facility to keep its own fuel costs in check. But there are still two other refineries whose futures remain in doubt.
The CEO at Sunoco is stepping down at the end of the month after four years at the helm, overseeing changes that include a decision to get out of the oil refining business in favor becoming a retail operation.
Officials of Sunoco and ConocoPhillips told state lawmakers yesterday they are still working to find a buyer their idled Delaware County refineries, while local emergency response officials expressed concerns that they may be left holding the bag if no buyers are found.