Firefighters sprayed a steady stream of water at the burning 2,300-gallon tank, but a state of emergency remained in place locally because it was unclear when the fire at Able Energy Inc. would burn itself out.
``That is the only way to safely handle this situation,'' said town manager Camille Furgiuele.
Firefighters also worked to keep the flames away from a leaking diesel fuel tank at the site.
Officials said the blast appeared to be an accident, but the cause had not been determined.
The town's three schools were closed Monday because many of the district's 1,700 students were unable to return home to fetch clothes and books, and because of safety concerns.
Able Energy delivers fuel oil, diesel and gas to homes and businesses in two counties, and has offices in Philadelphia and Florida.
