Residence Hall/Dormitory, Residential College housing fire put out by fire sprinkler (Philadelphia, PA) July 19, 2013 viking210 When a fire broke out in an unattended unit in a college housing building, fire sprinklers activated and eliminated the fire. The cause of the fire was a blender set on top of an oven that had been left on. No injuries were reported. “[We’re] very fortunate to have fire sprinkler systems in all of the College Houses — they did their job,” said Vice President for Public Safety Maureen Rush.