Apartment Building, Residential Rockville, MD – Sprinkler system activates to help contain apartment fire November 20, 2017 viking210 A Thursday night fire in the walls of a Rockville apartment building was likely an accidental fire caused by smoking materials, said Pete Piringer, spokesman for Montgomery County Fire and Rescue. The fire, at the Galvan apartments in the 1800 block of Chapman Avenue, started sometime before 5:30 p.m. Smoke on the third floor activated the sprinkler system, according to Piringer. No one was injured by the fire.