Office Building Sprinkler system averts major fire (Yankton, SD) February 13, 2012 viking210 A minor fire that could have turned into a big problem was extinguished by a Yankton firm’s sprinkler system Sunday morning. A gas-fired evaporator had malfunctioned, igniting some combustible items in the immediate area and setting off the alarm. Thanks to the sprinkler system, there was minimal damage from the fire. “Everything did what is was suppose to do,” Assistant Fire Chief Larry Nickels said. “That could have been a very bad fire for that business.”