Hotel / Restaurant, Restaurant Sprinklers assist firefighters in restaurant fire (Lake Oswego, OR) February 4, 2014 viking210 A fire broke out at a restaurant in the middle of the night Tuesday. A single fire sprinkler activated and contained the fire until fire crews arrived and eliminated the rest of the blaze. According to firefighters, the sprinkler systems quick response saved the restaurant from far worse damage. Investigators report that the heat from the stove conducted through the wall and started the wood studs on fire.