Other / Not Specified, Other Business Sprinkler System Controlled Chemical Fire (Portsmouth, NH) December 22, 2011 viking210 Because sprinklers and alarms worked as designed, Achilles said, the fire serves as a good reminder of the importance of fire prevention devices. He said if the rags had ignited in the same location 20 or 30 years ago, when fire codes did not require sprinklers and alarms, “it could have gone to two or three alarms.”