*** Fire Department Release *** At approximately 3:10 am on July 31st, the Roselle Fire Department received a report of an activated fire alarm on Norwood Ave. in Itasca. Upon arrival nothing was noted, and a visual inspection was done around the building and from the roof.  Once entry was gained, smoke was noted in the warehouse. Investigation revealed two plastic carts that were full of dirty rags and wood stain that had ignited. Two sprinkler heads activated and controlled this fire.   Had the sprinkler system not operated as designed, it is highly probable that this would have been a major fire as there were two barrels of flammable liquids nearby in this woodworking business.  Crews were on the scene for less than two hours doing ventilation, and the business was open that morning.