FIRE STONE FIRE AND SECURITY SYSTEMS LLC on Instagram: "As per NFPA, periodic inspection and maintenance are required to ensure Sprinkler systems are in optimum working condition. Sprinkler System - Function Test (Flame Activation Test) What we see here is a Flame activation test which is used to measure and verify the Response time index, flow and flow coverage of sprinkler heads. An additional test to the standard maintenance procedure, done to ensure if the sprinkler heads themselves along wi