of fire detection and control systems. Alison designs special hazard fire detection actuation systems for areas where fires would prove disastrous, including power plants..., plastics, paints, etc....in bulk storage areas...in conveyor tunnels, coal mines, and diked areas...in electric power plants for protection on gas turbine peak loading stations..., petrochemical plants and aircraft hangars. In these environments, "almost perfect" can cost lives and millions of dollars, and nothing less than the highest achievable level of reliability...

, and diked areas...in electric power plants for protection on gas turbine peak loading stations, coal handling equipment tunnels, auxiliary warehouses, etc... and in aircraft hangars..., process plants of all types, and in shipboard use. The fire hazards posed by Group II Aircraft Hangars are addressed by NFPA 409. The standard defines a Group II hangar as one...