Standard for Installation of Fire Safety Devices based on Use and Occupancy Article 212

Water fog fire extinguishing equipment shall comply with the following provisions:1.The water fog sprayer, pipe, test pressure, water flow detecting device, actuating device, defluge valve, and water inlet shall be configured in accordance with the provisions of Articles 61, 62, 66 and 67.2.Each spraying area shall be not less than 150m2. If the area of the protected object is less than 150m2, the actual area shall apply.3.The capacity of water source for the biggest spraying area shall be not less than the water output of all the water fog sprinklers continuously discharging for 30 minutes. The water quantity in each square meter of the srapying area shall be not less than 20l/min.4.When all the water fog sprinklers in the biggest spraying area discharge water at the same time, the spraying pressure of each sprinkler shall be not less than 3.5kg/cm2 or 0.35MPa.The emergency power source of water fog fire extinguishing equipment shall meet the provision of Article 38; and in addition, the power capacity shall be enough to enable the equipment to work effectively for at least 45 minutes.