Effectiveness Study of Artificial Intelligent Facility System in Maintaining Building Fire Safety (Case Study: Typical Public Building Cases of Fire-Fighting Facilities Management in China)

Table 8

The problem of automatic fire-extinguishing sprinkler systems (source: author).

Functional items	Specific problem performance
Water supply facilities	(1) The effective capacity of the fire pool is small, and there is no division measure for the pool with a large capacity; (2) The flow of the fire pump is too small or the head is too large. A group of fire pumps has only one suction pipe or only one outlet pipe. There is no pressure gauge on the outlet pipe, no test drain valve, no pressure relief valve, the water diversion device is set incorrectly, the diameter of the suction pipe is too small, and the common water pump is mixed with the fire pump; (3) The distance between the water pump adapter and the water intake of the fire pool is greater than 40 m, the number is relatively small, and it is not set in zones; (4) The materials of the shared water tank on the roof of the fire water tank are the same as those of the fire pipe network, and there are no special measures for fire water; (5) Fire hydrant pipe: small diameter, galvanized pipe, easy to rust, causing water leakage; (6) Fire hydrant button: the button cannot directly start the water pump but can only start the fire pump through the linkage controller. After the button is started, there is no confirmation signal, and the button cannot alarm and display the position
Voltage stabilizing system	The flow of the pressure stabilizing valve is too large, the position setting of the pressure stabilizing valve does not meet the requirement, and the setting of the pressure-reducing device does not meet the requirements
Wet alarm valve	The location is inappropriate, and the water supply control valve is not set
Water flow indicator and water pressure	The signal valve is not installed in front of the water flow indicator or the distance from the water flow indicator is less than 300 mm. The tube diameter of the end test device is less than 25 mm. During the system linkage test, the end test valve is opened and the reading of the pressure gauge is less than 0.049 MPa
Other equipment	(1) The nozzle selection does not meet the requirements and is close to the high-power heating lamps; (2) The pressure relief valve is not installed on the outlet pipe of the water pump. In some installations, the pipe network was not flushed and pressure tested as required; (3) Some pipe joints have a water leakage and some pipes have debris, which is easy to block the nozzle. The gap between the casing and the pipeline is not filled with relevant materials. The pressure switch and hydraulic alarm bell give false alarm