Problems needing attention in design and construction of fire water supply system?

What problems should be paid attention to in the design and construction of fire water supply system? The following is a detailed introduction of Zhong Da Consulting for your reference.

Fire water supply system is an indispensable and important facility for fire fighting. The main problems that cause the fire water supply system to fail to meet the requirements are:

1, the capacity of the fire pool is too large or there is no anti-freezing facility.

For example, the fire pool of the North Tower Storage and Distribution Station of Yinchuan Gas and Thermal Power Corporation is an open flower pool, which freezes in winter and cannot supply water to the fire site in case of fire.

2. The water absorption mode of the fire pump is water injection.

Compared with the filling pump, the self-filling water-absorbing fire pump saves water filling time, starts quickly and runs reliably. Article 7.5.4 of the Code for Fire Protection Design of High-rise Civil Buildings (hereinafter referred to as "High Code") stipulates that the fire pump should be self-charging and its suction pipe should be equipped with a valve. According to inspection statistics, about 50% of the fire pump rooms in our area are on the ground, while the fire pool is filled with water underground, so it is difficult to ensure uninterrupted water supply when extinguishing the fire.

3, outdoor fire water supply pipe network diameter is too small.

Fire water supply test and water pressure test show that the pipe with the diameter of 100mm can barely supply water for a fire truck. According to statistics, the diameter of 20% outdoor fire water supply pipeline is less than 100mm, which will have a certain impact on fire water supply capacity.

4, underground fire pump adapter installed too deep, too shallow or no one-way valve.

The main purpose of the fire pump adapter is that when the indoor fire pump fails or encounters a fire, the fire truck will send the water to the indoor fire pipe network through the pump adapter to extinguish the fire. According to the inspection statistics, 25% of the pump adapters are not installed according to the specification requirements. For example, after the outdoor floor of Ningxia Hall is raised 1m, the distance between the bolt hole and the manhole cover is1.5m; ; The bolt hole of Ningxia Hongqiao Hotel is almost close to the manhole cover, which will seriously affect the operation and use of firefighters.

5. The indoor fire fighting pipe network is not annular or the pipe diameter is too small.

According to inspection statistics, 40% of ordinary civil buildings should be equipped with circular pipe network, but it is actually a branch pipe network. Such as Ningxia Commercial Building, Yinchuan Xingqing Shopping Mall, Yinchuan Shopping Mall, etc. There is also a six-story railway hotel, which only forms a ring on the third floor, but it becomes the shape of a school above the third floor.

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