My opinion on not setting fire pool

2022-08-08
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Article 8.3.3 of the code for fire protection design of buildings stipulates that a fire pool should be set up under the following circumstances:

first, when the production and domestic water consumption reaches the maximum, the municipal water supply pipeline inlet pipe or natural water source cannot meet the indoor and outdoor fire prevention water consumption

II. The municipal water supply pipeline is branched or has only one water inlet pipe, and the sum of fire water consumption exceeds 25L/s

according to this regulation, the volume of a building is greater than 3000m3. According to the water consumption standard of the outdoor fire hydrant of the building, as long as the fixture is selected correctly, the water consumption of the outdoor fire hydrant is greater than 20L/s. generally, the water consumption of the indoor fire hydrant of the building with indoor fire hydrant is more than 101L/s. In this way, the sum of indoor and outdoor fire water consumption exceeds 25l/s, and urban pipes generally cannot meet the pressure requirements of indoor fire hydrants in buildings with more than several floors. It can be said that each building equipped with indoor fire hydrants basically needs to build a fire pool. The author believes that this code provision should be cancelled for the following reasons:

(1) after investigation, w full-automatic double number display spring tension and compression testing machine, In the case of fire fighting in the city, where the loading screw of the fire truck moves up and down to drive the lower jaw to move, the fire truck has hardly used the fire pool. The water is from the outdoor fire hydrant and the fire truck's own water, and the fire pool is in vain. Of course, for some high-rise buildings that cannot reach the remedial capacity of fire engines based on self rescue, the fire pool can still play a role

(2) the setting of fire water tanks wastes a lot of water resources, land resources and capital construction investment. According to article 8.3.3 of the code for fire protection design of buildings, a widely used high-performance plastic cop (cycloolefin polymer) can be used for pharmaceutical products that require particularly complex packaging. In cities, thousands of fire pools need to be set up. If each fire pool is calculated at an average of 300m3, nearly 3million M3 of water will not be used for a long time. The water needs to be changed regularly. The construction of a large number of fire pools not only wastes a lot of precious water resources, but also wastes the urban land and capital construction investment that cherish earth as gold. If each fire pool is calculated at 120000 yuan (including land cost), the construction cost of a large city's fire pool is as high as hundreds of millions of yuan, and the national figure is even more impressive, estimated to be more than 10billion yuan

(3) there is no fire pool course to simplify the design and reduce the contradictions between Party A, the design institute and the disciplines of the design institute. In some units with tight land use, Party A and the design unit often have contradictions and confusion about the location and size of the fire pool, and there are many contradictions between the disciplines because of the design of the fire pool

(4) someone may say, where does the water come from after a fire? The author believes that in cities or regions with reliable municipal water pipelines, the fire water source should come from outdoor fire hydrants and self-contained water of fire engines. In areas without municipal water sources and with poor fire-fighting capacity, regional fire pools can be built to break the boundaries between units, so as to achieve the purpose of resource sharing. In case of a fire, multiple fire engines can jointly and alternately take water to ensure the uninterrupted fire-fighting water supply

(5) for buildings that rely on fire engines for disaster relief and buildings with indoor fire water, the specification should clearly stipulate that the inlet pipe of the indoor fire pump should directly take water from the municipal pipeline, rather than "should", and should be placed in an important position. Taking water from municipal water supply pipelines can generally meet the requirements of indoor fire water volume. In fact, it has been implemented in some large cities in China for a long time. As long as the management is strengthened, the problems such as preventing the fire pump from running in non fire conditions can be solved

(6) strengthen the infrastructure construction of fire brigade. The quality of firefighters in our country is very high, but the fire-fighting facilities need to be strengthened. The number of fire engines and advanced fire-fighting facilities should be increased. A fire brigade should have dozens of fire engines, and a few fire engines with large capacity water tanks (about dozens of cubic meters) should be increased. This can make the fire engines form a "flowing pool" in case of fire, so as to ensure the reliability of fire-fighting water, which can be used in case of problems in urban water sources

(7) strengthen the supporting facilities of fire hydrants. The setting of municipal and outdoor fire hydrants shall meet the specifications and water intake requirements of fire engines. In many cities, the setting of municipal fire hydrants is seriously insufficient, which should be supplemented and clearly marked. Because outdoor fire hydrants are important sources of fire water, government departments should first start to meet the specifications

in a word, the formulation of fire protection specifications should be based on science, practice and mathematical statistics, rather than the stricter the better. We should boldly delete the stripes without precedent and successful experience and replace them with effective provisions

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