Whether outdoor fire pipes need to be insulated

Need to look at the place.

Building. Firefighting. Design Specifications.

Point 4 stipulates: fire water supply in severe cold and cold areas. Pipeline. And.

Outside. Fire hydrant.

should be taken. Anti-freeze measures.

Whether the fire pipe needs to be insulated depends mainly on whether the fire pipe has the possibility of freezing and cracking.

Indoor fire pipes generally do not need antifreeze and thermal insulation measures, because the indoor temperature is basically impossible to fall below zero.

In order to ensure that the fire pipe network can operate normally in the cold and dry winter in Northeast China, the pipeline network is not frozen in case of fire and can be put into use immediately. It is necessary to take thermal insulation and anti-freezing treatment measures for the pipeline.

Outdoor fire pipes need to be insulated according to local climatic conditions and air temperatures. If the pipes are covered with snow and ice during the cold season or the temperature is very low, it is necessary to install insulation on the outside of the pipes to prevent the pipes from freezing or cracking. In areas with higher temperatures, you can choose not to install insulation, as this will increase the difficulty and cost of maintaining fire pipes.

When insulation, it is necessary to choose appropriate insulation materials and installation methods to ensure that the pipes can work properly in various climatic conditions.

The third city outdoor fire water pipes, outdoor.

Fire hydrants and fire pools.

Article The layout of the outdoor fire water pipeline meets the following requirements:

The outdoor fire water supply pipe network should be arranged in a ring shape, but in the early stage of construction or when the outdoor fire water consumption does not exceed 15l s, it can be arranged in a branch shape;

The main water pipes of the annular pipe network and the water pipes that convey water to the annular pipe network are both.

There should be no less than two, and when one of them fails, the rest of the thousand tubes should be.

The total amount of water that can still pass the firefighting;

3. The annular pipeline should be divided into several independent sections, and the number of fire hydrants in each section should not exceed 5;

4. The minimum diameter of the outdoor fire water supply pipe should not be 100mm.

Article The arrangement of outdoor fire hydrants meets the following requirements:

Outdoor fire hydrants should be set along the road, and when the road width exceeds 60m, fire hydrants should be set on both sides of the road and should be close to the intersection;

2. Elimination of Class A, B and C liquid storage tank areas and liquefied petroleum gas tank farms.

The fire hydrant is not outside the fire embankment. But 15m from the tank wall range of domestic fire.

Plugs, liquid destruction letters should not be counted in the number of tanks that can be used.

The fire hydrant should not be more than 2m away from the roadside and not less than 5m away from the outer wall of the house;

3. The spacing of outdoor fire hydrants should not exceed 120m;

4. The protection radius of outdoor fire hydrants should not exceed 150m; Fire fighting in the municipality.

The bolt protection radius is less than 150m, if the fire water consumption does not exceed 15L s, there is no outdoor fire hydrant;

5. The number of outdoor fire hydrants should be calculated according to the amount of outdoor fire water used, and the water consumption of each outdoor fire hydrant should be calculated according to 10 15L s;

6. Outdoor above-ground fire hydrants should have a diameter of 150mm or.

100mm and two alarm bolts with a diameter of 65mm;

7. Outdoor underground fire hydrants should have diameters of 100mm and 65mm.

Fire pipes are not the same in the North and South as they are:

1. The fire pipes in the north are generally not insulated: the fire pipes have the hidden danger of freezing, and the "dry fire extinguishing system" will be used, that is, the pipeline is usually waterless, and the pipeline is full of compressed gas.

When a fire breaks out, the sprinkler system first discharges the gas, and the dry alarm valve starts to act, so that there is water in the pipeline and can be fired.

2. The temperature in the south is higher than that in the north, and the "wet system" will be widely used, and the fire pipes in the south are generally buried underground, even if the temperature is occasionally below 0 degrees, there will be no pipeline freezing.

As an indoor pipeline, as long as the room temperature does not drop below zero, there is no need for heat insulation.

Indoors or outdoors as long as it is below zero temperature, keep warm.

In addition, the fire water is generally not touched without accidents, and the water temperature is synchronized with the indoor temperature. Therefore, anti-condensation insulation is not required.

If your unit is in the north and the fire pipe has a potential risk of freezing, your unit will use a "dry fire extinguishing system", that is, the pipeline is usually waterless, and the pipe is full of compressed gas. When a fire breaks out, the sprinkler system first discharges the gas, and the dry alarm valve starts to act, at which point there is water in the pipe.

Therefore, fire pipes are generally not insulated, note: it is "general". The temperature in the south is higher than in the north, and although the temperature occasionally drops below 0 degrees Celsius is widely used, the fire pipes are generally buried underground, so there is no pipe freezing.