Summary: The color steel plate house is a new concept environmentally friendly economical house with light steel H-shaped steel a...
The color steel plate house is a new concept environmentally friendly economical house with light steel H-shaped steel and channel steel as the framework, sandwich panel as the wallboard material, space combination with standard modulus series, and bolted or welded components. It is widely used in industrial plants, workshops, warehouses and temporary residences. What are the main factors of fire in color steel house?
1. Insufficient understanding of fire hazards and fire hazards of color steel plates. Color steel sandwich panels are made of color coated steel plates, and the core materials are mainly polystyrene, polyurethane, and rock wool. The first two are polystyrene (benzene board for short) or polyurethane of different thickness sandwiched between two thin steel plates. Once this material is exposed to high temperature sparks or open flames, it will burn immediately, due to the honeycomb structure of the material itself. In addition, the contact surface with the air is enlarged, and the burning is very violent. During the fighting, water and fire extinguishing agent can only be sprayed on the steel plate outside the color steel plate, and cannot directly act on the combustible material in the interlayer, and the combustion products are extremely toxic. Easy to cause casualties, such materials are very popular with investors or developers due to their relatively low cost. The latter is rock wool of different thicknesses sandwiched between two layers of thin steel plates. This material is a non-combustible material and has a better fire and heat insulation effect. However, due to its relatively high cost, ordinary investors or developers are reluctant to use it.
Color steel plate
2. Some color steel plate construction projects have not been audited and accepted by fire protection, resulting in inherent hidden dangers in color steel plate construction. In some projects under construction, fire protection design was not considered in the design, or although there was fire protection design, the construction was not carried out according to the drawings during the construction process. After the completion of the project, the fire protection inspection and acceptance were not carried out. As a result, several aspects that can be checked are ignored. In addition, the local government re-introduces the amount of funds in the process of attracting investment and neglects the procedures, acquiescing to the illegal phenomenon of enterprises before construction and use before inspection, and it is difficult for such structural buildings to be fireproof after being put into use. .
3. The owner arbitrarily changes the use function, increasing the risk of fire. The fire hazard of some color steel structure factory buildings when applying for fire protection review and acceptance is Category D E, but in fact it may be a category C plant, or it was produced in Category D E at the beginning of its use, but it was not declared in time after the adjustment of the production project. For example, a special automobile refitting factory in Jinan City arbitrarily changed the color steel plate warehouse into a factory building, and carried out welding and painting construction operations in the factory building, but did not take any special fire separation measures. As a result, in April 2006, due to inadvertent welding It caused a fire, caused the plant to collapse, and caused huge property losses.
4. Improper installation and use of electrical appliances is also an important cause of fires in color steel houses. The cause of fire in color steel plate buildings is directly related to the illegal use of electrical appliances and circuit aging. Some are directly installed in the sandwich layer of the color steel plate, and some are directly drilled through the color steel plate when the wire passes through the wall. Drilling without a sheath is likely to cause damage to the insulation layer of the wire and cause a short circuit to fire and cause a fire. Poor management after being put into use, using an open flame or welding and cutting operations near the color steel plate caused the combustible sandwich material inside the color steel plate to burn and cause a fire.