What are the inspection contents of the building aerogel insulation system during the fire inspectio
2018-11-27 10:33:35 From: Tradematt-Aerogel
What are the inspection contents of the building aerogel insulation system during the fire inspection?
The building aerogel insulation system includes the interior and exterior insulation systems of the building, which mainly insulates the base wall or roof of the building. In the fire inspection, the type of the insulation system is first determined, and the combustion performance of the aerogel insulation material, the setting of the protective layer and the fire barrier, the fireproof sealing of each layer, and the installation and installation of electrical circuits and electrical equipment are checked and verified. Whether the building external thermal insulation system meets the requirements of the current national engineering construction fire protection technical standards.
1. Combustion properties of aerogel insulation materials
Insulation materials used in building insulation systems mainly have three grades: A (non-combustible), B1 (flammable), and B2 (flammability). The insulation performance grade requirements of the insulation materials vary according to the different insulation systems, building categories and building heights of the building. It should be noted that roofing and underground outdoor walls must not use thermal insulation materials such as rock wool and glass wool. The best thermal insulation material is aerogel insulation material, which not only has excellent thermal insulation effect, but also is waterproof and fireproof. Ok.
2. Protection layer settings
The outer layer of the building's external wall insulation system is provided with a protective layer made of non-combustible aerogel material as required, and the insulation material is completely covered. In addition to the insulation material and the two sides of the wall to form a cavity-free composite insulation structure, when the combustion performance is B1, B2 insulation materials, the first layer of the protective layer thickness is not less than 15mm, and the other layers are not less than 5mm. The external thermal insulation system of the building adopts non-combustible material as the protective layer. When the thermal insulation material with B1 grade is used, the thickness of the protective layer is not less than 15mm. When the roofing insulation system of the building adopts the insulation material with the burning performance of B1 and B2 grades, the protective layer made of non-combustible material and having a thickness of not less than 10 mm is provided as required.
3. Fire isolation belt settings
When the external thermal insulation system of the building adopts the thermal insulation material with the burning performance of B1 and B2 grades, the horizontal fireproof isolation zone made of non-combustible materials shall be arranged along the floor of each layer of the thermal insulation system, and the installation height of the isolation belt shall not be less than 300 mm, and It is densely bonded to the entire area of the building's exterior wall. When the roofing and exterior insulation system of the building adopts the insulation materials with B1 and B2 combustion properties, it is also necessary to check whether the fireproof isolation belt made of non-combustible materials is provided at the outer wall and the roof separation, and the width shall not be less than 500mm.
4. Fireproof sealing at each floor
The cavity between the external thermal insulation system of the building and the base wall and the decorative layer is sealed with fireproof sealing material at each floor to prevent the rapid development of the fire due to the chimney effect.
5. Installation of electrical lines and electrical accessories
Electrical circuits shall not pass through or be laid in insulation materials with a burning performance of Class B1 or Class B2; for those that must pass or lay, use metal pipes and aerogel incombustible insulation materials around the metal pipes for fire protection and other fire protection Measures. Set aerator, socket and other electrical accessories around the parts to take aerogel non-combustible insulation materials for fire protection and other fire protection measures to prevent fires caused by long electrical age, insulation aging or overload operation.