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Fire detection

I. Qualification

(I) Qualification level: Level 1 for maintenance inspection of fire protection facilities, CMA qualification certificate

(II) Business scope: It can undertake the inspection, repair and maintenance of the building fire protection facilities of various types of buildings.

(3) Service content:

1. Fire-fighting facility testing: Building fire-fighting facility testing is an important means of fire safety inspection of buildings (structures) commissioned by the government with correspondingly qualified fire-fighting testing technical service agencies. Through equipment testing, inspection and other technical means, the safety status of key fire safety units can be quantitatively analyzed, and the energy utilization status of key fire safety units can be evaluated in accordance with relevant national fire safety regulations and technical standards. Suggestions for handling violations of fire safety have strengthened government supervision of key units of fire safety.

Test contents include: automatic fire alarm system, automatic sprinkler system, hydrant fire extinguishing system, smoke prevention and exhaust system, fire door system, fire shutter door system, fire emergency broadcasting system, emergency lighting safety evacuation indication system, fire power supply, fire elevator, fire protection Control equipment linkage system, gas fire extinguishing system, foam fire extinguishing system.

2. Electrical testing: For commercial, office buildings, hotels, restaurants, culture and entertainment, industrial and mining enterprises, stations, airports, exhibitions and exhibitions, political activities and other public gathering places, flammable and explosive places, and other places identified by public security fire agencies Regular inspection of electrical safety of electrical installations; completion inspections and special inspections of new construction, expansion, reconstruction, interior decoration and change of use projects. The tests include:

(1) Transformer and power distribution equipment: temperature of transformer connection point, core temperature of dry-type transformer, bus connection. Contact temperature and wire connection of circuit breakers, knife switches, and transformers in low-voltage power distribution cabinets. Installation of wiring and installation of lamps in high and low voltage distribution rooms. Material of distribution box and inlet and outlet protection. Material of cable trench cover. Whether the holes in the power distribution room are blocked and whether the holes in the shaft are blocked. Whether the upper and lower appliances match.

(2) Line laying: Whether the laying wiring is standardized. Whether the concealed line runs through the tube. Laying the line inside the stuffy roof. Temporary line. Whether the line is aging or damaged. Installation of lighting fixtures, switches and sockets. Installation of sockets, lamps and switches. Is there a special box for the installation of sockets, lamps and wall lamps.

(3) Ballast temperature.

(4) Other items required to be tested.

3. Testing of fire-resistant coatings on steel structures:

(1) Stylus and test chart: The stylus (thickness measuring instrument) is composed of a needle bar and a slidable disc. The disc is always perpendicular to the needle bar and is equipped with a fixing device. The diameter of the disc is not greater than 30mm to ensure full contact with the surface of the test piece. If the thickness gauge cannot be easily inserted into the inserted material, other suitable methods can also be used for testing. During the test, the thickness-measuring probe (see Figure 4.1) is inserted vertically into the fire-resistant coating until the surface of the steel substrate, and the scale reading is recorded.

(2) Selection of measuring points: 2.1. The thickness of the fire-resistant coating of the floor and the firewall can be determined by selecting the area where two adjacent longitudinal and horizontal axes intersect as a unit. On its diagonal, choose one point per meter of length. test. 2.2 Determination of the thickness of fire-resistant coatings on beams and columns of all-steel frame structures. Take a section every 3m within the length of the component. 2.3 For truss structure, the upper and lower chords shall be inspected at a section every 3m according to the provisions of the second article, and the other web members shall be inspected at each section.

(3) Measurement results: For floors and walls, at least 5 points were measured in the selected area; for beams and columns in the selected positions, 6 and 8 points were measured, respectively. Calculate their average respectively.

4. Fire blocking test:

The inspection contents include: whether the project construction meets the design requirements:

The through-holes and empty openings on the penetration must be fire-blocked. The building gaps in the building must be closed by fire-blocking materials. Whether the fire blocking materials meet the requirements. The materials used shall have a certificate of delivery from the factory. Whether the use of materials and equipment complies with the manufacturer's operating instructions. Building gaps and different through-openings should be blocked with different materials and in different ways. Visual inspection of construction site, etc. The appearance of fire plugging should be neat and tidy. The cables from the transformer room to other power distribution devices should pass through the partition walls, holes, and openings of the cable structure. The testing of cable holes and bridges is tight and reliable, and there should be no obvious cracks or visible gaps. The larger holes should be blocked by refractory boards. Check the tightness of the fire door on the fire blocking wall, block the holes, and check whether the fire blocking measures of the cables on both sides of the fire blocking wall meet the requirements. Construction gaps should be tightly sealed with fire-blocking materials over the entire gap length in accordance with the installation instructions for the corresponding product. After installation, the fire-blocking materials should be firmly bonded and not fall off. If necessary, a destructive collection sample test may be performed. After the destructive inspection is completed, the damaged through-holes or building gaps shall be repaired as required. For larger projects, statistical sampling methods are needed. After the test is completed and meets the requirements, a "Building Fire Block Test Report" will be issued within three days.

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