Fire door is a door that can meet the requirements of fire stability, integrity and heat insulation within a certain time. It is located in the fire zone, the evacuation stairwell, vertical shaft and so on have certain fire resistance fire separation. In addition to the ordinary door, fire door has the effect of preventing the spread of fire and the diffusion of smoke. It can prevent the spread of fire and ensure the evacuation of people.

    However, the reporter accompanied the jinan fire brigade in the inspection of the fire door of the legal appraisal agency, found that some fire doors have no fire prevention board, some fire resistance time is not enough. Firefighters are also warning people to see if fire doors are up to standard.

    12 temperature probe for identification.

    There are various types of fire doors in the market, but the quality of fire doors is uneven. Jinan public security fire control team in fire engineering department section chief hong-tao zhang told reporters that the building before delivery, all must carry on the fire control acceptance, acceptance of the fire door is an acceptance of the work is important. "In the process of supervision and inspection, the fire door will be sampled. After taking samples, send them to the statutory testing agency for testing. Zhang told reporters.

    Yesterday morning, the reporter came to a statutory testing agency, zhang hongtao told the reporter the whole process of fire door detection.

    Detection technology staff, told reporters that accept detection is a class a fire door, "according to the fire resistance and heat insulation performance, class a fire door refractory not less than 1.5 hours, class b fire door refractory not less than 1 hour, class c fire door not less than 0.5 hours."

    Fire door is mounted on a test device, from the door using gas ignition, door installed on 12 thermal probe, through temperature testing, "general whole heat the highest temperature of 140 degrees Celsius, single point of maximum heat temperature of 180 degrees Celsius."

    In addition to heat insulation, the integrity of fire doors is another measure.

    Some doors are "deformed" in less than an hour

    On the test equipment, the reporter saw that at the beginning of the test, the temperature in the furnace reached 64 degrees Celsius, and the smoke gradually leaked through the crack in the door. The technician told the reporter that the smoke could not prove that the fire door was unqualified and that other indicators should continue to be tested.

    The temperature in the furnace reached 850 degrees Celsius in 41 minutes. At this time, the situation of smoke leakage is obviously aggravated, but there is no open flame. Technicians told reporters that the temperature in the furnace was rising according to the prescribed curve, with the highest temperature reaching 986 degrees Celsius.

    At 65 minutes, the technician used a probe, moving at the crack, moving more than 150 mm. The technician told the reporter that the fire door was not qualified. "In accordance with the regulations, this type of fire-resistant door fire door can be fireproof for an hour and a half." Technicians told reporters.

    There is no fire board in the wood fire door.

    Zhang also showed reporters a simple way to test wood fire doors.

    Inside the testing facility, a reporter saw a wooden fire door cut open in a corner. Zhang hongtao tells the reporter, the filling in the wooden fire door inside, the right and left side should have a white fire prevention board, these two layer fire prevention board directly affects fire prevention performance of fire door. Some manufacturers cut corners, without adding these two layers of fire prevention boards, which are invisible to the outside.

    In the unqualified wooden fire door, hong-tao zhang also shows no encryption seals to the reporter, "fire smoke is the main door sealing strip at work, if there is no sealing strip, is basically can't smoke." "See whether fire door is qualified, also can see door handle material, door handle if it is steel, general fire resistance performance is better, not easy to be burned. And if it's made of aluminum, it's very easy to burn." Zhang hongtao introduces.

    A fire extinguisher can tell the quality.

    Besides the fire door, the quality of fire fighting equipment such as fire hydrant and fire extinguisher also has important influence on the initial disposal of fire.

    According to zhang hongtao, the inside of the internal fire hydrant is generally made of copper, not easy to rust, and the stem should be copper. If it is rusty, it is difficult to open when used.

    "There are some unqualified indoor fire hydrants, the materials used are aluminum alloy, the density of aluminum alloy is not up to the requirements, it is easy to break, and also affects the use of fire hydrants." "Said zhang.

    There are a lot of fire extinguishers with quality problems, and the public can distinguish them by appearance. "the first is to look at the manufacturer, the factory date and the certificate of qualification. Secondly, if the indicator of the pressure gauge of the fire extinguisher is in the green area, if the pressure exceeds the normal value in the yellow area, the pressure is insufficient in the red area. In addition, whether the powder tube is aging, whether the fire extinguisher has a large area of paint on the outside can judge whether the fire extinguisher can be used normally.

    In addition, the heat insulation plate, density board will make the necessary testing, "general within the furnace combustion after ten minutes, see one metre long insulation board and the degree of carbonization of density board, if there is no carbonization of more than 150 mm in length, is determined to be qualified. On the contrary, it is the unqualified product. The technician told the reporter.