66 kinds of kitchen fire extinguishing equipment used with care

The fire is merciless. A large number of fake and inferior fire protection products flood the circulation field, so that we still fail to truly prevent problems before they happen. In order to further crack down on illegal acts of counterfeit and inferior automatic kitchen fire extinguishing equipment, recently, the Hubei Provincial Public Security Fire Brigade announced the first batch of unqualified fire protection conditions in the province.

It was learned from the Hubei Provincial Public Security Fire Brigade that since the “11.5” mobilization meeting for the province’s fire protection product survey and rectification in the province last year, fire supervision agencies at all levels have conscientiously implemented the State Council’s Work Safety Commission’s Plan for Centralized Development of Fire Hazard Survey and Rectification Work. In accordance with the spirit of the Ministry of Public Security's "Notice on Doing a Good Job in the General Investigation and Rectification of Fire Products" and other documents, we comprehensively strengthened the supervision and management of fire products, and promptly discovered and investigated a large number of counterfeit and inferior fire products. In order to optimize the market environment of fire protection products, the province announced the inspection status of fire protection products, and a total of 66 products were classified as unqualified products.

In order to facilitate local fire supervision departments and construction design, fireproof building materials production, sales, and use departments to correctly identify fake and inferior firefighting equipment, experts provide several simple identification methods:

1. Direct observation method. Many fire-fighting products can be directly identified from their appearance and their quality is inferior. For common indoor fire hydrants, the valve stem must be made of lead brass, and the valve seat and stem nut must be made of 38 brass; the rim of the handwheel should be clearly cast with arrows and words indicating the direction of the switch, and the surface of the casting should be There should be no defects such as scars, burrs, cracks and shrinkage holes; the external paint film should be smooth, flat, consistent in color, free of bubbles, flow marks, wrinkles and other defects, and no obvious bumps, scratches, etc. As for the magnesium FRP ventilation ducts with fireproofing, smokeproofing properties, and hot air rooms in industrial and civil buildings, although its non-combustibility can usually meet the standard requirements, the corresponding tensile, compressive, and bending strengths are sometimes not If it is found that the material of the air duct is relatively loose, the surface has obvious layering phenomenon, and the situation of brittleness, fragmentation, and cracking caused by hand bending, it can be preliminarily determined that the material is a fake and inferior product. In addition, whether there is a sealing groove at the overlap between the door frame of the wooden fire door and the door leaf, and the sealing strip made of non-combustible material is inserted; whether the shell of the emergency lighting lamp is made of PVC material, if it is used, the material is Does not meet the requirements, and its oxygen index does not meet the standard requirements.

2. Field test method. For wire and cable casing plastic materials, foam plastics for pipe insulation, etc., according to the national standard "Classification Method for Combustion Performance of Building Materials", in different applications, they can be classified into Class Bl (flammable materials) and Class B2 ( Combustible materials). The related requirements of the oxygen index must be greater than 32 (B1 level) and 26 (B2 level). The oxygen concentration in the air that maintains the continuous combustion of the material is generally around 21. During identification, the material can be ignited directly. If it can continue to burn, it means that the oxygen index of the material is lower than 26, and it can be preliminarily determined that the material does not reach the B2 level (combustible material). Similarly, this method can also be used when inspecting fire extinguishers. National standards stipulate that for portable dry powder fire extinguishers over 2kg, the spray time should not be less than 8s, the spray distance should not be less than 3 m, the spray lag time should not be more than 5 s, and the spray remaining rate should not be more than 15%. For portable 1211 fire extinguishers and portable carbon dioxide fire extinguishers, the spray time shall not be less than 8s, and the spray distance shall not be less than 3m and 1.5m. Through the on-site spray test, it can be immediately judged whether the fire extinguisher is qualified.

3. The overall judgment method. For fire-fighting equipment products such as fire hydrant boxes, the national standard stipulates that they must be sold in whole boxes and must not be assembled. During the inspection, one can observe the overall structure of the bolt box, such as whether the thickness of the door glass of the bolt box is less than 3 mm; whether the switch nozzles, reel shafts, elbows and water system components of the fire hose in the box are made of copper Made of alloy or aluminum alloy materials; the second is to check the length of the hose, because the standard length of the fire hose is 20+0.20m, and the standard length of the hose in the fire hydrant box is 25 m. At present, the 20m hose is directly assembled in the market. The situation in the box is very serious.