Fire extinguishers can be said to be the most important equipment for fire safety at each gas station. However, hose burst frequently during use, which not only affects the normal use of fire extinguishers, but also indirectly creates safety hazards. Therefore, we need to keep an eye on the maintenance of the hose and not to slack off. There are several reasons for hose damage:
First, the service life is too long, the pvc dry powder hose is aging. People often pay attention to the replacement of dry powder and ignore the service life of the hose. In general, cart-type dry powder fire extinguishers have a life span of 8 to 10 years, while hoses and small parts are not available for such a long time. Under good storage conditions, the rubber hose can be used for 6 to 8 years, and the rubber inner rubber hose ends its service life for about 4 years.
Second, the spray gun did not open, causing excessive pressure inside the hose.
Third, the gun mouth is blocked. It may happen that the spout is blocked by the spray head when the fire drill is performed, and the belt is closed after the drill.
Fourth, the hose did not stretch. Folding or twisting does not allow the dry powder to spurt out smoothly.
5. The storage temperature is too high and the service life is shortened. Regardless of the rubber hose or the rubber inner wall rubber hose, the higher the temperature of storage, the faster the aging.
As a professional fire extinguisher hose supplier, please share the issues you need to pay attention to during the maintenance of fire extinguishing equipment. In general, maintenance is carried out according to the material, use characteristics and environmental conditions of the fire-fighting equipment.
First of all, to determine the service life of the fire extinguisher, usually said 10 years, mainly refers to the service life of the tank. The working pressure gauge should be inspected once every six months. If the gauge pressure is lower than the green zone, it should be sent for repair immediately. Hydrostatic testing should also be carried out 2 to 3 years or before filling.
Secondly, according to the use of the years, the pvc dry powder hose is stronger than the rubber inner wall rubber hose, and it is not easy to burst. Therefore, this issue should be considered when purchasing or changing hoses.
Third, after training and changing the dry powder, the hose should be collected according to the specifications, and check whether there is any foreign matter jam at the gun mouth to keep the muzzle clean and unobstructed.
Fourth, anti-sun, rain, weatherproof. On the basis of keeping it convenient to use, fire-fighting equipment should be built with heat-proof, sun-proof, moisture-proof, rain-proof and wind-proof equipment sheds to delay the aging and corrosion speed.
Fifth, each time the fire extinguisher is used, it must be sent to the unit with the maintenance permit to inspect, replace the damaged parts, refill the fire extinguishing agent and drive the gas; whether the fire extinguisher has been used or not used, must be sent for maintenance when the specified time limit is reached. The unit carries out a hydrostatic test. If it is found that the appearance meets the scrapping conditions, it must be disposed of as waste.