Air respirator maintenance

Air respirator is one of the “three major parts” of personal basic protective equipment used by fire fighters to enter fire, gas, dust, or oxygen-deficient environments to perform firefighting operations, rescue operations, and rescue operations. It has “the lives of fire fighters”. "Barrier" is called. With the continuous development of the social economy, various new types of fire accidents are also increasing. The disaster environment is complicated and the frequency of the use of air respirator is also increasing. According to the “Urban Fire Station Construction Standards” promulgated by the Ministry of Foreign Affairs, it is clearly defined. The first-line squadron on duty must meet the required number of equipment, and spare steel cylinders must be installed at a ratio of 1:1. However, in the daily management, the grass-roots squadron generally neglected the maintenance of air respirator. How to properly maintain and maintain the air respirator and give full play to its role is the key to the success of emergency rescue, especially chemical accidents. On the maintenance and maintenance of air respirators, talk about the following points:

First, the maintenance of the mask

The mask consists of a mirror, a mesh-like colloidal quick-fitting tether, a dual microphone, and an air supply valve connection.

1, the maintenance of the mirror, pay attention to friction and impact on the rough, hard material, to prevent the grinding of the mirror and affect the transparency and clarity and even damage.

2. Dressing (microphone, air valve connection) maintenance. The material of the dress strap is rubber. Usually, it should be tightened as required during wearing. It can't use too much force, and at the same time, it can prevent some corrosive substances from being damaged, and it can be found to repair in time.

3, microphone and air valve connection maintenance. Can not let some of the substances into the internal, plug holes and impact of the inside of the plastic material cracked and damaged, resulting in unclear conversation or connection with the gas valve is not solid.

The full-face mask should be disinfected with disinfectant after each use to avoid cross-contamination of various diseases. After drying, use a special cloth cover for storage.

Second, the back frame maintenance and maintenance

The back frame consists of backrests, shoulder straps, belts, gas cylinders and pressure reducers, medium pressure soft catheters, quick plugs, pressure gauges, alarm whistle and supply valves.

1, back care, shoulder straps, cylinders, maintenance of the belt. Handle gently when in use to prevent damage due to impact and rubbing with sharp objects. After each use, if it is soaked in water, it should be dried in a dry and ventilated place and avoid exposure. Keep the tightening straps in the maximum position during storage to ensure that the air breathing apparatus is better attached to the combatants.

2, the supply valve and medium pressure soft catheter maintenance. Its main function is to provide air to the user. The function of the gas supply valve is to open and close the gas supply valve. The function of the emergency discharge valve is to assist the supply of gas, in addition to the accumulation of fog and discharge of residual gas. When using, use the correct operation according to the operating requirements in the manual. Do not damage or lose the “O” ring of each connector. Do not expose it to sunlight and contact with corroded objects to avoid damage.

3, pressure relief valve, alarm whistle, quick plug and pressure gauge maintenance. Relief valve, alarm whistle, quick plug, must be carefully checked before and after use, view the device is intact, can not play its role, especially after being soaked in water, dry in a dry and ventilated place. For the quick plug, a certain amount of lubricant must be added to ensure that it is fully functional. The maintenance of the pressure gauge is also a check on the gas pressure of the cylinder. After the inspection, it is necessary to release the excess air to ensure that the pressure gauge and the medium pressure hose will not be damaged under the constant pressure; also Can't use it to measure the super value pressure, avoid overloading.

Third, the maintenance of compressed air cylinders and cylinder valves

1. The cylinder valve is used to control the components of the gas cylinder switch. It must be properly switched. Usually, a certain amount of lubricant must be added.

2, compressed gas cylinders are mainly used to store compressed air, there are two kinds of steel and carbon fiber. In the air should be noted that: the air can not exceed the rated safety air pressure, the air humidity can not be too large, can cause oxidation of the cylinder wall; when in use can not be violently collided with the sharp object friction, lightly lead to damage to the cylinder, while the Causes an explosion; if necessary, make a protective sleeve for the cylinder (especially carbon fiber cylinders) to prevent damage from abrasion. Steel cylinders should also be coated with a layer of anti-rust paint to avoid oxidation of the outside of the cylinder; gas cylinders filled with gas can not be stored in the sun exposure and high temperature, to avoid damage or cause baozha.

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