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09/15

Flammable substances. Any substance that can react violently with oxygen or other oxidants in the air is usually called flammable substance. For example: wood, paper, gasoline, alcohol, hydrogen, sodium, magnesium, etc.

09/15

According to Article 7.6 of the national standard GB4351.1 Handheld Fire Extinguishers - Part 1: Performance and Structural Requirements, the operating mechanism of fire extinguishers - pressure lifting handle and safety pin must undergo impact test. At present, domestic equipment manufacturers and inspection and testing institutions conduct impact tests on the operating mechanism of fire extinguishers, using manual testing.

09/15

When in use, the fire extinguisher with hand or shoulder can quickly reach the fire scene, and put down the fire extinguisher at a place about 5m away from the combustor. 2. When putting out the fire, first pull out the safety pin and turn the spray elbow with one hand. If there is a spray hose, hold the wooden handle at the root of the spray hose, aim the spray hose at the fire source, lift the fire extinguisher with the other hand, and press down the handle. Liquid carbon dioxide is immediately ejected and rapidly evaporated under high pressure.

09/15

Disposable pressure storage fire extinguisher (hereinafter referred to as fire extinguisher) can be moved at will. The filling amount of fire extinguishing agent is less than 1000mL (or g), which can be opened by one finger and cannot be refilled. 2.灭火器的落地、支架、挂钩等设置是否符合配置设计要求。便携式灭火器的挂钩和支架安装后能否承受一定的静载荷，无松动、脱落、断裂和明显变形。 灭火器的铭牌是否朝外，器头应向上。 4.灭火器的类型、规格、等级和配置数量是否符合配置设计要求。 5.灭火器配置场所的使用性质，包括可燃物的类型和物态，是否发生变化。 6灭火器是否符合送修条件和维修期限。 7灭火器是否符合报废条件和期限。 8室外灭火器是否有防雨、防晒等保护措施。

09/15

As a relatively common fire fighting equipment, enterprises, units and families will buy fire extinguishers, but do not think that buying a fire extinguisher is all right. If the fire extinguisher is not repaired and functional inspection is not carried out in time, it will be used in an emergency when the fire extinguisher is needed, resulting in the expansion of the fire, or even the inability to use, resulting in the expansion of the fire and casualties.

09/15

It should be operated by two people. When using, the fire extinguisher should be quickly pushed or pulled to the fire site and stopped at a place about 15 meters away from the fire point (when used outdoors, it should occupy the windward direction). A firefighter should spread the spray belt in the direction of the fire (do not twist or place the fire extinguisher), hold the spray gun with both hands, make it aim at the root of the fire, stand towards the fire, and then another firefighter can open the fire extinguisher switch to spray.

09/15

Compared with other traditional fire extinguishers, portable dry powder fire extinguishers still have great advantages. However, you must use the correct method when using it.

09/15

The fire extinguisher shall be inspected by the technical inspection department of the manufacturer to ensure that the quality of the fire extinguisher meets the requirements of this standard. Type test, import and export test and arbitration test shall be conducted according to the test methods specified in this standard. The method of GB/T4351.3 shall be evaluated according to the sampling and inspection results of fire extinguishers.