Emergency response measures for fire accidents in

Emergency response measures for fire accidents in hazardous chemical enterprises

hazardous chemicals are prone to fire and explosion accidents, but when different chemicals and fires occur under different circumstances, their extinguishing methods vary greatly. If handled improperly, it will not only not effectively extinguish the fire, but also further expand the disaster. In addition, most of the chemicals themselves and their combustion products are highly toxic and corrosive, which is very easy to cause poisoning and burns. Therefore, fighting the fire of dangerous chemicals is an extremely important and dangerous work

in case of fire, every employee should clearly know their roles and responsibilities, and master the use methods of fire-fighting facilities, personnel evacuation procedures and special requirements for fire-fighting of dangerous chemicals

1. fire fighting countermeasures

(1) put out the fire of wear-resistant parts used in household appliances at the initial stage

① quickly close the upstream and downstream valves of the fire parts and cut off all materials entering the fire accident site

② before the fire has expanded beyond control, mobile fire extinguishers or other fire-fighting equipment and equipment on site should be used to extinguish the initial fire and control the fire source

(2) take protective measures

③ some fires may cause the outflow of flammable liquids. At this time, sandbags or other materials can be used to build embankments to intercept the flowing liquids, or ditches can be dug to guide the materials to a safe place

never act blindly to put out the fire of dangerous chemicals. For each type of chemicals, choose the correct extinguishing agent and extinguishing method to control the fire safely. The fire fighting of chemical fires should be carried out by professional fire brigade. Other personnel should not act blindly. After the fire brigade arrives, introduce the material medium and cooperate with the fire fighting

2. basic countermeasures for extinguishing compressed or liquefied gas fires

compressed or liquefied gas is always stored in different containers or transported through pipelines. Among them, the zigzag testing machine of Jinan new era Gold Testing Instrument Co., Ltd. is equipped with an operation manual. The gas stored in a smaller cylinder has a high pressure, and it is easy to burst when heated or smoked by flame. When the gas leakage meets the fire source and forms stable combustion, the risk of explosion or re explosion is much smaller than that of unburned combustible gas leakage. In case of compressed or liquefied gas fire, the following basic countermeasures should be taken generally

(1) to put out gas fires, do not put out the fire blindly, and keep stable combustion without taking leakage stoppage measures. Otherwise, a large amount of combustible gas will leak out and mix with the air, and the explosion will occur when encountering the fire source, and the consequences will be unimaginable

(2) first of all, put out the combustible fire ignited by the fire source in the periphery, cut off the spread path of the fire, control the combustion range, and actively rescue the injured and trapped personnel

(3) if there are pressure vessels in the fire or pressure vessels threatened by flame radiant heat, those who can evacuate should be evacuated to a safe area under the cover of water guns as far as possible, and those who cannot evacuate should be deployed with enough water guns for cooling protection. In order to prevent the explosion of the container from injuring people, the cooling personnel should try to use low posture water shooting or use a solid shelter on site for protection. For horizontal storage tanks, the cooling personnel should choose the four side corners of the tank as the water shooting position

(4) if the gas transmission pipeline leaks and catches fire, try to find the air source valve. When the valve is in good condition, the fire will be extinguished automatically as long as the inlet and outlet valves of the gas are closed

(5) when the closing valve of storage tank or pipeline leakage is invalid, it should be judged according to the fire that the fine spherical aluminum powder at the high end of the gas pressure benefits from the encouragement and promotion of the policy and the size and shape of the leakage port, and the corresponding plugging materials (such as cork, rubber plug, airbag plug, adhesive, elbow tools, etc.) should be prepared

(6) after the leakage stoppage work is ready, you can use water to put out the fire, and also use dry powder, carbon dioxide, halogenated alkanes to put out the fire, but you still need water to cool the scalded tank or pipe wall. After the fire is extinguished, the leakage shall be stopped immediately with plugging materials, and the leaked gas shall be diluted and dispersed with foggy water at the same time. If it is confirmed that the leakage port is very large and cannot be stopped at all, it is only necessary to cool the fire container and its surrounding containers and combustible materials, and control the fire range until the fuel gas is burnt out and the fire is automatically extinguished

(7) the on-site commander should pay close attention to all kinds of dangerous signs. In case of explosion signs such as the flame of the container safety valve that fails to recover stable combustion or heated radiation for a long time after the fire is extinguished, the commander must make an accurate judgment in a timely manner and issue a withdrawal order in a timely manner. After the on-site personnel see or hear the predetermined evacuation signal, 5 Our company is responsible for providing users with after-sales value-added services such as technology upgrading and transformation at preferential prices all their lives. We should quickly retreat to a safe area