Tianjin Municipal Public Security Bureau Fire Department Approval Certification License Fire Extinguisher Testing and Dressing Replacement Annual Inspection Qualification Institution

How to use a portable dry powder fire extinguisher
Dry powder fire extinguishing agent is a dry and easy-flowing fine powder used for fire extinguishing. It is composed of inorganic salts with fire extinguishing effect and a small amount of additives after drying,
crushing,
Mixed to form a fine solid powder composition.
It is a fire extinguishing agent widely used in
firefighting, and is mainly used in fire extinguishers.
In addition to special dry
chemical fire extinguishing agents for metal fires, dry powder fire extinguishing agents are generally divided into two categories:
dry powder fire extinguishing agents and
dry powder. Dry powder fire extinguishing agent mainly extinguishes fire through the physical and chemical effects that occur when the powder mist sprayed under the action of pressurized gas contacts and mixes with the flame.
The correct way to use a portable dry powder fire extinguisher is
When using a portable dry powder fire extinguisher, you should carry the handle of the fire extinguisher and rush to the fire quickly.
Put down the fire extinguisher about
meters away from the fire. When used outdoors, it should occupy the upwind direction.

Before use, turn the fire extinguisher upside down several times to loosen the dry powder in the cylinder.

When using a built-in or storage-pressure dry powder fire extinguisher,
you should first pull out the safety pin,
hold the nozzle with one hand,
apply force with the other hand Press the handle and the dry powder will spray out from the nozzle.

When using a dry powder fire extinguisher to extinguish a stray liquid fire,
it should be sprayed from the side of the flame,
aimed at the root of the flame,
and from near to far, sweeping left and right, and advancing quickly , until all the flames are extinguished.
When using a dry powder fire extinguisher to put out a flammable liquid fire in a container, you should also aim at the root of the flame from the side of the flame
and sweep left and right. When the flame is driven out of the container, move forward quickly to extinguish all remaining fire. When extinguishing a fire, be careful not to point the nozzle directly at the liquid surface to spray,
to prevent the impact of the dry powder airflow from splashing the oil,
causing the fire to expand
and making it difficult to put out the fire. .
When using a dry powder fire extinguisher to extinguish a solid material fire, the nozzle of the fire extinguisher should be aimed at the most violent burning point,
spray left and right,
and the amount of dry powder fire extinguishing agent should be sprayed evenly on the burning object. surface,
until the fire is extinguished.