How does breathing apparatus work

Vehicles and equipment. Breathing Apparatus BA. Breathing Apparatus BA helps us to work in places where the air isn't breathable.

Breathing apparatus is a key piece of equipment for firefighters across the world. When do firefighters use breathing apparatus? How much air does a BA set hold? How do you keep track of everyone using BA? Fire escape hoods. Incident Command. Aerial Appliances.

Mainly it is used where a filter mask or powered air filter system is not suitable, but sometimes other factors are involved. Escape Breathing Apparatus is used for self-rescue from an environment that has become hazardous after entry into it. The most common example of this in-use is in a confined space where there is no immediate danger from gas or oxygen deficiency but the risk of that danger remains, and so an Escape BA set is carried enabling the user to don the set and rescue themselves from a hazardous environment.

An Escape Set consists of a small compressed air cylinder, either 2. Escape Sets are usually supplied with either a positive pressure close-fitting face mask or with a loose fitting hood. Regular users of full face masks will usually prefer the comfort and familiarity of a close-fitting face mask, whilst irregular users will find the loose fitting hood easier to don in an emergency situation.

It is worth noting as well that a loose fitting hood accommodates users with facial hair and glasses. One user we will all recognise is the Fire Services, who use SCBA to enter areas where smoke and noxious gases are present, but SCBA is used in many entries where there is a toxic gas, asphyxiate or oxygen deficient environment. A SCBA set consists of 3 main components — a cylinder of compressed air, a back-plate that holds the cylinder and reduces the air from high pressure bar to medium pressure bar and this in turn supplies a face mask.

Self-Contained BA gives autonomy to the user, meaning that they can move around freely as opposed to being attached to an airline. However, the disadvantages are that the cylinder has a relatively short supply time, for example a 9. This mechanism enables for long time use. History Contact us Where to buy. The SCBA supplies the compressed air from the air cylinder to the wearer through cylinder valve, pressure reducer, pressure demand valve or demand valve.

The SCBA supplies the compressed oxygen from the oxygen cylinder to the wearer through cylinder valve, pressure reducer, demand valve, etc.