Breathing apparatus is equipment that is designed to be used by rescue workers or firefighters in emergency situations to provide safe, breathable air. Being able to use breathing apparatus correctly requires specialised training. There are two types of breathing apparatus: open circuit and closed circuit. Closed circuit breathing apparatus work by recirculating and filtering exhaled gas.
They are useful for longer rescues, in mines and long tunnels.
They can be used underwater. Open circuit breathing apparatus uses compressed air from a tank worn on the back and delivers it to the user through a face mask. Breathing apparatus are typically used for fire fighting and in industrial situations. The breathing apparatus for fire fighting is designed specifically to be flame and heat resistant while also being light weight. The components of breathing apparatus are a high-pressure tank filled with compressed filtered air, a pressure regulator and an inhalation connection (mouth-piece or mask).
As previously mentioned, using breathing apparatus requires training. A breathing apparatus course should cover setting up, correct use, removing and cleaning and care of breathing apparatus, as well as identifying problems and faulty/damaged equipment.