Abstract:

The influence of cylinder volume and equipment mass on the service time of self- contained breathing apparatus (SCBA) was studied. Physiological index and gas consumption rate of 4 different volume positive pressure air breathing apparatus worn by firefighters were tested, and the service time of SCBA was calculated while fire fighters working under different work intensity, to provide reference for the performance improvement of SCBA, and to provide ideas for the development of new firefighting equipment.

Key words: self- contained breathing apparatus, pressure vessel volume, service time