Self-contained breathing apparatus (SCBA) or CABA with a demand valve full-face mask

SCBA is highly specialised equipment. The wearers require high levels of training for safe use
SCBA is fitted with a full face mask and a demand valve to provide a small positive pressure inside the mask
A 'Demand valve' is designed to provide air flow as demanded by the wearer
The BA can be cleaned and reused many times, as recommended by the manufacturer
It may be worn continuously for more than 1 hour
SCBA is suitable for use in oxygen deficient atmospheres, and in harsh and demanding environments
It is used for short term work such as work in tanks, trenches and sewers
Precautions and safety procedures are required for safe use. These come with training, experience and knowledge of the harsh environment
This BA is OK for medium work rate (work involving sustained hand and arm movements, or similar to brisk walking)
It is also OK for a heavy work rate (heavy manual work requiring a lot of exertion and energy)

Establish the time limit - the duration for safe use
Set up a reliable system for communication
Set up a check-out and check-in procedure for SCBA
Select the right size mask for each wearer. Fit-testing for each wearer is required when using this RPE for the first time
Fit the straps as recommended
Ensure that wearers check the RPE fits correctly every time, as recommended by the manufacture
Ensure that the compressed air quality meets the minimum requirements of BSEN12021

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