SCBA (Self-Contained Breathing Apparatus):

 01. SCBA (Self-Contained Breathing Apparatus):

Definition: An independent breathing system where the user carries a tank of compressed air on their back.

Key Features:

Air Supply: Air is stored in a compressed air cylinder attached to the harness.

Portability: Fully portable; ideal for mobile tasks.

Duration: Typically provides air for 30–60 minutes, depending on the cylinder size and usage.

Mobility: The user can move freely without restrictions from hoses or connections.

Weight: Heavier due to the air cylinder being carried by the user.

Applications:

Confined spaces, Firefighting,Oxygen-deficient or toxic environments, Construction areas with mobile hazards.

Advantages:

Fully independent of external air sources.

Allows complete freedom of movement.

Ideal for environments with unknown or changing hazards.

Disadvantages:

Limited air supply.

Can be heavy and cumbersome for prolonged use.

2. SABA (Supplied-Air Breathing Apparatus):

Definition: A breathing system connected to an external air source through a long hose.

Key Features:

Air Supply: Air is supplied through a hose connected to an external air source (e.g., compressor or air cylinder).

Portability: Semi-portable; mobility is limited by the hose length (up to 300 feet in most cases).

Duration: Continuous air supply, as long as the external air source is operational.

Mobility: Limited by the length of the hose.

Weight: Lighter since the user does not carry an air cylinder.

Applications:

Extended-duration work in hazardous areas.

Tasks in confined spaces with sufficient ventilation but requiring a long air supply. Industrial cleaning and painting with toxic fumes.

Advantages:

Unlimited air supply (as long as the external source operates).

Lightweight and comfortable for extended use.

Suitable for stationary tasks.

Disadvantages:

Mobility restricted by the hose length.

Requires a reliable external air source.

Hose can get tangled or damaged, posing a safety risk.