Closed-circuit
The closed-circuit type, also known as a rebreather, operates by filtering, supplementing, and recirculating exhaled gas. It is used when a longer-duration supply of breathing … See more

There are two major application areas for SCBA: firefighting, and industrial use in confined spaces.
For firefighting, the design emphasis is on heat and flame resistance above cost. SCBAs designed for firefighting tend to be expensive because … See more

SCBA is intended to be personal protective equipment, but its use is not without cost. The weight of the unit and work of breathing affect the work capacity and agility of the … See more

42 CFR 84 replaces the 30 CFR 11 respirator regulation used by NIOSH. As of 2001, quality assurance of SCBA harnesses is … See more

SCBAs usually come with full-facepieces, but can also come with half-mask or mouthpiece in demand or pressure-demand mode, … See more

In the United States and Canada, SCBAs used in firefighting must meet guidelines established by the National Fire Protection Association, NFPA Standard 1981. If an SCBA is labeled as … See more

• NIOSH, regulator of SCBAs in the United States – US federal government agency
• Glossary of firefighting terms – List of definitions of terms and jargon used in firefighting
• Respirator – Device worn to protect the user from inhaling … See more