Safety, Fire & Survival · Fire — SCBA Duration
A self-contained breathing apparatus (SCBA) cylinder for firefighting typically provides a working duration of about:
- A30 minutes (with a low-pressure warning whistle before the air is exhausted)✓ Correct
- B5 minutes only
- C8 hours
- DUnlimited, since it filters the air
Explanation
A firefighting SCBA holds compressed air (commonly ~1,200 L) giving roughly 30 minutes of working duration depending on exertion, with an audible low-pressure warning before depletion. SCBA supplies independent air — unlike a filtering mask, it works in oxygen-deficient and toxic atmospheres.
Authority: SOLAS II-2; FSS Code (fireman's outfit)
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