Safety, Fire & Survival · Fire — Oxygen-Enriched Atmosphere Hazard
An oxygen-enriched atmosphere (above the normal 21%) is dangerous because it:
- AIs safe for hot work
- BCannot support combustion
- CGreatly increases the intensity and ease of ignition of fires, even of materials that normally burn slowly✓ Correct
- DReduces fire risk to zero
Explanation
Excess oxygen makes fires ignite more easily and burn far more fiercely; oils, clothing, and hair can flare violently. Oxygen enrichment (e.g., a leaking oxygen line) is as serious a hazard as a flammable atmosphere, and ignition sources must be eliminated.
Authority: Enclosed-space/atmosphere safety references
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