How to use an firefighting foam water cannon

Preparation:

Wear PPE (helmet, fire-resistant suit, gloves, SCBA).

Confirm foam concentrate type (AFFF, Class B) matches the fire (e.g., fuel, chemicals).

Connect the cannon to a water supply and foam proportioning system (inline or around-the-pump).

Operation:

Open water supply; adjust pressure per manufacturer specs.

Engage foam injection system to mix concentrate with water (typically 1–6% ratio).

Aim cannon at the fire's base, not flames, to smother with foam. Use a sweeping motion for coverage.

Maintain a safe distance (follow thermal radiation guidelines).

Post-Use:

Flush the system with clean water to prevent residue buildup.

Inspect cannon/nozzle for damage; replenish foam concentrate.

Key Tips:

Train regularly on foam types/proportions (misuse reduces effectiveness).

Test systems monthly; comply with NFPA 11/16 standards.

For large-scale fires (fuel tanks, aircraft hangars), coordinate with teams for full foam blanket coverage.

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