Definition & Operational Usage of Flow Path Control
What Is Flow Path Control?
Flow path control is the active tactical practice of manipulating intake and exhaust openings — using door control, curtain barriers, and timed ventilation — to restrict air entrainment into a ventilation-limited fire and prevent hot gas movement toward search or entry paths.
Why Flow Path Control Matters on the Fireground
Controlling the flow path prevents oxygen from triggering rapid fire growth or flashover. Keeping the front door choked or using a smoke curtain keeps hallway temperatures manageable and protects interior search crews.
Relevant NFPA Standards
- NFPA 1010: Standard on Professional Qualifications for Firefighters
- NFPA 1550: Standard for Emergency Responder Health and Safety
Field Procedures & Tactical Steps
- Assign a door control firefighter to hold the entry door closed after forcing entry until the hose line is charged.
- Deploy a temporary smoke curtain in the doorway to limit air intake while allowing hose line advancement.
- Coordinate all exterior glass breaking and roof ventilation with the interior attack crew officer.
- Cool the hot upper gas layer with short bursts of water prior to opening doors wider.
- Maintain door control continuously until main fire knockdown is accomplished.
Common Context & Application
Executed by first-due entry teams, door control firefighters, and vent crews on all compartment structure fires.
Frequently Asked Questions about Flow Path Control
What is a smoke curtain used for in flow path control?
How does uncontrolled ventilation impact an interior fire?
Other Names for Flow Path Control
Flow Path Control may also appear in training materials, NFPA standards, or department SOPs as: heat management, smoke control, tactical ventilation.
Relevant Tools
Operational calculators related to Flow Path Control: