3.1 Ventilation, Search, Rescue, and Overhaul
Key Takeaways
- Ventilation is a fire-control action and should be coordinated with suppression, door control, and command direction.
- Primary search is rapid and life-focused; secondary search is more thorough after conditions improve.
- Thermal imaging cameras support search and orientation but do not replace physical search discipline or team integrity.
- Overhaul must expose hidden fire while preserving scene evidence, respiratory protection, and structural awareness.
Tactical ventilation, life search, and overhaul
Ventilation is not a comfort task. It is a fire-control action that changes the flow path. On the exam, the safest answer is usually the one that coordinates horizontal, vertical, or positive pressure ventilation with a charged line, door control, and command approval.
| Operation | Exam focus | Watch for |
|---|---|---|
| Horizontal ventilation | Open or clear windows and doors near the fire area when coordinated with attack | Wind, uncontrolled flow paths, victims between fire and exit |
| Vertical ventilation | Release heat and smoke through roof or opening work | Roof stability, escape route, saw safety, command coordination |
| Positive pressure ventilation | Use fans to move smoke after an outlet is planned | Fire not controlled, wrong outlet size, crews inside flow path |
| Search and rescue | Rapid primary search, then more complete secondary search | Low visibility, missing egress, air management, team integrity |
Primary search is a rapid, life-focused sweep of likely victim areas: bedrooms, hallways, paths of exit, and rooms nearest the reported life hazard. A thermal imaging camera can help locate heat signatures, fire location, and exits, but it does not replace touch, orientation, and disciplined crew communication.
Vent-enter-search or vent-enter-isolate-search tactics are high-risk rescue choices. Departments vary on sequence details, but door isolation and coordination with suppression are exam-safe principles.
Overhaul begins after knockdown but before the scene is truly stable. Crews expose concealed spaces carefully, cool hidden fire, protect salvageable property where possible, and avoid destroying evidence of origin or cause. Keep PPE and respiratory protection in mind because overhaul can still expose firefighters to products of combustion, weakened materials, and sharp debris.
Use this decision order: confirm command objective, control air openings, search where survivability points first, maintain egress and crew contact, then find hidden fire without compromising safety or evidence.
A truck crew is ready to take fire-floor windows while the engine is still stretching. Which decision best reflects safe ventilation-search coordination?