Definition & Operational Usage of Overhaul
What Is Overhaul?
Overhaul is the post-suppression fireground phase where firefighters open walls, ceilings, and void spaces to locate and extinguish hidden embers, verify complete extinguishment, and preserve origin/cause evidence.
Why Overhaul Matters on the Fireground
Incomplete overhaul leads to rekindled fires hours after companies clear the scene. However, overhaul is also the most hazardous phase for toxic chemical exposure (CO, HCN, carcinogens) and structural collapse due to weakened framing.
Relevant NFPA Standards
- NFPA 1010: Standard on Professional Qualifications for Firefighters
- NFPA 1550: Standard for Emergency Responder Health and Safety
Field Procedures & Tactical Steps
- Perform atmospheric air monitoring with multi-gas detectors before reducing PPE or removing SCBA.
- Scan walls, ceilings, door frames, and pipe chases with a Thermal Imaging Camera (TIC) to spot heat signatures.
- Open drywall and plaster with pike poles to expose smoldering studs and insulation.
- Apply targeted light hose streams or Class A foam to extinguish smoldering embers without causing excess water damage.
- Preserve suspected fire origin areas for fire investigators, avoiding disturbance of electrical outlets or burn patterns.
Common Context & Application
Executed immediately after main fire knockdown by truck and engine crews equipped with pike poles, TICs, and SCBA.
Frequently Asked Questions about Overhaul
Why is SCBA required during overhaul when visible smoke is gone?
What tool is most effective for finding hidden fire during overhaul?
Other Names for Overhaul
Overhaul may also appear in training materials, NFPA standards, or department SOPs as: post-fire inspection, fire suppression check, hot spot inspection.
Relevant Tools
Operational calculators related to Overhaul: