NFPA 10 Fire Extinguisher Inspection Guide

What is NFPA 10?

NFPA 10 is the Standard for Portable Fire Extinguishers published by the National Fire Protection Association. It establishes requirements for the selection, installation, inspection, maintenance, recharging, and testing of portable fire extinguishers. It is a key reference for fire protection contractors, building owners, and authorities having jurisdiction.

The current edition referenced in this guide is NFPA 10 (2022). States and local jurisdictions may adopt different editions, so verify the applicable edition and requirements with the local Authority Having Jurisdiction (AHJ).

NFPA 10 inspection and maintenance schedule

NFPA 10 distinguishes routine visual inspections, annual maintenance, and additional internal or pressure-test work. The inspection frequency guide has the detailed timing; the summary below keeps this pillar focused on how the standard fits together.

1. Monthly Visual Inspection

Typically performed every 30 days by the building owner or designated employee, subject to the adopted requirements. The inspector checks:

• Extinguisher is in its designated location
• Access and visibility are unobstructed
• Pressure gauge reads in the operable range
• Safety seals and tamper indicators are intact
• No obvious physical damage, corrosion, or leakage
• Operating instructions are legible and face outward

2. Annual Maintenance Inspection

Typically performed every 12 months by a qualified fire extinguisher technician. It includes the applicable monthly checks plus:

• Service steps and any internal maintenance required for the extinguisher type and schedule
• Verification of hydrostatic test date
• Weight verification
• Check that extinguisher type matches the hazard in the area
• Inspection of mounting bracket and signage
• Complete documentation on the inspection tag

3. Internal Maintenance (6-Year and 12-Year)

Some stored-pressure extinguishers require an internal examination at a 6-year interval, while hydrostatic testing follows a type-specific interval. These services require trained personnel, appropriate equipment, and the procedure applicable to the cylinder. Confirm the exact date on the extinguisher and service record; see our hydrostatic testing guide.

Who must follow NFPA 10?

• Commercial building owners
• Property managers
• Fire protection contractors
• Facilities managers
• Safety officers

Requirements can be reviewed by the local AHJ and may also matter to insurers. OSHA requirements apply to covered workplaces; see the OSHA portable fire extinguisher standard for the federal workplace rule.

Fire extinguisher types covered by NFPA 10

NFPA 10 covers all classes of portable fire extinguishers:

• Class A: Ordinary combustibles (wood, paper, cloth)
• Class B: Flammable liquids (gasoline, oil, grease)
• Class C: Energized electrical equipment
• Class D: Combustible metals
• Class K: Cooking oils and fats (kitchen fires)

Consequences of non-compliance

Failure to maintain portable fire extinguishers according to the applicable requirements can create safety and documentation problems, including:

• Deficiencies identified during an AHJ or insurance review
• Potential OSHA issues for covered workplaces
• Increased liability exposure when equipment is not maintained or records are incomplete
• Corrective work, replacement, or reinspection requirements