Fire Extinguisher Inspection Requirements: NFPA 10 Checklist Guide

Why Fire Extinguisher Inspection Requirements Matter

Portable fire extinguishers are the most common piece of fire protection equipment in a commercial building, and the easiest to neglect. They hang on walls for years, get blocked by carts and furniture, lose pressure slowly, and quietly pass the dates when internal examinations or hydrostatic tests come due. The tags on each unit make any gap easy for a fire inspector, insurer, or surveyor to spot.

Two sets of rules drive fire extinguisher inspection requirements in most U.S. commercial facilities. NFPA 10, Standard for Portable Fire Extinguishers, covers how extinguishers are selected, installed, inspected, maintained, recharged, and hydrostatically tested, and becomes enforceable when a fire code, the Life Safety Code, or an accreditor adopts it. For workplaces, OSHA's rule at 29 CFR 1910.157 adds federal requirements for inspection, maintenance, recordkeeping, hydrostatic testing, and employee training.

This guide covers each interval from the monthly check to the 12-year hydrostatic test, who may perform each task, the tags and labels inspectors look for, and a printable-style checklist. Section numbers are given only where we could confirm them for a named edition, so confirm which edition your authority having jurisdiction (AHJ) enforces.

NFPA 10 Scope and Editions

NFPA 10 applies to the selection, installation, inspection, maintenance, recharging, and testing of portable fire extinguishers and Class D extinguishing agents. It does not apply to permanently installed extinguishing systems, even where parts of them (such as hose attached to a fixed agent supply) are portable.

Editions you may encounter include:

• 2010 edition -- Referenced by the 2012 edition of NFPA 101, Life Safety Code. The Minnesota Department of Health notes this is the edition that applies for federal (CMS) certification of health care facilities.
• Later editions (2018, 2022) -- May be adopted through state and local fire codes.
• 2026 edition -- The current edition. NFPA was already processing tentative interim amendments to it in fall 2025.

The core intervals -- monthly inspection, annual maintenance, periodic internal examination, and 5- or 12-year hydrostatic testing -- are consistent across these editions. Later editions refine details such as inspection timing, recordkeeping, and electronic monitoring, so check the wording in the edition your AHJ enforces.

Who Can Do What

NFPA 10 separates tasks by skill level:

• Monthly inspections can be done by facility staff. NFPA 10 states that persons performing inspections are not required to be certified.
• Maintenance and recharging must be done by a certified person. Certification means passing a test administered by an organization acceptable to the AHJ, and the certificate must be shown to the AHJ on request. Trainees may work under the direct supervision and in the immediate presence of a certified person. Technicians must also have the manufacturer's service manual, correct tools, recharge materials, and listed replacement parts.
• Hydrostatic testing must be done by people trained in pressure testing procedures and safeguards who have the proper equipment and service manuals. Recent editions also require hydrostatic testing personnel to be certified by an organization acceptable to the AHJ.

In practice, facility staff handle the monthly walk-through and a licensed extinguisher service company handles everything else. When a unit is removed for service, NFPA 10 requires immediate replacement with an extinguisher suitable for the hazard and of at least equal rating, and OSHA requires alternate equivalent protection. Ask your vendor to bring loaners rather than leaving empty brackets.

Monthly Inspection Requirements

Extinguishers must be inspected when first placed in service and monthly after that. The Minnesota Department of Health summarizes the 2010 edition as requiring inspection at least monthly, at a minimum of 30-day intervals. The more recent text, as reproduced in NFPA's revision documents for the 2026 cycle, requires intervals not exceeding 31 days and at least once per calendar month. OSHA 1910.157(e)(2) separately requires a monthly visual inspection.

What the Monthly Check Covers

1. Location -- In its designated place
2. Visibility -- The extinguisher, or signage showing its location, is visible
3. Access -- Nothing obstructs it
4. Pressure -- Gauge or indicator in the operable range
5. Fullness -- Confirmed by weighing or hefting for self-expelling, cartridge-operated, and pump tank types
6. Wheeled units -- Tires, wheels, carriage, hose, and nozzle in good condition
7. Nonrechargeable units -- Push-to-test indicator, where provided, reads satisfactorily

Where extinguishers face severe hazards, a history of fires, physical damage, abnormal temperatures, or corrosive atmospheres, NFPA 10 adds checks that instructions are legible and facing outward, seals and tamper indicators are intact, and there is no damage, corrosion, leakage, or clogged nozzle. These take seconds, so many facilities apply them everywhere. NFPA 10 also calls for daily or weekly manual inspection where conditions warrant, such as units repeatedly found blocked or tampered with.

When the Check Finds a Problem

Any deficiency requires immediate corrective action:

• Rechargeable units with low pressure, unconfirmed fullness, damage, or missing seals go through maintenance.
• Nonrechargeable dry chemical units with the same problems are removed from use, discharged, and destroyed or returned to the manufacturer.
• Nonrechargeable halon units are not discharged. They go back to the manufacturer, a fire equipment dealer, or a distributor for halon recovery.

Monthly Inspection Records

Records can be kept on a tag attached to the extinguisher, on a checklist kept on file, or electronically. Each record shows the month and year and the initials of the inspector, and must include units that needed corrective action. NFPA has advised keeping monthly records for at least 12 months, and the current text calls for records demonstrating the last 12 monthly inspections.

Electronic Monitoring as an Alternative

NFPA 10 permits electronic monitoring in place of the manual monthly inspection. The Minnesota Department of Health confirms the 2010 edition already allowed it. A monitoring device reports conditions such as location, obstruction, and pressure to a control unit. Key conditions in the recent text:

• Owner chooses, AHJ approves. The owner decides between manual, electronic, or combined inspection, but any non-manual method needs AHJ approval.
• Location-only monitoring is not enough. A unit monitored only by a switch that signals removal from its bracket or cabinet must still be manually inspected monthly.
• Records. Where a deficiency triggers a signal at a control unit, recordkeeping is an electronic event log at the panel, and records must show the last 12 monthly inspections.
• The system needs its own upkeep. Monitoring components are tested and maintained annually per the manufacturer, covering power supply and battery, obstruction, location, and pressure sensors, and connection continuity, with every unit's communication to the control unit verified. Devices tied to a fire alarm system are maintained under NFPA 72.

Electronic monitoring replaces only the monthly inspection, not annual maintenance, internal examinations, or hydrostatic tests. Industry commentary on the 2026 edition describes expanded recognition of monitoring technology, and NFPA's second draft report for that edition included a performance-based inspection program option that requires AHJ approval and still calls for inspections at intervals not exceeding 90 days. Confirm the final published text and your adopted edition before changing your program.

Annual Maintenance by a Certified Technician

NFPA 10 requires maintenance at intervals of not more than one year, at the time of hydrostatic testing, or when an inspection or electronic notification reveals a problem. OSHA 1910.157(e)(3) also requires an annual maintenance check.

Maintenance follows the manufacturer's service manual and examines the mechanical parts, extinguishing agent, expelling means, and physical condition. The technician typically:

• Repeats the monthly items and examines the exterior for damage, corrosion, and nozzle blockage
• Confirms operating instructions are present, legible, and facing forward
• Removes boots and foot rings to examine the cylinder
• Checks whether a 6-year examination or hydrostatic test is due
• Removes and replaces the tamper seal on rechargeable units (seals on nonrechargeable units stay in place)
• Replaces or removes improperly labeled units

Internal Examination Intervals by Type

Some extinguishers must be opened more often than every 6 years. The Minnesota Department of Health notes, for example, that loaded-stream and antifreeze units need annual internal examination and carbon dioxide and wet chemical units need it every 5 years. The table reflects the recent NFPA 10 text.

NFPA 10 also requires an annual conductivity test on carbon dioxide hose assemblies, with failed hoses replaced.

The Annual Maintenance Tag

Each extinguisher must carry a securely attached tag or label showing the month and year of maintenance, the person who performed it, and the name and address of the servicing agency. Tags must not cover the operating instructions, classification, or manufacturer's labels. Units that received an internal examination or were recharged also get a verification-of-service collar around the neck, which cannot be removed without removing the valve. Cartridge- and cylinder-operated units and pump tanks are exempt from the collar.

OSHA requires the employer to keep a record of the annual maintenance date for one year after the last entry or the life of the shell, whichever is less.

The 6-Year Internal Examination

Stored-pressure extinguishers that require a 12-year hydrostatic test -- in most buildings, the familiar stored-pressure ABC or BC dry chemical unit -- must be emptied every 6 years and given the internal and external examination procedures in the manufacturer's service manual and NFPA 10. OSHA 1910.157(e)(4) contains a similar requirement for stored-pressure dry chemical units, exempting nonrefillable disposable units.

• The clock resets. If maintenance procedures are performed during a recharge or hydrostatic test, the 6-year interval restarts from that date.
• Halon agent may be removed only with a listed halon closed recovery system.
• Nonrechargeable units get no 6-year examination or hydrostatic test. They must be removed from service no later than 12 years from the date of manufacture.
• High temperatures. These stored-pressure units, if exposed to temperatures at or above their listed rating, must be emptied and serviced annually.

Units that pass get a durable weatherproof label at least 2 in. by 3-1/2 in., applied by a heatless process, showing the month and year, the person, and the agency. Old 6-year labels are removed.

Hydrostatic Test Intervals by Extinguisher Type

Hydrostatic testing pressurizes the shell with water to confirm it can safely hold its operating pressure. NFPA 10 Chapter 8 sets the intervals, OSHA Table L-1 lists broadly similar intervals for workplaces (it does not list every type, such as wet chemical), and NFPA 10 states the retest is to be done within the calendar year the interval comes due.

Expellant gas cylinders and cartridges have their own intervals, often governed by DOT or Transport Canada rules; your service company should track them.

Documentation. Low-pressure cylinders (dry chemical, wet chemical, pressurized water) that pass get a durable label showing the month and year, test pressure, tester, and company (2010 edition, Section 8.7.2, per the Minnesota Department of Health). High-pressure cylinders such as carbon dioxide are stamped with the tester's identification number and test date (Section 8.7.3). OSHA requires keeping evidence of the test until the next required retest or until the unit is taken out of service, whichever comes first.

Class K Extinguishers and Kitchen Hood Systems

NFPA 10 requires extinguishers protecting cooking appliances that use vegetable or animal oils and fats to be listed and labeled for Class K fires. Key points:

• Travel distance. No more than 30 ft (9.1 m) from the cooking hazard to the Class K extinguisher. The annex lists fryers, griddles, and stove tops as examples.
• No extended wands. Class K units manufactured after January 1, 2002, may not have extended-wand discharge devices, because injecting agent below the surface of hot oil can cause a violent reaction.
• Remove non-K units. Extinguishers installed specifically to protect cooking appliances that lack a Class K rating must be removed from service.
• Placard. Where the hazard is protected by an automatic fire protection system, a placard near the extinguisher must state that the system is to be actuated before the extinguisher is used.

The placard reflects how the two work together: the hood's automatic suppression system is the primary protection and the Class K extinguisher is the backup. The NFPA 10 annex refers readers to NFPA 96 and notes that people in cooking areas need specific training on extinguisher use. The hood system has its own inspection requirements, outside the scope of this checklist.

OSHA 29 CFR 1910.157 Requirements

OSHA's standard applies to extinguishers provided for employee use. The main requirements:

Paragraph (b)(1) exempts employers that have a written policy requiring immediate and total evacuation, with compliant emergency action and fire prevention plans, where extinguishers are not available in the workplace. Once extinguishers are provided for employee use, however, the inspection, maintenance, and training rules apply.

Placement and Travel Distance Basics

Monthly inspectors should know the placement basics so they can spot a unit that has been moved:

• Class A (ordinary combustibles) -- Maximum travel distance of 75 ft under both NFPA 10 and OSHA.
• Class B (flammable liquids) -- OSHA sets 50 ft from the hazard area. NFPA 10 sets 30 ft or 50 ft depending on hazard level and extinguisher rating.
• Class D (combustible metals) -- OSHA sets 75 ft from the metal working area.
• Class K (cooking media) -- 30 ft under NFPA 10.
• Mounting height -- Under NFPA 10, units of 40 lb or less are mounted with the top no more than 5 ft above the floor, heavier units (other than wheeled) no more than 3-1/2 ft, and the bottom at least 4 in. above the floor.

Notes for Health Care Facilities

CMS-certified hospitals and nursing homes are surveyed against the 2012 Life Safety Code. On CMS form CMS-2786R, tag K355 requires portable extinguishers to be selected, installed, inspected, and maintained per NFPA 10, and the referenced edition for federal certification is 2010. State licensure may reference a newer edition, so facilities may need to satisfy both. Keep extinguisher records with your other life safety documentation, such as NFPA 25 sprinkler records, fire pump test records, and fire and smoke damper inspections. For broader survey context, see our guide to CMS and Joint Commission emergency power compliance.

Printable Fire Extinguisher Inspection Checklist

Use this as a template for your monthly log and service tracking.

For each extinguisher, keep a permanent record of its type, manufacture date, and the dates and providers of its last annual maintenance, recharge, 6-year examination, and hydrostatic test. The Minnesota Department of Health recommends keeping this for the life of the extinguisher and making sure at least two people know where it is.

Conclusion

Fire extinguisher inspection requirements are straightforward once you separate them by interval. Facility staff handle the monthly check and its records. A certified technician handles annual maintenance, internal examinations every 1 to 6 years depending on type, and 5- or 12-year hydrostatic tests. OSHA adds recordkeeping, alternate protection during service, and annual employee education. Keep an inventory, calendar the intervals, and confirm with your AHJ which NFPA 10 edition applies, especially before relying on electronic monitoring.

Sources and References

• 29 CFR 1910.157 -- Portable Fire Extinguishers -- Legal Information Institute, Cornell Law School. https://www.law.cornell.edu/cfr/text/29/1910.157
• 1910.157 -- Portable Fire Extinguishers -- Occupational Safety and Health Administration. https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.157
• Maintenance and Testing of Portable Fire Extinguishers (Rev. June 2024) -- Minnesota Department of Health. https://www.health.mn.gov/facilities/regulation/engineering/lscfireext24.pdf
• NFPA 10, Standard for Portable Fire Extinguishers, Second Draft Report (Annual 2025 revision cycle) -- National Fire Protection Association. https://docinfofiles.nfpa.org/files/AboutTheCodes/10/10_SDR_A2025.pdf
• NFPA 10-2026 Edition, Proposed TIA Log No. 1864 -- National Fire Protection Association. https://docinfofiles.nfpa.org/files/AboutTheCodes/10/NFPA_10_Proposed_TIA_1864.pdf
• Guide to Fire Extinguisher ITM -- National Fire Protection Association. https://www.nfpa.org/news-blogs-and-articles/blogs/2020/10/30/guide-to-fire-extinguisher-itm
• NFPA 10, Standard for Portable Fire Extinguishers -- National Fire Protection Association. https://www.nfpa.org/product/nfpa-10-standard/p0010code
• Form CMS-2786R, Fire Safety Survey Report, 2012 Life Safety Code, Health Care (K355) -- Centers for Medicare and Medicaid Services. https://www.cms.gov/Medicare/CMS-Forms/CMS-Forms/downloads/cms2786R.pdf
• NFPA Codes: What's New in 2026? -- Summit Fire and Security. https://summitfire.com/insights/blog/nfpa-codes-whats-new-in-2026/