Fire Extinguisher Inspection Tags: How to Read and Fill One Out

An extinguisher that has been serviced carries its paperwork on the unit: a tag or label that identifies the work, the worker and the company.

NFPA 10 requires that tag to show three things at minimum — the month and year maintenance was performed, the person performing the work, and the name and address of the agency performing the work.

Each entry means something specific when you fill one out.

• Month and year — the month and year you performed the maintenance.
• Person performing the work — the individual who did it, so the entry points at a technician and not only at a company.
• Name and address of the agency — your employer, the extinguisher service company behind the work.

Those three are the floor, not the ceiling.

Search “inspection tag” and you land on this card, but inspection and maintenance are different events in the standard’s paperwork — the monthly check is a quick visual look, while maintenance is the thorough exam with an entry on the tag.

The “certification tag” phrasing points at the same card, since the person entry stands behind the standard’s requirement that maintenance be done by certified persons.

Two different service events leave marks around the tag, and they are not the same record.

The first is the monthly check.

OSHA requires portable extinguishers provided for employee use to be visually inspected monthly, and NFPA 10’s draft puts the interval at once per calendar month, not exceeding 31 days, recorded manually or by electronic monitoring.

Our research did not establish a standard meaning for the punched months on a tag, so confirm which event your company’s tag format records with a punch.

Where the monthly record is electronic, the monitoring system keeps that record.

The second is the annual maintenance check, a different event with its own entry.

OSHA requires the annual maintenance check for workplace extinguishers, with the date recorded and the record kept one year after the last entry or the life of the shell, whichever is less.

NFPA 10’s draft requires maintenance at intervals of not more than 1 year, at the time of hydrostatic test, or when an inspection discrepancy or electronic notification indicates it.

When you complete that maintenance, the tag carries the month and year, your identification as the person performing the work, and the agency’s name and address.

The certification bar differs between the two events.

Under NFPA 10’s draft, persons performing inspections are not required to be certified, while persons performing maintenance and recharging must be.

Certification means passing a test from an organization acceptable to the AHJ, and trainees may work only under direct supervision, in the immediate presence of a certified person.

The hang tag is not the only service evidence on a unit.

NFPA 10 requires a verification-of-service collar located around the neck of the container after maintenance that includes an internal examination.

The collar is a separate physical marker — it shows the extinguisher has been opened and examined internally, which a hang tag by itself does not prove.

It does not apply to every type: cartridge/cylinder-operated and pump tank types are excepted from the collar requirement.

The timing matters when you read a unit.

The annual maintenance check on a stored-pressure extinguisher is an external exam — stored-pressure units do not require an internal examination at that visit — so the collar is the record of the deeper internal work done on its own schedule.

Two more records ride on or behind the unit, and each answers a different question about its history.

The 6-year label marks internal service.

NFPA 10 requires stored-pressure extinguishers that need a 12-year hydrostatic test to be emptied and given internal and external examinations every 6 years, and OSHA puts the parallel duty on employers for stored-pressure dry chemical units that need a 12-year hydrostatic test.

That service gets its own sticker-style label: a durable weatherproof label of at least 51 mm × 89 mm (2 in. × 3½ in.), applied by a heatless process and self-destructing on removal, carrying the same month, person and agency entries as the tag.

Hydrostatic test evidence lives off the tag.

OSHA requires a certification record showing the date of the test, the signature of the person who performed it, and the serial number — or other identifier — of the extinguisher tested.

The retest clock runs on the extinguisher type.

NFPA 10’s draft table keeps 5-year retests for water, foam, wet chemical, CO2 and stainless-steel dry chemical types.

Mild-steel, brazed-brass or aluminum stored-pressure dry chemical and halogenated agents run 12 years, and the retest is due within the calendar year of the interval.

On a DOT-specification cylinder, the mark on the cylinder itself is federal.

Under DOT/PHMSA rules, no one may mark a DOT-specification cylinder with a requalifier identification number (RIN) and a requalification date without holding current PHMSA approval.

Nonrechargeable units sit outside all of it — they get no 6-year internal examination and no hydrostatic test, and they come out of service at 12 years from the date of manufacture.

NFPA 10’s tag list names the agency — your employer’s name and address.

Whether a state license, registration or permit number also belongs on the tag is a state question, because extinguisher service is regulated state by state.

Florida makes it unlawful to service, recharge, test, inspect, install or hydrotest extinguishers without a Division of State Fire Marshal license, and each individual performing the work must hold a permit.

Dealer licenses split into Class A, B and C for portable extinguisher work and Class D for pre-engineered systems.

Texas requires each fire extinguisher firm and branch to hold a State Fire Marshal certificate of registration, with a separate Type C registration for shops that hydrostatically test DOT-specification cylinders.

The fire code layer points the same direction.

The International Fire Code requires service personnel providing or conducting maintenance on portable extinguishers to hold a valid certificate issued by an approved governmental agency or other approved organization.

North Carolina’s fire marshal office, applying its adopted code, has interpreted annual inspection and tagging as maintenance that certified personnel must perform.

The credential behind your signature therefore changes by state.

What our research verified is that licensing layer — who may do the work in Florida and Texas.

Whether your state also requires its license or permit number printed on the tag was not something our sources confirmed, so treat that as a question for the agency that regulates extinguisher work where you work.

The licensing and exam layers behind that signature are the subject of our fire extinguisher certification guide.

Six habits to check your own tags against:

• Leaving an entry off. The month and year, the person, and the agency name and address are the minimum NFPA 10 requires — a tag missing any one is incomplete on its face.
• Treating the hang tag as proof of internal service. The internal-exam evidence is the verification-of-service collar, and the 6-year exam carries its own label.
• Confusing the 6-year label with the hydro record. The label rides on the unit; the hydrostatic evidence is a certification record — test date, tester’s signature, serial number — plus, on a DOT-specification cylinder, the requalification mark, which is a DOT matter.
• Marking work that did not happen. The date you punch or write is the date of a check you actually performed on that visit.
• Assuming one rulebook travels. Texas applies NFPA 10-2018 to extinguisher rules, and state positions differ — North Carolina’s fire marshal office interpreted in 2020, under its adopted code, that annual inspection and tagging must be done by certified personnel. The newest edition is not automatically the enforced one.
• Scheduling 6-year service on a nonrechargeable unit. Those units get neither the 6-year internal exam nor a hydrostatic test; they come out of service at 12 years from the date of manufacture.

Career information for extinguisher technicians — not licensing, legal, code, inspection, engineering or safety advice. The adopted edition, your AHJ and your state’s licensing agency govern what your tags must carry; confirm with them.