Free Fire Extinguisher Inspection Checklist for Excel

Most checklists you'll find are one page long, and they only cover the monthly look. That's the easy part. NFPA 10 asks for a quick visual inspection roughly every 30 days, which anyone on staff can do in under a minute per unit. The hard part is the schedule sitting behind it: a maintenance visit by a qualified technician every 12 months, an internal examination every six years for stored-pressure units on a 12-year test cycle, and a hydrostatic pressure test every 5 or 12 years depending on what's inside the cylinder. A paper sheet taped to the wall can't tell you that the CO2 unit in the server room is due for its hydro test next month.

So we built the workbook the other way round. The Extinguisher Register comes first: one row per unit with its type, location, and the dates off the service tag, and it calculates every next due date. Status turns red when a service or test is late (OVERDUE), and when a unit has gone more than 30 days without a monthly check (CHECK NOW). It turns amber when a service falls inside the next 60 days. The Printable Checklist is the clipboard sheet for the walk-round, with your first 20 units already filled in from the register. The Monthly Inspection Log keeps the results, and any single "N" marks the row as a FAIL that stays red until someone enters the date it was fixed.

OSHA 1910.157 expects the same two layers from US employers: a monthly visual inspection, plus an annual maintenance check with a record kept for a year after the last entry (or for the life of the shell, if that's shorter). The register and the log are that record. They don't replace the technician's tag on the unit.

If you look after more than extinguishers, the same idea works for every piece of equipment with a service interval. The maintenance log template covers pumps, HVAC, and vehicles, and the equipment inventory template lists everything you own in the first place.

These are the eight checks on the printable sheet. They follow the monthly inspection list in NFPA 10, reworded for someone holding a clipboard rather than a code book:

1. The extinguisher is in its designated place, not borrowed for the workshop and left on a bench.
2. It is visible, and nothing blocks the way to it. Pallets are the usual culprit in warehouses.
3. The operating instructions on the nameplate are legible and face outward.
4. The pull pin is in and the tamper seal is unbroken.
5. The pressure gauge needle is in the green, or for units without a gauge (CO2, mostly), it is full by weight or by hefting.
6. No dents, corrosion, leaks, or a nozzle blocked by dirt or insects.
7. The hose and nozzle are intact, with no cracks at the fittings.
8. The service tag is there and the last annual service date on it is less than 12 months old.

Any failed check goes on the log with what you found. If the unit can't be trusted in a fire (low pressure, a broken seal, damage to the cylinder), take it off the wall, put a spare in its place, and book the technician; don't try to recharge or re-seal it yourself. Initial and date the tag on the extinguisher as well as the sheet, because a fire inspector looks at the tag first.

The register reads these from the Types & Intervals tab. The values follow NFPA 10:

Both clocks start from the manufacture date stamped on the cylinder until the first test or six-year service is done. If you leave those two columns empty on the register, it counts from the manufacture date for you. Those are the columns people forget to fill in, which is how a site ends up with dry chemical units well past their six-year service that nobody has ever opened.

Outside the US the numbers differ. The UK works to BS 5306-3 (annual service plus an extended service every five years for most types) and Australia to AS 1851 (six-monthly inspection). Change the values on the tab and the whole register recalculates. Your fire authority or insurer can set stricter intervals than the standard, and when they do, theirs win.