Extinguishers4 min read
How to read a fire extinguisher inspection tag
The tag on each extinguisher records when it was last serviced and when the next service is due. Two of those dates are the ones that get missed.
Every fire extinguisher in your building has a tag on it. It is a small card, punched or written on, and it is the record of when that unit was last serviced and what was done to it. Most owners never read one closely. It is worth doing, because the tag also tells you when the next service is due.
What the tag records
A tag is a service history in miniature. Each time a technician services the unit, the month and year are marked and the tag is signed. At a minimum you should be able to read three things:
- When it was last serviced. Every extinguisher gets a hands-on maintenance check once a year, and a fresh tag with it.
- What was done. An annual check, an internal examination, a hydrostatic test and a recharge are four different jobs. The tag says which one happened.
- Who did it. A company name, and the technician's signature or initials.
Anyone — you, a fire inspector, an insurance surveyor — can look at a single extinguisher and know where it stands without opening a file.
The two dates that get missed
The annual check is the one everybody knows about. Behind it sit two longer intervals that come around rarely enough to slip, and between them they account for most of what we find on portable extinguishers.
- The six-year internal examination. A stored-pressure dry chemical extinguisher is emptied, opened, inspected inside, then refilled and re-tagged. Nothing about the outside of the unit tells you it is due.
- The twelve-year hydrostatic test. The cylinder itself is pressure-tested to confirm it still holds what it is rated for. Water, foam and wet chemical cylinders are on a five-year cycle instead of twelve.
Neither of these is a dramatic failure. They are dates that passed, and the tag is where you can spot this.
What the monthly inspection covers
The standard expects the building owner to look at each extinguisher once a month, and it is deliberately simple enough that your own staff can take care of it. Four things, a few seconds each:
- It is there. In its bracket or cabinet, where the sign says it is.
- You can reach it. Nothing stacked in front of it and nothing hanging on it.
- The gauge is in the green. Not low, not empty.
- The pin is in and the seal is unbroken. If either is gone, have the unit looked at, whether or not it appears used.
Keep a record that it happened. That monthly look is worth more than it sounds: a quarter of the extinguisher problems we find are a unit reading low or sitting empty, and the gauge shows both.
After an extinguisher has been used
Any extinguisher that has been discharged is recharged, checked and re-tagged before it goes back on the wall — including one that was set off briefly or by accident. A partially used extinguisher is treated as an empty one.
If the tags in your building are hard to read, out of date, or missing, that is worth sorting before an inspection rather than during one. Tell us what is installed and we will put the whole schedule together — portable extinguisher inspection and service sits alongside everything else in the building on one inspection calendar.
Questions we get asked about this
How often does a fire extinguisher need to be inspected?
There is a quick visual check every month, which the building owner can do, and a hands-on maintenance check by a technician once a year. Beyond that, stored-pressure dry chemical units get an internal examination at six years and a hydrostatic test at twelve. Water, foam and wet chemical cylinders are tested at five years instead.
What do the punches or marks on the tag mean?
They record the month and year of the last service. The technician marks the date and signs it, so the tag shows at a glance when the unit was last handled and what was done to it.
Can I inspect my own fire extinguishers?
You can do the monthly visual check yourself, and the standard is written expecting that you will. The annual maintenance, the six-year internal examination and the twelve-year hydrostatic test are done by a licensed technician.
What happens if the tag is missing or out of date?
An extinguisher with no current tag cannot be shown to be in service, so it can be written up on inspection. The fix is straightforward — the unit is serviced, or replaced if it fails, and re-tagged.
Do I have to replace an extinguisher that fails a test?
Not always. Many units are repairable and go back into service after an internal examination or a recharge. A cylinder that fails the hydrostatic test is taken out of service, because the pressure vessel itself is what failed.