Fire extinguisher testing intervals under AS 1851: six-monthly, yearly, five-yearly

1. The short answer

AS 1851-2012, Routine service of fire protection systems and equipment, deals with portable and wheeled fire extinguishers in Section 10. It sets three routine service intervals, each with its own table of activities:

• Six-monthly (Table 10.4.1): the routine inspection. Every extinguisher, twice a year.
• Yearly (Table 10.4.2): every six-monthly item again, plus a deeper check of the unit.
• Five-yearly (Table 10.4.3): the hydrostatic pressure test, discharge, internal inspection and recharge.

A fourth event is not an interval: recharge after any use, even partial. A three-yearly service also exists under clause 10.2.3 for certain types and environments, covered below.

Each interval carries a tolerance under Table 1.11(B). The NSW Building Commission's good practice guide for implementing AS 1851-2012 sets it out: one month either side for six-monthly, two months for yearly, three months for the three-yearly and five-yearly services. A service outside its window is a non-conformance. The same logic runs through every other schedule in the standard.

2. There is no monthly extinguisher inspection in AS 1851

This causes the most confusion, so a plain statement. The frequency matrix in the NSW good practice guide lists monthly schedules for sprinklers, pumpsets, hydrants, water tanks, detection and alarm systems, special hazard systems and mechanical smoke control. Portable extinguishers are not on it. The first routine service the standard asks for is the six-monthly one.

Plenty of workplaces run a monthly walk-around: a warden confirms each extinguisher is in place, unobstructed and still sealed. That is good housekeeping. It is a separate owner practice, not a routine service under AS 1851. It does not go on the tag and it does not replace the six-monthly visit. A vendor schedule with a "monthly" line against extinguishers is the vendor's offer, not the standard's requirement.

3. The six-monthly routine service (Table 10.4.1)

The six-monthly service is a hands-on inspection of every unit in its location. FPA Australia's information bulletin on safe handling during servicing reproduces the table. The activities are:

• Conspicuous, accessible and in its assigned location, with the location sign visible as AS 2444 requires.
• Anti-tamper device intact and safety pin in place.
• Exterior clean, operating instructions legible.
• Maintenance record tag or label firmly attached.
• No external damage, corrosion or pitting.
• Outlet hose securely fitted, nozzle attached, free of obstruction and not cracked.
• Pressure indicator, where fitted, legible and in the operable range.
• Weighed to confirm it is fully charged. This is how a carbon dioxide extinguisher, which has no gauge, proves its contents.
• Support bracket secure.
• Dry chemical powder units inverted to confirm the powder is free-flowing.
• Actuating device free of corrosion and moving freely.

A repairable unit is repaired with the owner's authorisation. A corroded or unrepairable unit is condemned, labelled and returned with a defect report (clauses 10.2.6 and 10.2.10). Findings are classified as a critical defect, a non-critical defect or a non-conformance. Under clause 1.17.1 a critical defect is told to the responsible entity before the technician leaves site and confirmed in writing within 24 hours; the other two classes are notified within one week.

4. The yearly service (Table 10.4.2)

One of the two visits each year is the yearly service. Item 2.1 of Table 10.4.2 repeats every six-monthly activity and the rest of the table adds a closer inspection of the unit's condition and installation. The tag mark reads 2 rather than 1, and the yearly service feeds the yearly condition report issued under clause 1.17.2 and Appendix E, where the extinguishers' condition and any outstanding defects reach the owner in one document.

5. Five-yearly: the hydrostatic test, discharge and recharge (Table 10.4.3)

Every five years the extinguisher is taken out of service for Table 10.4.3. Item 3.1 repeats the six-monthly inspection. Item 3.8, as amended by Amendment 1, requires a hydrostatic pressure test of all portable extinguishers: the unit is discharged, the cylinder is pressure tested, the components are inspected, and the extinguisher is recharged and returned with the test date recorded. The standard specifies the test pressure.

This work is normally done in a workshop, and cover at the location has to be maintained while the unit is away. The five-yearly date is the one most often lost between contractors, which is why an asset register that carries it is worth more than any tag.

6. After any use, and the three-yearly clause

An extinguisher that has been discharged, even briefly, is recharged before it goes back on the wall. The industry tag numbering records this as a 5. A part-used extinguisher cannot be relied on for its rated performance.

Clause 10.2.3 sets a three-yearly service, with a three-month tolerance, for certain extinguisher types and operating environments. Public sources disagree on exactly which units it captures, so ask your service provider to show you Section 10 against your register. One caution from older editions: a six-yearly extinguisher interval still gets quoted. It is not in AS 1851-2012, where the only six-yearly item is for water tanks.

7. The service tag, and the record behind it

Every extinguisher carries a maintenance record tag or label, metal or adhesive, prominently fixed and showing the month and year of each service. It is a permanent record the standard recognises under clause 1.16.4.

The familiar yellow tag is a matrix of months against years. The technician stamps the service level into the cell: 1 for six-monthly, 2 for yearly, 4 for the five-yearly hydrostatic test, 5 for a recharge after use, and 3 where the three-yearly clause applies. AS 1851-2012 no longer specifies that numbering, but the industry still uses it. Punching a plain hole instead of a number tells nothing.

A well-serviced extinguisher shows two aligned columns of marks six months apart. Marks that drift out of line are a service history in miniature: a late visit, an early one, or a missed one, visible to anyone who can read a tag. Assessors can.

The five-yearly test date is recorded in one of four ways: stamped on the tag, stamped or embossed on the cylinder skirt or neck, on a durable tamper-evident label on the cylinder, or on a stamped indicator ring under the valve.

Where tags or labels are the field record, clause 1.16.5 requires the service provider to give the responsible entity a hardcopy summary: the equipment register, a statement of the work done, and the items found missing or defective. A printed, signed hard copy is left on site after each routine service. In New South Wales, since 13 February 2026, class 1b and 2 to 9 buildings must be serviced to AS 1851-2012, with a hard-copy logbook on site and records kept for seven years. What that logbook has to contain is its own subject.

8. Fire blankets: six-monthly only

Fire blankets are Section 11 and have a single routine interval: six-monthly. There is no yearly fire blanket service in AS 1851-2012; the good practice guide's matrix shows the yearly row applying to everything except blankets. A contractor billing an "annual fire blanket test" is billing for something the standard does not describe.

The six-monthly check confirms the blanket is accessible with its instructions legible, correctly mounted, the container and quick-release tabs intact, the fabric free of damage and contamination, and the blanket folded so it deploys. The tag is updated. A used blanket is replaced, not refolded. Replacement life is a question for the manufacturer's instructions.

9. Fire hose reels: six-monthly and yearly, no five-yearly

Fire hose reels are Section 9. They are serviced six-monthly (Table 9.4.1) and yearly (Table 9.4.2). That is the complete schedule. The six-monthly service covers access and signage, hose condition, the nozzle, reel operation, the valve, seals and mounting, and the nozzle is opened to confirm water flows. The yearly service repeats those items and adds a flow and pressure test at the nozzle against baseline data, with the hose run out and inspected.

Several vendor pages advertise a five-yearly hydrostatic test for hose reels. The good practice guide's matrix shows no five-yearly schedule in Section 9. In Victoria, routine hose reel servicing is licensed plumbing work under a restricted class administered by the Building and Plumbing Commission.

10. A six-monthly extinguisher inspection checklist

The six-monthly service reduced to what the technician confirms at each unit, in working order:

• Scan or read the asset tag; confirm type, size and location match the register.
• Conspicuous, accessible, in its assigned location, location sign visible.
• Anti-tamper seal intact, safety pin in place.
• Exterior clean, no dents, corrosion or pitting; instructions legible.
• Hose securely fitted, nozzle attached, no cracks, no obstruction.
• Gauge legible and in the operable range, where fitted.
• Weigh the unit and record the weight against the full weight.
• Powder units: invert and confirm the agent flows freely.
• Actuating device free of corrosion and moving freely.
• Bracket secure; the unit sits in it properly.
• Service tag attached; stamp the month and year with the correct level.
• Check the five-yearly date on the cylinder; flag any unit due inside the next window.
• Record the result, classify any defect, photograph anything condemned.
• Do the fire blankets and hose reels on the same walk.

11. Who can do the work

Clause 1.10 of AS 1851 requires routine service to be carried out by competent persons, with the skills, knowledge and experience for the equipment, best shown by nationally recognised units of competency. Beyond that, licensing is state by state.

In New South Wales, routine servicing does not require accreditation. The accredited practitioner (fire safety), formerly called a competent fire safety practitioner, assesses each measure for the Annual Fire Safety Statement the owner issues; the six-monthly extinguisher round is not an assessment. In Queensland, the QBCC fire protection licence framework has a Portable stream with certify and install-and-maintain classes, and the Building Fire Safety Regulation requires maintenance by an appropriately qualified person holding the relevant class. Fire blankets stopped being licensed fire protection work in Queensland from 1 May 2021. In Victoria, hose reels are licensed plumbing work, as above.

12. How Maintenance Partners helps

The extinguisher round is where the field app earns its place. The technician scans the tag and the app opens the exact AS 1851 form for that extinguisher's type, size and service cycle: the six-monthly, yearly or five-yearly table, whichever the register says is due. Weight, gauge reading and a photo of anything condemned are captured inline, offline if the car park has no signal.

The five-yearly test date lives on the asset, not just the cylinder, so the next-due date is computed from the register and the unit appears in the schedule before it leaves its window. Fire blankets and hose reels sit on the same visit, each on their own form. The compliance engine measures every asset against its tolerance window and finds the ones that were late, or never done. Anything condemned becomes a graded defect, the defect becomes a quote the owner approves from an emailed link, and the replacement is a work order and an invoice. To see it on your own register, book sixty minutes with the team.

A note on jurisdiction

This article describes the extinguisher, fire blanket and hose reel schedules in AS 1851-2012 incorporating Amendment 1, in general terms. Which edition applies to a building, and who may perform or certify the work, varies by state and by the building's own fire safety schedule, occupancy permit or maintenance determination. For sign-off on a particular building, consult a practitioner accredited or licensed for the measures involved in that state.