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Maintenance of Fire Detection and Alarm Systems

Firewize helps building owners and managers maintain fire detection and alarm systems covered by Part 6 of Australian Standard AS 1851:2012 incorporating Amendment 1. This guide outlines routine servicing requirements to satisfy Victorian Building Regulations and ensure continuous statutory compliance.

Russ Porteous
CEO, Firewize
13 Aug, 2026
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Under Part 15 of the Building Regulations 2018 (Vic), building owners carry a strict statutory obligation to maintain all essential safety measures listed on an Occupancy Permit or Maintenance Schedule. Firewize helps building owners and facility managers across Melbourne and Victoria to maintain fire detection and alarm systems covered by Part 6 of Australian Standard AS 1851:2012 incorporating Amendment 1. Routine inspection, testing, and preventative maintenance ensure these critical life safety systems operate reliably when required during a fire emergency.

Fire Alarm, Thumbnail (Five-Yearly)

Under Part 15 of the Building Regulations 2018 (Vic), building owners carry a strict statutory obligation to maintain all essential safety measures listed on an Occupancy Permit or Maintenance Schedule. Firewize helps building owners and facility managers across Melbourne maintain fire detection and alarm systems covered by Part 6 of Australian Standard AS 1851:2012 incorporating Amendment 1.

Routine inspection, testing, and preventative maintenance ensure these critical life safety systems operate reliably when required during a fire emergency.

A correctly working fire detection and alarm system functions as the primary early warning mechanism for building occupants and emergency services. Part 6 of the Standard establishes routine service activities for the entire installation, verifying that each sub-system communicates effectively during an incident.

The key components and sub-systems maintained during routine servicing include:

  • Fire Detection Control and Indicating Equipment (FDCIE): The main fire panel monitors system status, processes incoming alarm signals, and manages fault indications across designated building zones.
  • Fire Detectors and Manual Call Points: Heat detectors, smoke detectors, flame detectors, and manual break-glass call points, trigger early emergency warnings.
  • Occupant Warning Systems (OWS): An occupant warning system is a type of warning system that incorporates, speakers, sounders, and visual strobes deliver clear evacuation tones and verbal emergency instructions. These systems differ from an emergency warning system described in Australian Standard AS 1670.4.
  • Alarm Signalling Equipment (ASE): Dedicated monitoring hardware transmits fire alarm and fault signals directly to emergency services via accredited monitoring service providers.
  • Ancillary System Interfaces: Control outputs automatically initiate secondary building protection measures, such as external alarm indicators, occupant/emergency warning systems, mechanical air-handling, stairwell pressurisation, magnetic door holders, and gas isolation valves.

AS 1851 Fire Detection & Alarm Service Schedules and Frequencies

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To ensure latent faults are identified and rectified promptly, AS 1851 prescribes maintenance activities across four defined routine service intervals.

Monthly Servicing

Monthly service activities focus on verifying the core functions of the FDCIE, primary power supplies, warning systems, and Alarm Signalling Equipment. Technicians perform functional tests to ensure alarm signals are correctly received, displayed, and transmitted without fault.

Six-Monthly Servicing

Six-monthly service activities specifically apply to fire detection systems that incorporate special hazard protection features, such as gaseous fire suppression systems. Servicing evaluates specialised control interlocks and detection circuitry to ensure these protected hazards remain fully operational.

Yearly Servicing

Yearly routine servicing expands upon monthly checks by requiring comprehensive physical testing of field devices across the entire building layout. During this activity, a specified percentage of detectors are functionally tested, occupant warning sound levels are verified, and ancillary control functions are systematically operated. In addition, battery capacity discharge testing is conducted in accordance with Appendix F of the Standard unless the standby batteries have been replaced within the preceding two years.

Five-Yearly Servicing

Every five years, the system undergoes an extensive technical audit to verify circuit integrity and system features that are not evaluated during regular annual inspections. These comprehensive checks ensure long-term reliability and confirm that the overall system still aligns with original design specifications.

Five-yearly service activities required under AS 1851 include:

  • Supervised Circuit Testing: Testing all input and output circuits to confirm that open-circuit and short-circuit fault conditions report correctly to the main panel.
  • Addressable Short-Circuit Isolators: Verifying that addressable loop isolators function correctly, ensuring a single short-circuit fault isolates no more than 40 devices.
  • Collective Circuit Fault Verification: Removing the end-of-line device on collective circuits to verify clear fault signal registration at the FDCIE.
  • Audio Speaker Impedance: Measuring and recording the electrical impedance of all occupant warning speaker circuits to detect wiring degradation or damaged speakers.
  • Alarm Verification Facility (AVF): Confirming that signal delay protocols operate strictly according to original baseline design parameters to prevent false alarms.

Managing Nuisance Alarms and Detector Contamination

Nuisance alarms disrupt business operations, reduce occupant trust in safety systems, and can result in significant financial penalties from local fire authorities. Over time, airborne dust, insects, and environmental debris accumulate inside optical smoke detectors, causing sensor drift and increasing false alarm risks.

While AS 1851 does not explicitly mandate detailed contamination testing, Firewize recommends performing a yearly detector contamination analysis using specialised software. Extracting detector drift data identifies units exceeding 75% of their clean-air threshold, allowing dirty detectors to be replaced proactively before they cause unwanted brigade turnouts.

Logbooks, Compliance Records, and AESMR

Maintaining complete, verifiable service records is a mandatory legal requirement under Australian Standard AS 1851:2012. After completing routine maintenance, technicians must record the date, frequency, and pass or fail results in a hard-copy logbook left on site.

These detailed service logs and the resulting Yearly Condition Report provide essential evidence when building owners prepare their statutory Annual Essential Safety Measures Report (AESMR). Under Victorian law, all maintenance logbooks and compliance records must be retained on site for a minimum of seven years.

At Firewize, we simplify essential safety measures management through our proven 7-Step compliance approach and proprietary uScan asset management platform. Our qualified technicians partner with building owners and facility managers to deliver transparent reporting, accurate baseline data reconciliation, and long-term maintenance planning. Contact the Firewize team today to discuss your building's fire detection and alarm system servicing requirements.

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