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Fire alarm commissioning and handover: what to expect

What commissioning checks, and what you should receive when the system is handed over.

Direct answer

Commissioning is the stage at which a competent person verifies that the installed fire alarm system meets its design and operates correctly. Handover is the formal transfer of the completed system and its documentation to the purchaser or user, who (or their representative) signs an acceptance certificate. As general guidance under BS 5839-1, expect commissioning checks, acceptance, and a documentation pack at handover — typically design, installation and commissioning certificates, an acceptance certificate, as-fitted drawings, O&M information, and the log book. Confirm the exact documents expected for your project.

Applies to

  • Products / Models: All Hochiki Europe addressable and conventional systems (general guidance)
  • Firmware / Version: Not applicable
  • Region: UK
  • Standards: BS 5839-1

Installation vs commissioning vs handover

  • Installation — the physical fitting and wiring of the devices, cabling and panel.
  • Commissioning — verification, by a competent person, that the installed system matches the design and operates correctly (devices, addressing, cause-and-effect, sounders, interfaces).
  • Soak period — for a system with more than 50 automatic fire detectors, BS 5839-1 recommends a soak period of at least one week between commissioning and handover, during which false alarms and faults are monitored and any connection to an alarm receiving centre is disabled. Until the soak test is complete the system should not be treated as the operational means of giving warning of fire, and each manual call point should carry an indication that it is not to be used. The designer should define the actual duration in the tender specification.
  • Handover — the formal transfer of the completed system and its documentation to the purchaser or user, with the purchaser (or their representative) signing an acceptance certificate. On many projects the purchaser is the contractor or developer and the user is the occupier, so agree early who receives the documents and who signs; their duties begin once handover is complete.

What commissioning involves

  • Confirming the installed system reflects the design specification and the intended category of cover.
  • Testing that each device is correctly addressed and located, and that the panel reports it correctly.
  • Verifying the cause-and-effect programming (which inputs trigger which outputs) behaves as designed.
  • Checking sounders, visual alarm devices, and any interfaces to other systems operate as intended.
  • Confirming that a suitable diagrammatic representation of the premises is provided at the control equipment.

Documentation expected at handover

At handover you should receive:

  • Design, installation and commissioning certificates, and an acceptance certificate — see What certificates should a fire alarm system have? for what each one covers.
  • As-fitted drawings showing the installed devices and zones.
  • Operation and maintenance (O&M) information / product manuals for the installed equipment.
  • The log book, ready for the responsible person to begin recording — see What should be recorded in the fire alarm log book?.
  • A record of any agreed variations from the original design specification — that is, anything that departs from the recommendations of BS 5839-1 and was agreed. BS 5839-1 recommends that all agreed variations are also recorded in the log book.
  • A cause-and-effect matrix or text description of how the system's cause and effect operates — this can be as simple as "the system operates as a simultaneous evacuation", or a full matrix for a more complex strategy. BS 5839-1 expects the system's current configuration, including full details of the cause and effect logic, to be available with the system documentation, so ask for it at handover. Without it, later modification or fault-finding is much harder.
  • A zone plan or other diagrammatic representation of the premises at the control equipment (see below).

On larger or split-responsibility projects the purchaser may also commission an independent audit of the design, installation and commissioning. If they do, BS 5839-1 recommends that a verification certificate is issued; it can be of value to an enforcing authority or property insurer.

What to check before you accept the system

  • You should also receive the full documentation pack listed above, plus a clear briefing on how to operate the panel and how to carry out the weekly alarm test that BS 5839-1 recommends.
  • An understanding of who, from handover, is accountable for routine testing, servicing arrangements and the log book. In a workplace this falls to the responsible person under the Fire Safety Order.
  • A zone plan, mimic diagram or other suitable diagrammatic representation of the premises, displayed close to the control equipment and to any repeat indicating equipment. It should show at least the building entrances, the main circulation areas and the division into zones. Under BS 5839-1 its absence is treated as a major non-compliance, so do not accept handover without it.
  • Instruction for enough of the user's representatives in triggering, silencing and resetting the system and in avoiding false alarms.
  • Confirmation that premises management have been advised of their duties under BS 5839-1.
  • Any tests defined in the purchase specification, witnessed as agreed.
  • Advice on how to investigate a false alarm, and how to assign the correct category to it. BS 5839-1 recommends that the commissioning/handover organisation provides this.

When to contact technical support

  • If the documentation pack at handover appears incomplete.
  • If you are unsure whether the commissioned system matches the original design or category of cover.
  • If commissioning reveals defects or non-conformances that were not resolved before handover.

Safety note

This article is general guidance for Hochiki Europe products. Design, installation, commissioning, maintenance and modification of fire detection and alarm systems should be carried out by, or under the responsibility of, a competent person in accordance with the applicable standards (for example BS 5839-1 in the UK). Statutory requirements imposed by the relevant enforcing authority also apply. Always refer to the current product manual and data sheet for the exact model before carrying out any work.

References

  • BS 5839-1 (current edition) — fire detection and fire alarm systems for buildings: commissioning, acceptance, and handover recommendations

Last reviewed: 2026-10-21 — Reviewed by: Hochiki Europe Technical Support