Monthly function checks vs annual duration testing
Home Office guidance describes a monthly function test that confirms each emergency lamp illuminates, and an annual full-discharge test that checks sustained operation for the designed duration. Some modern systems self-test, changing how routine checks are performed and reviewed.
Check my situationChoose the test that answers the question
A brief function check finds switching and obvious lamp failures. A full-duration test challenges the battery and sustained output. Neither establishes that the original lighting layout is adequate for today’s escape routes.
- What rated duration applies to this installation?
- Which functions are automated and how are fault indications reviewed?
- How will testing be scheduled around occupants and battery recharge?
What to do next: Specify the test type and rated duration in the brief. Keep records and ensure failures trigger action. Use a separate fire-risk/design review if coverage or adequacy is in doubt.
Monthly functional check
The test facility is operated long enough to confirm the emergency lamp illuminates. A responsible, suitably instructed in-house person may be able to undertake most routine checks; supplier attendance is not automatically required.
Annual full discharge
The installed system runs for its designed rated period, and failures are recorded. Batteries need time to recharge; arrange testing and temporary precautions so an occupied building is not left without effective escape lighting.
Self-testing systems
Automated routines may reduce manual test work, but fault indications, records, maintenance and failed units still need a responsible response. Ask the provider to explain the actual system rather than assuming a standard schedule.