How often must emergency lighting be tested?

BS 5266-1:2025 and BS EN 50172:2024 require a monthly function test of every luminaire and an annual test for the full rated duration, normally three hours.

Are sprinklers mandatory in high-rise flats?

For new residential buildings in England over 11 metres, Approved Document B requires automatic sprinklers throughout.

What is an evacuation alert system?

A BS 8629 system installed for use by the Fire and Rescue Service to alert residents floor by floor during a fire, mandatory in new-build residential over 18 metres.

Life safety learning hub

Life Safety Systems

Emergency lighting to BS 5266, evacuation alert systems under BS 8629, sprinkler and suppression systems to BS EN 12845, and dry/wet risers to BS 9990, the life safety infrastructure that keeps buildings evacuable.

In short

Life safety systems keep people alive during a fire long enough to evacuate or be rescued. Emergency lighting needs monthly function tests and annual 3-hour duration tests. Dry risers need annual wet pressure testing. Evacuation alert systems are mandatory in new high-rise residential over 18 metres.

Legal snapshot

What the law says

BS 5266-1:2025: Emergency lighting design, installation and testing, monthly function test, annual full-duration test, periodic photometric verification.
BS 9990:2015: Non-automatic fire-fighting systems in buildings, dry and wet risers, annual pressure test.
BS 8629:2019: Evacuation alert systems for use by Fire and Rescue Services in blocks of flats.
BS EN 12845: Fixed fire-fighting systems, sprinkler systems, design and maintenance.

On the ground

Common problems & fixes

Emergency lighting log book gaps
Fix, Contract a BAFE-registered maintainer for monthly and annual testing, with a digital log accessible to the RP.
Dry riser inlet valve seized
Fix, Annual wet pressure test with a certified specialist, a failure blocks fire service intervention.
Sprinkler heads painted over during refurbishment
Fix, LPS 1048-approved contractor to replace heads and recommission the zone.
New high-rise handed over without an EAS
Fix, Commission a BS 8629 evacuation alert system before occupancy, required for new residential over 18 metres.

Pillar guide15 min read

Emergency Lighting Testing Frequency: BS 5266 Explained

Emergency lighting testing frequency under BS 5266-1:2025 and BS EN 50172:2024: daily, monthly and annual tests, 1 or 3 hour duration, logbook rules.

Read the full guide

All life safety guides

1 guide

Cluster guides for this niche are publishing shortly. The pillar guide above covers the full duty-holder journey while we finish the deeper breakdowns.

FAQ

Frequently asked

How often must emergency lighting be tested?: BS 5266-1:2025 and BS EN 50172:2024 require a monthly function test of every luminaire and an annual test for the full rated duration, normally three hours.
Are sprinklers mandatory in high-rise flats?: For new residential buildings in England over 11 metres, Approved Document B requires automatic sprinklers throughout.
What is an evacuation alert system?: A BS 8629 system installed for use by the Fire and Rescue Service to alert residents floor by floor during a fire, mandatory in new-build residential over 18 metres.

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