British Standard BS 5839 is a comprehensive set of guidelines and recommendations for fire detection and fire alarm systems in buildings.

Developed by the British Standards Institution (BSI), this standard aims to enhance fire safety and ensure early detection of fires to minimise potential risks to life and property.

The standard outlines various categories of fire alarm systems, including manual, automatic, and mixed systems, providing guidance on their design, installation, commissioning, and maintenance.

BS 5839 also covers specific requirements for different types of buildings and occupancy, making it an essential reference to create safer environments for architects, engineers, and fire safety professionals.


British Standard BS 5266 provides guidance on emergency lighting systems for various types of buildings. This standard ensures that adequate illumination is available during power failure or emergency situations to facilitate safe evacuation.

The standard outlines the types of emergency lighting systems, including escape route lighting, open area lighting, and high-risk task area lighting, and provides recommendations on their design, installation, testing, and maintenance.

It also covers different light sources, such as LEDs and fluorescent lamps, and the duration of backup power.

Compliance is crucial to safeguard lives and ensure a well-prepared response in case of emergencies.

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