Emergency Lighting

Emergency lighting is a self-descriptive term and is lighting for an emergency situation when the main power supply fails. The loss of mains electricity could be the result of a fire or a power cut and the normal lighting supplies fail. This may lead to sudden darkness and a possible danger to the occupants, either through physical danger or panic.

Emergency lighting is normally required to operate fully automatically and give illumination of a sufficiently high level to enable persons of all ages to evacuate the premises safely. Most new buildings now have emergency lighting installed during construction, the design and type of equipment is normally specified by the relevant local authority, architect or consultant.

Non-maintained – The emergency light is only illuminated upon interruption of the mains supply.

Maintained – The emergency light uses the same source for both mains, which is usually switched and in emergency mode.
Sustained – The emergency light has a separate light source for both mains and emergency mode, for Emergency Lighting.

The primary reason for installing an emergency lighting system is to enable occupiers to exit a property safely in the event of a mains power cut leaving the occupiers in near or total darkness. The emergency systems also needs to meet fire safety legislation in a way that is visually acceptable and meets the user’s needs for ease of operation and maintenance. Consequently it is important to establish all the relevant legal requirements for emergency lighting and fire alarm systems before commencing the design, these should ideally be agreed between the system designer, user, fire authority, building control officer and system installer.

Dcs Security Systems Ltd designs, installs and maintains high quality emergency lighting equipment to our customers. Our design and installation service covers the following areas of the fire alarm installation process:-

•    Circuit design and routing
•    Regulation compliance
•    Equipment and installation specification
•    Light fitting layout
•    Dimensional information
•    Equipment space allocation
•    Fully engineered drawings
•    Installation carried out by qualified engineers
•    Full testing and certification process and audit trail
•    Electrical and Lux Level calculations
•    Operation and maintenance manual completion

Emergency Light Service And Testing

Scheduled Servicing of Emergency Lighting Systems

Servicing of the emergency lighting systems should be carried out at six monthly intervals for self contained luminaries in addition to a monthly flash test as stipulated in the British Standards BS EN 5266.

•    Contact Site Manager on arrival
•    Inspect and test the batteries and charger (for central battery systems)
•    Test the operation of each light and confirm that it works efficiently for at least one hour; cleaning diffusers as required
•    Every three years (unless otherwise stipulated by enforcing authority) test each lamp for full specified duration
•    Take an insulation test of the cabling
•    Enter details of the service into site log book
•    Carry out inspection of all areas of premises, furnishings and equipment therein and highlight recommendations to maintain/improve efficiency of the system.
•    Leave with Site Manager after each service a test report as required under the British Standard Code of Practice. If faults have been noted, enter on certificate.

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