Legal requirements
The main reason for installing an emergency lighting system is to enable the building 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 any design or installation and these should ideally be agreed between the system designer, user, fire authority, building control officer and system installer. The following information may give you guidance under Article 14 of the Regulatory Reform (Fire Safety) Order 2005. It is without prejudice to anything which may be required by an enforcing authority.
Design objective
BS 5266, when referring to the provision of Escape Lighting requires that when the supply to all or part of the normal lighting in occupied premises fails, escape lighting is required to fulfil the following functions:
(a) To indicate clearly and unambiguously the escape routes.
(b) To provide illumination along such routes to allow safe movement towards and through the exits provided.
(c) To ensure that fire alarm call points and fire fighting equipment along escape routes can be readily located.
(d) To permit operations concerned with safety measures.
Other requirements
In addition to fire safety legislation, some workplaces require a licence from the Local Authority, including theatres and cinemas, sport stadiums and premises for public entertainment, music, dancing, gambling and the sale of alcohol. Other premises must be registered with the Local Authority and be inspected by the Fire Authority, including nursing homes, children's homes, residential care homes and independent schools. Both licensed and registered premises have to pass a fire inspection to confirm that they have systems complying with BS 5266-1 for the emergency lighting and BS 5839 for fire equipment. Records of a system are now essential to maintain the validity of approvals and licences.
Location of emergency luminaires
Initial design is conducted by situating luminaires to reveal specific hazards and highlight safety equipment and signs, in addition to providing illumination to assist safe travel along the escape route. This should be performed regardless of whether it is an emergency escape route or an open (anti-panic) area. Only when this is accomplished should the type of luminaire or its light output be considered.
BS5266 Pt 7: 1999 requires that the luminaires sited at points of emphasis must comply with BS EN 60 598-2-22. Specific locations where a luminaire must be provided are: