By Chris Watts
This e-book is a must-have for anyone fascinated by the layout, deploy and production of emergency lights structures to satisfy hearth protection danger tests
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Extra info for A Guide to Emergency Lighting
5) Facilities for use by disabled people, and/or any multiple closet facilities without borrowed light, should have emergency illumination from at least one luminaire. 3). Note Provision of emergency lighting in accordance with this subclause does not necessitate the provision of emergency lighting in toilets designed to accommodate only a single able-bodied person, or in en-suite toilets or bathrooms in hotel bedrooms. 6) Emergency lighting should be provided for all motor generator rooms, control rooms, plant rooms and switch rooms, and adjacent to main control equipment associated with the provision of normal and emergency lighting to the premises.
The new legislation acts retrospectively so any premises engineered to previous issues of BS 5266-1 need to be checked to consider whether they need upgrading in order to conform to the 2011 revision of the standard. The responsible person/risk assessor needs guidance to assist them in making this decision and also assessing the urgency and determining the timescale to enter in the action plan. The clauses of BS 5266-1 now cover the following topics: Consultation and records, Illumination of safe movement, Emergency escape lighting design, Batteries, Wiring systems and circuits, Choice of appropriate emergency lighting systems, Emergency lighting design procedure, Certificates and log book, Servicing.
The maximum period that should be allowed to elapse between the failure of the normal supply and the switch-on of the emergency lighting depends upon the rate at which panic may be expected to mount in a particular building. It also depends upon the time taken to adapt to the new, and normally much lower, illuminance provided by the emergency lighting. The illuminances in BS 5266-1 have been determined from experience and practical tests. A Guide to Emergency Lighting 31 3 Code of practice for the emergency lighting of premises (BS 5266-1) The actual values for the minimum level of illumination of the escape routes and open areas are now given in BS EN 1838/BS 5266-7.
A Guide to Emergency Lighting by Chris Watts