BS 5839 - 2002 Fire Detection

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Additional info for BS 5839 - 2002 Fire Detection

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In a staged fire alarm system, the initial warning of fire is given in a restricted area, or is restricted to key personnel, but can be extended in further stages to warn, ultimately, all occupants of the premises. The arrangement might apply regardless of whether the alarm is triggered by a manual call point or an automatic fire detector, or it might apply only to alarm signals triggered by automatic fire detectors. 38 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy No reproduction or networking permitted without license from IHS --`,,,`,`-`-`,,`,,`,`,,`--- © BSI 16 December 2004 Not for Resale Section 2 BS 5839-1:2002 There are various circumstances in which a staged fire alarm arrangement may be appropriate.

In hospitals), a secondary, automatic means of transmission might be warranted, unless there are adequate arrangements to ensure that there will be no delay at any time in manual summoning of the fire service by occupants. © BSI 16 December 2004 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy No reproduction or networking permitted without license from IHS 29 Not for Resale Section 2 BS 5839-1:2002 Even in a Category L system, if the premises are unoccupied at certain times and the system incorporates automatic fire detection throughout a significant proportion of the premises, it can represent a missed opportunity, in respect of property protection, if no means of automatic transmission of alarm signals is provided.

B) If the total floor area of the building is greater than 300 m2, each zone should be restricted to a single storey. c) If the total floor area of the building is less than 300 m2 a zone may cover more than a single storey. d) For voids above or below the floor area of a room, these may be included within the same zone of the room, provided that the voids and the room constitute a single fire compartment. g. an uncompartmented warehouse), which should not exceed 10 000 m2 in area. 3 Additional recommendations applicable to detection zones that contain non-addressable automatic fire detectors The following recommendations are applicable.

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