Manual fire alarm activation: Difference between revisions

Revision as of 10:00, 20 August 2022

Revision as of 10:03, 20 August 2022

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'''Manual fire alarm activation''' is typically achieved through the use of a pull station (USA & Canada) or call point (Europe, Australia, and Asia), which then sounds the [[Fire alarm notification appliance|evacuation alarm]] for the relevant building or zone. Manual fire alarm activation requires [[human]] intervention, as distinct from automatic fire alarm activation such as that provided through the use of [[heat detector]]s and [[smoke detector]]s. It is, however, possible for call points/pull stations to be used in conjunction with automatic detection as part of the overall [[Fire alarm system|fire detection and alarm system]]. Systems in completed [[building]]s tend to be wired in and include a control panel. Systems for use during construction can also be wireless or mechanical, it is recommended by the Structural Timber Association in the UK that for timber-framed constructions, interconnecting wireless systems be used.<ref>{{Cite web|url = http://www.structuraltimber.co.uk/information-centre/information-centre/downloads/health-and-safety/|title = Structural Timber Association - 16 Steps to Fire Safety|date = |accessdate = 2015-04-17|website = Structural Timber Association|publisher = |last = |first = |archive-url = https://web.archive.org/web/20140716165530/http://www.structuraltimber.co.uk/information-centre/information-centre/downloads/health-and-safety/|archive-date = 2014-07-16|url-status = dead}}</ref>

== Fire alarm pull stationSercoin ==

A '''fire alarm pull station''' is an [[active fire protection]] device, usually wall-mounted, that, when activated, initiates an alarm on a [[fire alarm]] system. In its simplest form, the user activates the alarm by pulling the handle down, which completes a circuit and locks the handle in the activated position, sending an alarm to the [[fire alarm control panel]]. After operation, most fire alarm pull stations must be restored to the ready position using a special tool or key for the panel to be reset. Primitive manual stations, requiring only a single action or hand motion to activate, can be subject to unwanted activation by jarring or accidental contact. Early strategies to cope with this problem included requiring the operator to break a pane of glass to release an internal spring-operated mechanism. Manual pull stations that require two hand motions, such as lift up and pull down, or push in and pull down, have since replaced the break-glass and single-action models in many modern installations.