Detectors 204
Detectors 204 : Particle Detectors: (4.26) Smoke Detector: (2) Design: (2.5) Performance Differences: Photoelectric smoke detectors respond faster (typically 30 minutes or more) to fire in its early, smouldering stage (before it breaks into flame). The smoke from the smouldering stage of a fire is typically made up of large combustion particles between 0. 3 and 10. 0 ?m. Ionization smoke detectors respond faster (typically 30-60 seconds) in the flaming stage of a fire. The smoke from the flaming stage of a fire is typically made up of microscopic combustion particles between 0. 01 and 0. 3 ?m. Also, ionization detectors are weaker in high air-flow environments, and because of this, the photoelectric smoke detector is more reliable for detecting smoke in both the smoldering and flaming stages of a fire. In June, 2006 the Australasian Fire & Emergency Service Authorities Council, the peak representative body for all Australian and New Zealand Fire Departments published an official report, 'Position on Smoke Alarms in residential Accomodation'. Clause 3. 0 states, "Ionization smoke alarms may not operate in time to alert occupants early enough to escape from smouldering fires". In August, 2008 the International Association of Fire Fighters (IAFF-300,000+ members throughout the USA and Canada) passed a Resolution recommending the use of photoelectric smoke alarms. The IAFF states that changing to photoelectric alarms, "Will drastically reduce the loss of life among citizens and fire fighters". In June, 2010 the City of Albany, California enacted photoelectric legislation after a unanimous decision by the Albany City Council. This was a catalyst for several other Californian and Ohioan cities to enact legislation requiring photoelectric smoke detectors
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