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- Flame_supervision_device abstract "For gas appliances, a flame supervision device (FSD) – alternative name: flame failure device (FFD) – is a general term for any device designed to stop flammable gas going to the burner of a gas appliance if the flame is extinguished. This is to prevent a dangerous buildup of gas within the appliance, its chimney or the room. Causes of flame failure include chimney downdraught, temporary interruption of the gas supply, gas under-pressure, liquid overspill on cooker hotplates or the draught from an oven door being opened and closed.FSDs may utilize one of several technologies: thermoelectric valves, flame conductance, flame rectification, ultraviolet sensing devices and liquid expansion valves. FSDs are found on all modern gas appliances.Cooker hotplates may not have a FSD on each burner. If a hotplate is to be used in a multi-occupancy building every burner must have its own FSD.When the FSD activates it should stop (or reduce to safe levels) gas flow to the burner until it is reset manually.Older devices, such as bimetallic strips, were used in conjunction with pilot lights. The pilot light is no longer used in new devices, but may still be encountered on old appliances still in service. Pilot lights were withdrawn for two reasons: their continual small flame represented a waste of fuel and also the FSD protected only the main burner, not the pilot. If the pilot was extinguished, there was still the risk of a small gas leakage.Regular testing of FSD is a part of routine maintenance for gas appliances.Other safety devices may be fitted in addition to an FSD. One type of these are the Vititation Sensing Devices, that detect an adequate supply of oxygen for efficient combustion, thus avoiding the production of poisonous carbon monoxide. As well as detecting a blocked supply of oxygen, these must also detect a blocked exhaust or reversed flow in the exhaust flue owing to wind conditions. Two methods are used to provide these, an Oxygen Depletion System (ODS) that measures the availability of oxygen for combustion or an Atmospheric Sensing Device (ASD) measures excess heat rise in the exhaust.".
- Flame_supervision_device wikiPageExternalLink gas_flame_supervision_devices.aspx.
- Flame_supervision_device wikiPageID "36751489".
- Flame_supervision_device wikiPageLength "3124".
- Flame_supervision_device wikiPageOutDegree "18".
- Flame_supervision_device wikiPageRevisionID "703153138".
- Flame_supervision_device wikiPageWikiLink Boiler.
- Flame_supervision_device wikiPageWikiLink Carbon_monoxide.
- Flame_supervision_device wikiPageWikiLink Category:Gas_technologies.
- Flame_supervision_device wikiPageWikiLink Category:Home_appliances.
- Flame_supervision_device wikiPageWikiLink Chimney.
- Flame_supervision_device wikiPageWikiLink Flame.
- Flame_supervision_device wikiPageWikiLink Flame_conductance.
- Flame_supervision_device wikiPageWikiLink Flame_detector.
- Flame_supervision_device wikiPageWikiLink Flame_rectification.
- Flame_supervision_device wikiPageWikiLink Flammability.
- Flame_supervision_device wikiPageWikiLink Gas.
- Flame_supervision_device wikiPageWikiLink Gas_appliance.
- Flame_supervision_device wikiPageWikiLink Oxygen.
- Flame_supervision_device wikiPageWikiLink Pilot_light.
- Flame_supervision_device wikiPageWikiLink Pressure_regulator.
- Flame_supervision_device wikiPageWikiLink Thermocouple.
- Flame_supervision_device wikiPageWikiLink Ultraviolet.
- Flame_supervision_device wikiPageWikiLink Vititation_Sensing_Device.
- Flame_supervision_device wikiPageWikiLinkText "Flame supervision device".
- Flame_supervision_device wikiPageWikiLinkText "flame failure device".
- Flame_supervision_device wikiPageWikiLinkText "flame supervision device".
- Flame_supervision_device wikiPageUsesTemplate Template:Citation_needed.
- Flame_supervision_device wikiPageUsesTemplate Template:Commons_category.
- Flame_supervision_device wikiPageUsesTemplate Template:Reflist.
- Flame_supervision_device subject Category:Gas_technologies.
- Flame_supervision_device subject Category:Home_appliances.
- Flame_supervision_device hypernym Term.
- Flame_supervision_device type Machine.
- Flame_supervision_device type Technology.
- Flame_supervision_device type Tool.
- Flame_supervision_device comment "For gas appliances, a flame supervision device (FSD) – alternative name: flame failure device (FFD) – is a general term for any device designed to stop flammable gas going to the burner of a gas appliance if the flame is extinguished. This is to prevent a dangerous buildup of gas within the appliance, its chimney or the room.".
- Flame_supervision_device label "Flame supervision device".
- Flame_supervision_device sameAs Q5457181.
- Flame_supervision_device sameAs m.0l8mj2d.
- Flame_supervision_device sameAs Q5457181.
- Flame_supervision_device wasDerivedFrom Flame_supervision_device?oldid=703153138.
- Flame_supervision_device isPrimaryTopicOf Flame_supervision_device.