Fire extinguisher - Revision history

Designing Buildings at 10:50, 20 November 2020

2020-11-20T10:50:14Z

← Older revision		Revision as of 10:50, 20 November 2020
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	* Approved Document B (Fire Safety).		* Approved Document B (Fire Safety).
	* BS EN 3.		* BS EN 3.
		+	* Extinguishment.
	* Fire blanket.		* Fire blanket.
	* Fire retardant.		* Fire retardant.
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	* Flame retardant.		* Flame retardant.
	* RIBA Plan of Work for Fire Safety.		* RIBA Plan of Work for Fire Safety.
−	* ~~Swarf~~.	+	* Sprinkler.

	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Health_and_safety_/_CDM]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Health_and_safety_/_CDM]] [[Category:Products_/_components]]

Editor at 20:09, 16 November 2020

2020-11-16T20:09:44Z

← Older revision		Revision as of 20:09, 16 November 2020
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	* Flame retardant.		* Flame retardant.
	* RIBA Plan of Work for Fire Safety.		* RIBA Plan of Work for Fire Safety.
		+	* Swarf.

	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Health_and_safety_/_CDM]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Health_and_safety_/_CDM]] [[Category:Products_/_components]]

Designing Buildings at 06:54, 29 September 2020

2020-09-29T06:54:41Z

← Older revision		Revision as of 06:54, 29 September 2020
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	= Introduction =		= Introduction =

−	~~A fire extinguisher is a general term to describe a~~ portable apparatus used to put out small fires in emergency situations. They work by distributing a suitable extinguishant (such as liquid, foam, powder and so on) onto the burning material to cut off its supply of oxygen or suppress the chemical reaction occurring in the flame.	+	Fire extinguishers are portable apparatus used to put out small fires in emergency situations. They work by distributing a suitable extinguishant (such as liquid, foam, powder and so on) onto the burning material to cut off its supply of oxygen or suppress the chemical reaction occurring in the flame.

	= History =		= History =

−	The earliest forms of fire ~~extinguishers~~ were introduced in the Middle Ages. These devices, known as squirts, were pump-like devices with nozzles on the end.	+	The earliest forms of fire extinguisher were introduced in the Middle Ages. These devices, known as squirts, were pump-like devices with nozzles on the end.

−	The nozzle of the pump would be put into water, and a plunger would be used to pull the water into the squirt. The nozzle was then aimed at the fire, and the water stream would be directed towards the fire ~~and released~~.	+	The nozzle of the pump would be put into water, and a plunger would be used to pull the water into the squirt. The nozzle was then aimed at the fire, and the water stream would be directed towards the fire.

	In 1723, Ambrose Godfrey was awarded the first official patent for a fire extinguisher. The German-born British chemist was best known for his production of phosphorus, but in 1724, he published a document entitled ‘New Method of Extinguishing Fires by Explosion and Suffocation’. His idea was to design a machine consisting of a cask of an aqueous solution surrounding a pewter chamber of gunpowder. The idea behind this was that a series of fuses would be detonated which would then make the gunpowder explode and distribute the liquid.		In 1723, Ambrose Godfrey was awarded the first official patent for a fire extinguisher. The German-born British chemist was best known for his production of phosphorus, but in 1724, he published a document entitled ‘New Method of Extinguishing Fires by Explosion and Suffocation’. His idea was to design a machine consisting of a cask of an aqueous solution surrounding a pewter chamber of gunpowder. The idea behind this was that a series of fuses would be detonated which would then make the gunpowder explode and distribute the liquid.
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	= Fire extinguisher categories =		= Fire extinguisher categories =

−	In the UK, fire extinguishers are included in the standard BS EN 3 - Portable fire extinguishers. The extinguishers are colour coded to indicate which type of fires they should be used to extinguish~~. The types and colours are~~:	+	In the UK, fire extinguishers are included in the standard BS EN 3 - Portable fire extinguishers. The extinguishers are colour coded to indicate which type of fires they should be used to extinguish:

	* Water = Red		* Water = Red

Editor at 16:22, 28 September 2020

2020-09-28T16:22:30Z

← Older revision		Revision as of 16:22, 28 September 2020
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	* Approved Document B (Fire Safety).		* Approved Document B (Fire Safety).
		+	* BS EN 3.
	* Fire blanket.		* Fire blanket.
	* Fire retardant.		* Fire retardant.

Editor at 19:45, 25 September 2020

2020-09-25T19:45:04Z

← Older revision		Revision as of 19:45, 25 September 2020
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	{\|		{\|
−	~~\|width="14%"~~\|	+	\|

−	~~\|width="14%"~~\| Class A	+	\| Class A
−	~~\|width="14%"~~\| Class B	+	\| Class B
−	~~\|width="14%"~~\| Class C	+	\| Class C
−	~~\|width="14%"~~\| Class D	+	\| Class D
−	~~\|width="14%"~~\| Class E	+	\| Class E
−	~~\|width="14%"~~\| Class F	+	\| Class F
	\|-		\|-
	\| Water		\| Water
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	* Fire safety.		* Fire safety.
	* Fire safety strategy.		* Fire safety strategy.
−	* Flame retardant.
	* Flame retardant.		* Flame retardant.
	* RIBA Plan of Work for Fire Safety.		* RIBA Plan of Work for Fire Safety.

	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Health_and_safety_/_CDM]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Health_and_safety_/_CDM]] [[Category:Products_/_components]]

Editor at 19:38, 25 September 2020

2020-09-25T19:38:07Z

← Older revision		Revision as of 19:38, 25 September 2020
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	\| Wet chemical		\| Wet chemical
	\| Yes		\| Yes
−	\|	+	\| Based on situation
−	Based on	+
−	situation	+
	\|		\|

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	= Maintenance =		= Maintenance =
		+
		+	Fire extinguishers should be checked and maintained on a regular basis. While it’s uncommon for a device to have an expiration date, its reliability can degrade over time if it has not been properly maintained.

	In the UK, there are three types of required maintenance:		In the UK, there are three types of required maintenance:
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	* Extended. Five year test discharge and recharge.		* Extended. Five year test discharge and recharge.
	* Overhaul: 10 year test for CO2 extinguishers.		* Overhaul: 10 year test for CO2 extinguishers.
−
−	Fire extinguishers should be checked and maintained on a regular basis. While it’s uncommon for a device to have an expiration date, its reliability can degrade over time if it has not been properly maintained.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

Editor at 19:35, 25 September 2020

2020-09-25T19:35:51Z

← Older revision		Revision as of 19:35, 25 September 2020
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	* Carbon dioxide = Red with black panel above the operating instructions.		* Carbon dioxide = Red with black panel above the operating instructions.
	* Wet chemical (generally containing potassium acetate with potassium citrate or potassium bicarbonate) = Red with a bright yellow panel above the operating instructions.		* Wet chemical (generally containing potassium acetate with potassium citrate or potassium bicarbonate) = Red with a bright yellow panel above the operating instructions.
−	* Class D powder (generally a ~~mix of~~ mix of monoammonium phosphate and ammonium sulfate, but only for combustible fires) = Red with blue panel above the operating instructions.	+	* Class D powder (generally a mix of monoammonium phosphate and ammonium sulfate, but only for combustible fires) = Red with blue panel above the operating instructions.

	= Six fire classes =		= Six fire classes =
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	The UK recognises six fire classes:		The UK recognises six fire classes:

−	Class A fires involve organic solids such as paper and wood.	+	# Class A fires involve organic solids such as paper and wood.
−		+	# Class B fires involve flammable or combustible liquids, including petrol, grease and oil.
−	Class B fires involve flammable or combustible liquids, including petrol, grease, and oil.	+	# Class C fires involve flammable gases.
−		+	# Class D fires involve combustible metals.
−	Class C fires involve flammable gases.	+	# Class E fires involve electrical equipment/appliances.
−		+	# Class F fires involve cooking fat and oil.
−	Class D fires involve combustible metals.	+
−		+
−	Class E fires involve electrical equipment/appliances.	+
−		+
−	Class F fires involve cooking fat and oil.	+

	{\|		{\|
−	\|	+	\|width="14%"\|

−	\| Class A	+	\|width="14%"\| Class A
−	\| Class B	+	\|width="14%"\| Class B
−	\| Class C	+	\|width="14%"\| Class C
−	\| Class D	+	\|width="14%"\| Class D
−	\| Class E	+	\|width="14%"\| Class E
−	\| Class F	+	\|width="14%"\| Class F
	\|-		\|-
	\| Water		\| Water
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	\| Wet chemical		\| Wet chemical
	\| Yes		\| Yes
−	\| Based on~~<br />~~	+	\|
		+	Based on
	situation		situation
	\|		\|
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	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

−	* Approved Document B (Fire Safety)	+	* Approved Document B (Fire Safety).
−	* BS 9999: Code of practice for fire safety in the design, management and use of buildings	+	* Fire blanket.
−	* Fire blanket	+	* Fire retardant.
−	* Fire retardant	+	* Fire safety.
−	* Fire safety	+	* Fire safety strategy.
−	* Fire safety strategy	+
	* Flame retardant.		* Flame retardant.
−	* Flame retardant	+	* Flame retardant.
−	* RIBA Plan of Work for Fire Safety	+	* RIBA Plan of Work for Fire Safety.
		+
		+	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Health_and_safety_/_CDM]] [[Category:Products_/_components]]

Editor at 19:33, 25 September 2020

2020-09-25T19:33:00Z

← Older revision		Revision as of 19:33, 25 September 2020
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	{\|		{\|
−	\| ~~Type~~	+	\|
		+
	\| Class A		\| Class A
	\| Class B		\| Class B
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	\| Wet chemical		\| Wet chemical
	\| Yes		\| Yes
−	\| ~~Conditional~~	+	\| Based on<br />
		+	situation
	\|		\|

Editor at 19:31, 25 September 2020

2020-09-25T19:31:09Z

← Older revision		Revision as of 19:31, 25 September 2020
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	\|-		\|-
−	\| ~~Carbondioxide~~	+	\| Carbon dioxide
	\|		\|

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	\| Wet chemical		\| Wet chemical
	\| Yes		\| Yes
−	\| ~~Sometimes~~	+	\| Conditional
	\|		\|

Editor at 19:28, 25 September 2020

2020-09-25T19:28:39Z

← Older revision		Revision as of 19:28, 25 September 2020
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−	[[File:FireExtMany.jpg]]	+	[[File:FireExtMany.jpg\|link=File:FireExtMany.jpg]]

	= Introduction =		= Introduction =
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	{\|		{\|
−	~~\|width="100%"~~\| [[File:FireExt1928.jpg]]	+	\| [[File:FireExt1928.jpg\|link=File:FireExt1928.jpg]]
	\|-		\|-
	\| The 1924 carbon dioxide extinguisher invented by the Walter Kidde Company was made to put out fires in telephone switchboards. The device consisted of a metal cylinder with a wheel valve and a brass hose covered with cotton. The extinguisher in this photograph was made by the Walter Kidde Company for Bell Telephone in 1928.		\| The 1924 carbon dioxide extinguisher invented by the Walter Kidde Company was made to put out fires in telephone switchboards. The device consisted of a metal cylinder with a wheel valve and a brass hose covered with cotton. The extinguisher in this photograph was made by the Walter Kidde Company for Bell Telephone in 1928.
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	= Fire extinguisher categories =		= Fire extinguisher categories =

−	In the UK, fire extinguishers are included in the standard BS EN 3. The extinguishers are colour coded to indicate which type of fires they should be used to extinguish. The types and colours are:	+	In the UK, fire extinguishers are included in the standard BS EN 3 - Portable fire extinguishers. The extinguishers are colour coded to indicate which type of fires they should be used to extinguish. The types and colours are:

−	Water = Red	+	* Water = Red
−		+	* Foam = Red with cream panel above the operating instructions
−	Foam ~~(containing foam, water and air)~~ = Red with cream panel above the operating instructions	+	* Dry powder (generally a mix of monoammonium phosphate and ammonium sulfate, but not for combustible fires) = Red with blue panel above the operating instructions
−		+	* Carbon dioxide = Red with black panel above the operating instructions.
−	Dry powder (generally a mix of monoammonium phosphate and ammonium sulfate, but not for combustible fires) = Red with blue panel above the operating instructions	+	* Wet chemical (generally containing potassium acetate with potassium citrate or potassium bicarbonate) = Red with a bright yellow panel above the operating instructions.
−		+	* Class D powder (generally a mix of mix of monoammonium phosphate and ammonium sulfate, but only for combustible fires) = Red with blue panel above the operating instructions.
−	Carbon dioxide = Red with black panel above the operating instructions.	+
−		+
−	Wet chemical (generally containing potassium acetate with potassium citrate or potassium bicarbonate) = Red with a bright yellow panel above the operating instructions.	+
−		+
−	Class D powder (generally a mix of mix of monoammonium phosphate and ammonium sulfate, but only for combustible fires) = Red with blue panel above the operating instructions.	+

	= Six fire classes =		= Six fire classes =
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	Class F fires involve cooking fat and oil.		Class F fires involve cooking fat and oil.
		+
		+	{\|
		+	\| Type
		+	\| Class A
		+	\| Class B
		+	\| Class C
		+	\| Class D
		+	\| Class E
		+	\| Class F
		+	\|-
		+	\| Water
		+	\| Yes
		+	\|
		+
		+	\|
		+
		+	\|
		+
		+	\|
		+
		+	\|
		+
		+	\|-
		+	\| Foam
		+	\| Yes
		+	\| Yes
		+	\|
		+
		+	\|
		+
		+	\|
		+
		+	\|
		+
		+	\|-
		+	\| Dry powder
		+	\| Yes
		+	\| Yes
		+	\| Yes
		+	\|
		+
		+	\| Yes
		+	\|
		+
		+	\|-
		+	\| Carbondioxide
		+	\|
		+
		+	\| Yes
		+	\|
		+
		+	\|
		+
		+	\| Yes
		+	\|
		+
		+	\|-
		+	\| Wet chemical
		+	\| Yes
		+	\| Sometimes
		+	\|
		+
		+	\|
		+
		+	\|
		+
		+	\| Yes
		+	\|-
		+	\| Class D powder
		+	\|
		+
		+	\|
		+
		+	\|
		+
		+	\| Yes
		+	\|
		+
		+	\|
		+
		+	\|}

	While the powder inside fire extinguishers is non-toxic, contact should be limited. Precautions should be taken to minimise incidents where these circumstances could occur.		While the powder inside fire extinguishers is non-toxic, contact should be limited. Precautions should be taken to minimise incidents where these circumstances could occur.

	= Maintenance =		= Maintenance =
−
−	Fire extinguishers should be checked and maintained on a regular basis. While it’s uncommon for a device to have an expiration date, its reliability can degrade over time if it has not been properly maintained.

	In the UK, there are three types of required maintenance:		In the UK, there are three types of required maintenance:
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	* Extended. Five year test discharge and recharge.		* Extended. Five year test discharge and recharge.
	* Overhaul: 10 year test for CO2 extinguishers.		* Overhaul: 10 year test for CO2 extinguishers.
		+
		+	Fire extinguishers should be checked and maintained on a regular basis. While it’s uncommon for a device to have an expiration date, its reliability can degrade over time if it has not been properly maintained.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =