Fire and explosion

Fire and ExplosionFire and Explosion

Occupational Health and Occupational Health and SafetySafety

The occupational health and safety act has a section that deals with fire and The occupational health and safety act has a section that deals with fire and explosion on the job, it states that…explosion on the job, it states that…

45. (1) When workers are employed in or about bilges, tanks, compartments or 45. (1) When workers are employed in or about bilges, tanks, compartments or cargo spaces of marine equipment and where there is a possibility of the cargo spaces of marine equipment and where there is a possibility of the presence of volatile or flammable substances, gases or vapors, the employer presence of volatile or flammable substances, gases or vapors, the employer shall institute a system of inspections and tests to determine whether they shall institute a system of inspections and tests to determine whether they are present before any work is undertaken.are present before any work is undertaken.

(2) Where volatile or flammable substances gases or vapors are present, or (2) Where volatile or flammable substances gases or vapors are present, or arise from the work process, the hazard shall be removed or controlled by arise from the work process, the hazard shall be removed or controlled by ventilation or other effective means.ventilation or other effective means.

(3) Where volatile flammable substances, gases or vapors are present, or arise (3) Where volatile flammable substances, gases or vapors are present, or arise out of materials and equipment used, or arise from the work process, all out of materials and equipment used, or arise from the work process, all existing or potential sources of ignition shall be controlled or eliminated.existing or potential sources of ignition shall be controlled or eliminated.

Section #1Section #1FIRE.FIRE.


Fire prevention in the workplace starts Fire prevention in the workplace starts out with a knowledge of knowing the out with a knowledge of knowing the different types of fires and how to control different types of fires and how to control them in the case of an emergency. them in the case of an emergency.


There are 5 different classes of fires that There are 5 different classes of fires that can pose a threat in the workplace. Each can pose a threat in the workplace. Each of which have a different fire of which have a different fire extinguisher to be used.extinguisher to be used.

The first class of fire is…The first class of fire is…

CLASS ACLASS A: Ordinary Combustibles. : Ordinary Combustibles. Which are fires such as wood fires or Which are fires such as wood fires or any other ordinary material that can any other ordinary material that can catch on fire. catch on fire.

Section #1 Section #1 FIRE.FIRE.

The second class of fires is…The second class of fires is…

CLASS BCLASS B: Flammable Liquids/Gases, : Flammable Liquids/Gases, these fires are ones that involve these fires are ones that involve flammable liquids that cannot be put out flammable liquids that cannot be put out by regular means that are used in Class by regular means that are used in Class A fires.A fires.


The third class of fire is…The third class of fire is…

CLASS CCLASS C: Electrical Equipment Fires.: Electrical Equipment Fires.

These fires are ones that come from These fires are ones that come from equipment such as power lines and equipment such as power lines and transformers. These types would be transformers. These types would be especially watched over in this town especially watched over in this town because of what this company works atbecause of what this company works at


The fourth class of fire out of the 5 types The fourth class of fire out of the 5 types is…is…

CLASS DCLASS D: Combustible Metals.: Combustible Metals.

This type of fire is a fire where a metal This type of fire is a fire where a metal used in the workplace is unstable and used in the workplace is unstable and catches on fire. Or the metal could be catches on fire. Or the metal could be stationary and because of certain stationary and because of certain environment conditions, and its chemical environment conditions, and its chemical compound it could spontaneously react compound it could spontaneously react and combust.and combust.


There are now 2 main types of Fire There are now 2 main types of Fire Extinguishers used for the 4 classes of Extinguishers used for the 4 classes of fire. fire.

There is a Fire Extinguisher which can There is a Fire Extinguisher which can be used for class A, B, and C fires.be used for class A, B, and C fires.

Then for a class D fire there is a separate Then for a class D fire there is a separate extinguisher which is used.extinguisher which is used.

Section #1Section #1FIREFIRE

In the case that a person needs to In the case that a person needs to utilize either type of extinguisher utilize either type of extinguisher they should use the P.A.S.S they should use the P.A.S.S technique to extinguish the fire.technique to extinguish the fire.

P P Pull Pull

A A Aim Aim

S S Squeeze Squeeze

S S Sweep Sweep


Fires vary in temperature depending on three different variables, amount of Oxygen, the Fires vary in temperature depending on three different variables, amount of Oxygen, the amount of fuel, and heat.amount of fuel, and heat.


The first category of fire is the red flame. The first category of fire is the red flame. The table of temperatures for the red The table of temperatures for the red flame goes as follows…flame goes as follows…

RedJust visible: 525 °C (977 °F)

Dull: 700 °C (1290 °F)Cherry, dull: 800 °C (1470 °F)Cherry, full: 900 °C (1650 °F)

Cherry, clear: 1000 °C (1830 °F)


The second type of flame, the next The second type of flame, the next hottest up from Red is Orange.hottest up from Red is Orange.

OrangeDeep: 1100 °C (2010 °F)Clear: 1200 °C (2190 °F)


The hottest color of flame is the white The hottest color of flame is the white flame and the temperatures go as flame and the temperatures go as follows…follows…

WhiteWhitish: 1300 °C (2370 °F)Bright: 1400 °C (2550 °F)

Dazzling: 1500 °C (2730 °F)

Section #2Section #2EXPLOSIONEXPLOSION


Explosions can range in power to a minor Explosions can range in power to a minor release of air in a piece of wood while on release of air in a piece of wood while on fire to a supernova in space.fire to a supernova in space.


There are several different types of There are several different types of explosions that can happen, some more explosions that can happen, some more common in the workplace then others. common in the workplace then others. Most of which are not even possible to Most of which are not even possible to occur in everyday circumstances.occur in everyday circumstances.

Section #2Section #2EXPLOSIONSEXPLOSIONS

The first type of explosion is…The first type of explosion is…

Natural ExplosionsNatural Explosions: These are : These are explosions that occur in nature such as explosions that occur in nature such as volcanic eruptions, and explosions volcanic eruptions, and explosions during forest fires from the igniting of oils during forest fires from the igniting of oils in the tree tops.in the tree tops.

Section #2Section #2EXPLOSIONSEXPLOSIONS

The second type is…The second type is…

Chemical ExplosionsChemical Explosions: These are the : These are the most common types of explosions that most common types of explosions that occur, mostly in areas that use it during occur, mostly in areas that use it during the job operation such as ammunition the job operation such as ammunition testing areas. This type includes such testing areas. This type includes such explosions like Gunpowder, TNT, and explosions like Gunpowder, TNT, and DynamiteDynamite


The third type of explosion is…The third type of explosion is…

Nuclear ExplosionsNuclear Explosions: is an explosion : is an explosion derived from the fission or fusion in a derived from the fission or fusion in a nuclear reaction, even the smallest nuclear reaction, even the smallest nuclear weapon is powerful enough to nuclear weapon is powerful enough to destroy an entire city, making them a destroy an entire city, making them a deadly hazard.deadly hazard.


The fourth type of explosion is …The fourth type of explosion is …

Electrical ExplosionElectrical Explosion: excessive : excessive magnetic pressure within an ultra-strong magnetic pressure within an ultra-strong electromagnet can cause a magnetic electromagnet can cause a magnetic explosion, or a electrical one. A lightning explosion, or a electrical one. A lightning bolt is another form of electrical bolt is another form of electrical explosion.explosion.


The fifth type of explosion is a …The fifth type of explosion is a …

Astronomical ExplosionAstronomical Explosion: Astronomical : Astronomical explosions, even though being the explosions, even though being the biggest type of explosion are also the biggest type of explosion are also the least possible to occur in normal least possible to occur in normal circumstances. circumstances.


The final type of explosion is …The final type of explosion is …

Mechanical ExplosionsMechanical Explosions: These are : These are completely physical, mechanical completely physical, mechanical explosions occur when a tightly sealed explosions occur when a tightly sealed container under pressure encounters a container under pressure encounters a break, at which point it releases its break, at which point it releases its gases or liquids rapidly causing an gases or liquids rapidly causing an explosion.explosion.

ConclusionConclusion

Both fires and explosions can both be dangerous, fires are more prolonged and can be Both fires and explosions can both be dangerous, fires are more prolonged and can be prevented easier then an explosion can be, usually making it a smaller death toll.prevented easier then an explosion can be, usually making it a smaller death toll.

Explosions however, are more sudden and immediate making it very hard to predict. Either Explosions however, are more sudden and immediate making it very hard to predict. Either way though there are precautions that have to be taken to help to prevent them.way though there are precautions that have to be taken to help to prevent them.

BIBLIOGRAPHYBIBLIOGRAPHYhttp://en.wikipedia.org/wiki/Fire#Fire_classificationshttp://en.wikipedia.org/wiki/Fire#Fire_classifications

InfoInfo

http://http://en.wikipedia.org/wiki/Explosionsen.wikipedia.org/wiki/Explosions

www.google.comwww.google.com Pictures Pictures

Fire and explosion

Education

Transcript of Fire and explosion