Fire and Explosion. Occupational Health and Safety The occupational health and safety act has a section that deals with fire and explosion on the job,

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1 Fire and Explosion

2 Occupational Health and Safety The occupational health and safety act has a section that deals with fire and explosion on the job, it states that… 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 presence of volatile or flammable substances, gases or vapors, the employer shall institute a system of inspections and tests to determine whether they are present before any work is undertaken. (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 ventilation or other effective means. (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 ventilation or other effective means. (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 existing or potential sources of ignition shall be controlled or eliminated. (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 existing or potential sources of ignition shall be controlled or eliminated.

3 Section #1 FIRE.

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

5 Section #1 FIRE. There are 5 different classes of fires that can pose a threat in the workplace. Each of which have a different fire extinguisher to be used. There are 5 different classes of fires that can pose a threat in the workplace. Each of which have a different fire extinguisher to be used. The first class of fire is… The first class of fire is… CLASS A: Ordinary Combustibles. Which are fires such as wood fires or any other ordinary material that can catch on fire. CLASS A: Ordinary Combustibles. Which are fires such as wood fires or any other ordinary material that can catch on fire.

6 Section #1 FIRE. The second class of fires is… CLASS B: Flammable Liquids/Gases, these fires are ones that involve flammable liquids that cannot be put out by regular means that are used in Class A fires. CLASS B: Flammable Liquids/Gases, these fires are ones that involve flammable liquids that cannot be put out by regular means that are used in Class A fires.

7 Section #1 FIRE. The third class of fire is… CLASS C: Electrical Equipment Fires. CLASS C: Electrical Equipment Fires. These fires are ones that come from equipment such as power lines and transformers. These types would be especially watched over in this town because of what this company works at These fires are ones that come from equipment such as power lines and transformers. These types would be especially watched over in this town because of what this company works at

8 Section #1 FIRE. The fourth class of fire out of the 5 types is… CLASS D: Combustible Metals. This type of fire is a fire where a metal used in the workplace is unstable and catches on fire. Or the metal could be stationary and because of certain environment conditions, and its chemical compound it could spontaneously react and combust. This type of fire is a fire where a metal used in the workplace is unstable and catches on fire. Or the metal could be stationary and because of certain environment conditions, and its chemical compound it could spontaneously react and combust.

9 Section #1 FIRE. There are now 2 main types of Fire Extinguishers used for the 4 classes of fire. There is a Fire Extinguisher which can be used for class A, B, and C fires. There are now 2 main types of Fire Extinguishers used for the 4 classes of fire. There is a Fire Extinguisher which can be used for class A, B, and C fires. Then for a class D fire there is a separate extinguisher which is used. Then for a class D fire there is a separate extinguisher which is used.

10 Section #1 FIRE In the case that a person needs to utilize either type of extinguisher they should use the P.A.S.S technique to extinguish the fire. In the case that a person needs to utilize either type of extinguisher they should use the P.A.S.S technique to extinguish the fire. P  Pull P  Pull A  Aim A  Aim S  Squeeze S  Squeeze S  Sweep S  Sweep

11 Section #1 FIRE. Fires vary in temperature depending on three different variables, amount of Oxygen, the amount of fuel, and heat.

12 Section #1 FIRE. The first category of fire is the red flame. The table of temperatures for the red flame goes as follows… The first category of fire is the red flame. The table of temperatures for the red flame goes as follows… Red Just 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)

13 Section #1 FIRE. The second type of flame, the next hottest up from Red is Orange. The second type of flame, the next hottest up from Red is Orange. Orange Deep: 1100 °C (2010 °F) Clear: 1200 °C (2190 °F)

14 Section #1 FIRE. The hottest color of flame is the white flame and the temperatures go as follows… The hottest color of flame is the white flame and the temperatures go as follows… White Whitish: 1300 °C (2370 °F) Bright: 1400 °C (2550 °F) Dazzling: 1500 °C (2730 °F)

15 Section #2 EXPLOSION

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

17 Section #2 EXPLOSION There are several different types of explosions that can happen, some more common in the workplace then others. Most of which are not even possible to occur in everyday circumstances. There are several different types of explosions that can happen, some more common in the workplace then others. Most of which are not even possible to occur in everyday circumstances.

18 Section #2 EXPLOSIONS The first type of explosion is… Natural Explosions: These are explosions that occur in nature such as volcanic eruptions, and explosions during forest fires from the igniting of oils in the tree tops. Natural Explosions: These are explosions that occur in nature such as volcanic eruptions, and explosions during forest fires from the igniting of oils in the tree tops.

19 Section #2 EXPLOSIONS The second type is… Chemical Explosions: These are the most common types of explosions that occur, mostly in areas that use it during the job operation such as ammunition testing areas. This type includes such explosions like Gunpowder, TNT, and Dynamite

20 Section #2 EXPLOSION The third type of explosion is… Nuclear Explosions: is an explosion derived from the fission or fusion in a nuclear reaction, even the smallest nuclear weapon is powerful enough to destroy an entire city, making them a deadly hazard. Nuclear Explosions: is an explosion derived from the fission or fusion in a nuclear reaction, even the smallest nuclear weapon is powerful enough to destroy an entire city, making them a deadly hazard.

21 Section #2 EXPLOSION The fourth type of explosion is … Electrical Explosion: excessive magnetic pressure within an ultra-strong electromagnet can cause a magnetic explosion, or a electrical one. A lightning bolt is another form of electrical explosion. Electrical Explosion: excessive magnetic pressure within an ultra-strong electromagnet can cause a magnetic explosion, or a electrical one. A lightning bolt is another form of electrical explosion.

22 Section #2 EXPLOSION The fifth type of explosion is a … Astronomical Explosion: Astronomical explosions, even though being the biggest type of explosion are also the least possible to occur in normal circumstances. Astronomical Explosion: Astronomical explosions, even though being the biggest type of explosion are also the least possible to occur in normal circumstances.

23 Section #2 EXPLOSION The final type of explosion is … Mechanical Explosions: These are completely physical, mechanical explosions occur when a tightly sealed container under pressure encounters a break, at which point it releases its gases or liquids rapidly causing an explosion. Mechanical Explosions: These are completely physical, mechanical explosions occur when a tightly sealed container under pressure encounters a break, at which point it releases its gases or liquids rapidly causing an explosion.

24 Conclusion 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. 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.

25 BIBLIOGRAPHY http://en.wikipedia.org/wiki/Fire#Fire_classifications  Info  Info http://en.wikipedia.org/wiki/Explosions http://en.wikipedia.org/wiki/Explosionshttp://en.wikipedia.org/wiki/Explosions www.google.comwww.google.com  Pictures www.google.com