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23 Cards in this Set
- Front
- Back
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Propane and butane can be transported in the same cylinder at different times T or F |
False |
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Hoses used for transferring LPG between containers must be hydrostaticly tested at least once per year. T or F |
True |
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During loading, samples are taken of the hydrocarbon liquid through the top opening. T or F |
False |
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The temperature of a flame from a match is typically about ______ degrees C whereas the temp of an electric arc may be over _______ degrees C |
870, 5000 |
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Switch loading causes ______ % of all loading rack truck fires. |
90 |
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The flammable range is wider at higher pressures and or temperatures. T or F |
True |
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If the fuel is heated to a temperature at which vapours are produced, it is at or above its ________ |
Flash point |
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The _ _ _ _ temperature is the lowest temperature at which a fuel/air mixture will burn or explode. |
Ignition |
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Iron sulfide, the product of a chemical reaction involving iron and hydrogen sulphide. If it is allowed to _______ _____, it will burst into flame in the presence of air. |
Dry out |
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The __________ effect of fresh metallic surfaces can cause ignition has been proven under laboratory conditions |
Catalytic |
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Highly refined hrdrocarbon liquid products, having a high flash point are excellent generators of ______ ________ |
Static electricity |
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The space left above the surface of the liquid is called an ________ |
Outage |
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Tank foam over. Foam usually forms when water vaporizes below the surface of oil having a low specific gravity T or F |
True |
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In OH and S safety guidelines for handling sour gas, bulk is defined as quantities of ______ litres or greater |
454 |
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Natural gas has an ignition temperature of: A) 1 700ºC B) 540ºC C) 360ºC D) 260ºC E) 650ºC
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E) 650ºC |
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When combined with air, methane has a flammable limit of between: A) 0.7 - 5.0% B) 5.0 - 15% C) 2.2 - 9.5% D) 1.1 - 7.5% E) 4.3 - 45.5%
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B) 5.0 - 15% |
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Laws governing the storage and transportation of LPG are enforced by the: A) Federal and Provincial DOT B) Provincial Department of Labor C) CSA D) Provincial OH&S E) Bureau of Explosives
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A) Federal and Provincial DOT |
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The flash point of a liquid is the temperature which: A) The liquid will burn B) It will form a gas and burn C) All molecular vibration will cease D) Spontaneous combustion will occur E) The vapors become inert
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B) It will form a gas and burn |
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If a fuel/air mixture is raised above its ignition temperature, the mixture: A) Will not start burning by auto-ignition B) Will require a source of ignition in order to burn C) Will ignite only if static electricity is present D) May ignite without a source of ignition E) Will not burn, only explode |
D) May ignite without a source of ignition
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The flash point of a liquid is the temperature which: A) Spontaneous combustion will occur B) All molecular vibration will cease C) It will form a gas and burn D) The liquid will burn E) The vapors become inert |
C) It will form a gas and burn |
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The explosion of a flammable mixture that occurred at the exact time a valve was opened was likely due to: A) The auto ignition temperature B) A rich mixture being formed C) Static electricity D) The flash point being reached E) The catalytic effect of fresh metallic surfaces |
E) The catalytic effect of fresh metallic surfaces |
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A flammable limit of a fuel/air mixture is: A) The percentage by weight of air in the mixture B) No indication of its combustion properties C) The percentage by volume of fuel in the mixture D) The percentage by volume of air in the mixture E) The percentage by mass of fuel in the mixture
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C) The percentage by volume of fuel in the mixture |
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If the fuel amount is below the lower flammable limit, the mixture: A) Must have a source of ignition B) Is explosive C) Will not burn rapidly D) Can be called rich E) Is said to be lean |
E) Is said to be lean |
