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Health and Safety CHST Exam Preparation HHQuestions With Complete Solutions
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Health and Safety CHST Exam Preparation HHQuestions With Complete Solutions
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Health and Safety CHST Exam Preparation QuestionsHHWith Complete Solutions
What are the elements of fire? Correct Answers Oxygen, Heat,
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Fuel
Name the 4 fuel sources Correct Answers Ordinary
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combustibles: trash, wood, paper, cloth
What class of fire comes from trash, wood, paper and cloth
Correct Answers Class A
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What class of fire comes from Flammable liquids Correct HH
Answers Class B
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What class of fire comes from Electricity? Correct Answers
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Class C
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What class of fire comes from burning metals? Magnesium,
titanium Correct Answers Class D
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What is the symbol for Class A Correct Answers Green
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triangle
What is the symbol for Class B Correct Answers Red square
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What is the symbol for Class C Correct Answers Blue circle
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What is the symbol for Class D Correct Answers Yellow Star
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, What is needed for a fire extinguisher to be effective? Correct
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Answers *must be right extinguisher for the type of fire
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*must be located where it can be easily reached
*must be in good working order
*the fire must be discovered while it is still small
*the person using the extinguisher must be trained to use it
properly
Name Fire extinguishing methods: Correct Answers 1.
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Cooling: water is used to cool the burning material below the
temperature at which it starts to burn
2. Smothering: carbon dioxide (CO₂) or foaming agents are used
to smother the burning material so that air is excluded
3. Disrupting the chemical chain reaction or interrupting the
flame: dry chemicals are used
4. Removing the fuel source: eg. turning off a fuel line
How to use a fire extinguisher: Correct Answers 1- Hold
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upright, pull ring pin
2- Start back at 10 feet, aim at base of fire
3- Squeeze lever, sweep side to side
Extinguisher Location Correct Answers *Visible: operating
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instructions and identification marks
*Easily reached: not blocked
*In or near corridors or aisles leading to exits
*Close to potential fire hazards
*Not be damaged by moving trucks, cranes, work activities,
corroded by chemical processes
*Protected against the elements
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