4AE3 U4 C4 Review
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Questions and Answers

What is the fundamental process involved in combustion?

  • Endothermic reaction
  • Catalytic reaction
  • Electrolytic reaction
  • Exothermic reaction (correct)

    • What is the role of oxygen in combustion?

  • It acts as a reducing agent
  • It acts as a fuel
  • It acts as a catalyst
  • It acts as an oxidizing agent (correct)

    • What is the term for the material that burns in the presence of an oxidizing agent?

  • Catalyst
  • Oxidizing agent
  • Reducing agent (correct)
  • Fuel source

    • What are the four criteria necessary for combustion to occur?

    <p>Fuel, oxygen, ignition, and continuing burn</p> Signup and view all the answers

    What is the byproduct of a completely burned wood log?

    <p>Ashes</p> Signup and view all the answers

    What is the role of heat in sustaining combustion?

    <p>It increases the molecular activity of the fuel</p> Signup and view all the answers

    What is the primary purpose of AFFF in extinguishing a fire?

    <p>To separate the fuel from the air</p> Signup and view all the answers

    What is the primary requirement for liquid fuels to burn?

    <p>Preheating to a high enough temperature</p> Signup and view all the answers

    What type of fire does dry powder extinguishing agent work on?

    <p>Class D fires</p> Signup and view all the answers

    What is the reason why AFFF cannot be used on electrical fires?

    <p>It is conductive</p> Signup and view all the answers

    What is the characteristic of combustion in the charcoal phase of a solid fuel fire?

    <p>Nearly invisible flames</p> Signup and view all the answers

    What is the major threat to life from a fire?

    <p>All of the above</p> Signup and view all the answers

    What is the advantage of Halotron over Halon?

    <p>It has fewer negative environmental effects</p> Signup and view all the answers

    What is the primary mechanism of Halotron and Halon in extinguishing a fire?

    <p>Interfering with the combustion process</p> Signup and view all the answers

    At what oxygen concentration will a person suffer impaired thinking and reduced muscular coordination?

    <p>17%</p> Signup and view all the answers

    What is the characteristic of Halotron that makes it effective on Class A, B, and C fires?

    <p>It boils at a higher temperature than many other fire-fighting liquids</p> Signup and view all the answers

    Why is it important to stay close to the floor in a fire?

    <p>Where heavier oxygenated air is concentrated</p> Signup and view all the answers

    What is the importance of early detection in fire control?

    <p>To catch a situation early before it develops into something bigger</p> Signup and view all the answers

    What is the result of fresh oxygen feeding hot combustible gases in an enclosed fire area?

    <p>The fire can resume rapidly</p> Signup and view all the answers

    What is the characteristic of flames produced by hydrogen gas?

    <p>Faint and may not be noticeable</p> Signup and view all the answers

    What is the effect of smoke in a fire?

    <p>It causes irritations to the eyes and lungs</p> Signup and view all the answers

    Why do people often behave erratically in fire and emergency situations?

    <p>Due to panic, confusion, and disorientation</p> Signup and view all the answers

    What is required for a self-sustaining, uninhibited chain reaction?

    <p>The fuel must continue to burn and generate heat</p> Signup and view all the answers

    What is the primary function of an oxidizing agent in the combustion process?

    <p>To provide oxygen to the fuel</p> Signup and view all the answers

    Why is it difficult to burn wet wood?

    <p>Because the water in the wood converts to steam and draws heat away from the fire</p> Signup and view all the answers

    What is the most common oxidizing agent?

    <p>Oxygen</p> Signup and view all the answers

    What is the term used to describe the rapid ignition that occurs in an internal combustion engine?

    <p>Detonation</p> Signup and view all the answers

    What is the purpose of a reducing agent in the combustion process?

    <p>To combine with oxygen and burn</p> Signup and view all the answers

    What is the fire tetrahedron?

    <p>A diagram of the four components of fire</p> Signup and view all the answers

    What is the result of incomplete combustion in a boiler?

    <p>The formation of soot</p> Signup and view all the answers

    What is volatile combustible material (VCM)?

    <p>Organic hydrocarbons that become gaseous when heated</p> Signup and view all the answers

    How can a fire be extinguished or prevented?

    <p>By removing one of the four components of fire</p> Signup and view all the answers

    Why do people make mistakes during emergency situations?

    <p>Because they are panicking</p> Signup and view all the answers

    What is the purpose of simulated emergencies in training?

    <p>To teach people how to respond calmly</p> Signup and view all the answers

    What is the acronym REACT used for?

    <p>To respond to fire emergencies</p> Signup and view all the answers

    What is the first step in the REACT method?

    <p>Remove people from immediate danger</p> Signup and view all the answers

    Why are posters containing the REACT steps often displayed in the workplace?

    <p>To provide a reminder to employees in case of a fire emergency</p> Signup and view all the answers

    What is the purpose of fire drills in the workplace?

    <p>All of the above</p> Signup and view all the answers

    What is the role of Power Engineers in a fire emergency?

    <p>To take action as first responders</p> Signup and view all the answers

    What is the purpose of fire alarm zones during construction or maintenance?

    <p>To activate and deactivate fire alarm zones</p> Signup and view all the answers

    What is the reason for regular fire drills across North America?

    <p>To allow employees to practice and memorize fire response procedures</p> Signup and view all the answers

    How many classes of fire are there?

    <p>5</p> Signup and view all the answers

    What is the characteristic of a Class A fire that distinguishes it from other classes of fires?

    <p>It leaves behind ash</p> Signup and view all the answers

    Which of the following is NOT a method of extinguishing a Class A fire?

    <p>Applying oxygen to the area</p> Signup and view all the answers

    What is the primary method of extinguishing a Class A fire?

    <p>Cooling the fire with water</p> Signup and view all the answers

    Why should water not be used to extinguish a Class B fire?

    <p>Water spreads the oil fire and causes it to re-ignite</p> Signup and view all the answers

    What type of fire is caused by electrical connections or arcs?

    <p>Class C fire</p> Signup and view all the answers

    Why is CO2 commonly used to extinguish Class C fires?

    <p>It is a non-conducting medium that prevents electrocution</p> Signup and view all the answers

    What type of fire involves combustible metals?

    <p>Class D fire</p> Signup and view all the answers

    What is the result of applying water to a Class B fire?

    <p>The fire spreads and re-ignites</p> Signup and view all the answers

    Why is halotron used as a replacement for halon gases in fire extinguishers?

    <p>It is an environmentally acceptable alternative</p> Signup and view all the answers

    What is the purpose of using a fire blanket to extinguish a Class A fire?

    <p>To smother the fire by removing oxygen</p> Signup and view all the answers

    What is the primary method by which water extinguishes Class A fires?

    <p>Cooling the combustible material</p> Signup and view all the answers

    Why are extinguishing media used for Class A, B, and C fires ineffective for Class D fires?

    <p>They react with the metal to intensify the fire</p> Signup and view all the answers

    What is the primary method by which carbon dioxide extinguishes Class B and C fires?

    <p>Reducing the oxygen content of the atmosphere</p> Signup and view all the answers

    What is the main advantage of using carbon dioxide as an extinguishing agent?

    <p>It does not leave a residue</p> Signup and view all the answers

    What type of fire occurs with oils and greases common to kitchens?

    <p>Class K fire</p> Signup and view all the answers

    Which type of extinguishing agent is designed primarily for fighting Class K (kitchen) types of grease fires?

    <p>Wet Chemicals</p> Signup and view all the answers

    What is the purpose of the wet chemical extinguishing agent in fighting Class K fires?

    <p>To create a barrier between the hot grease/oil and the air</p> Signup and view all the answers

    What is another term for the removal of fuel in the context of fire extinguishing?

    <p>Isolating the fuel from the oxidizing agent</p> Signup and view all the answers

    What is a common misconception about the use of water in extinguishing Class A fires?

    <p>Water smotheres the fire</p> Signup and view all the answers

    What is a benefit of using multipurpose dry chemicals in fighting fires?

    <p>They can also be used on Class A fires</p> Signup and view all the answers

    What is the term used to describe the fuel that is capable of burning in the presence of an oxidizing agent?

    <p>Reducing agent</p> Signup and view all the answers

    What is the primary reason why combustion can occur in an inert atmosphere with certain fuels?

    <p>The fuel contains enough oxygen</p> Signup and view all the answers

    What is the result of the molecular activity of the reducing agent during combustion?

    <p>The molecular activity increases</p> Signup and view all the answers

    What is the characteristic of the reaction between a fuel and oxygen during combustion?

    <p>Exothermic</p> Signup and view all the answers

    What is the primary role of the air in the combustion process?

    <p>To provide oxygen for oxidation</p> Signup and view all the answers

    What remains after a wood log is completely burned?

    <p>Ashes</p> Signup and view all the answers

    What is the primary mechanism by which AFFF extinguishes a Class A fire?

    <p>It separates the fuel from the oxygen, thereby smothering the fire</p> Signup and view all the answers

    Why is halon no longer used as a fire extinguishing agent?

    <p>It is harmful to people and the environment</p> Signup and view all the answers

    What is the main difference between dry powder and dry chemical extinguishing agents?

    <p>Dry powder is used on Class D fires, while dry chemical is used on Class A and B fires</p> Signup and view all the answers

    What is the primary advantage of Halotron over other halogenated agents?

    <p>It has fewer negative environmental effects</p> Signup and view all the answers

    What is the purpose of using a dry powder extinguishing agent on a Class D fire?

    <p>To cover the metal and prevent oxygen from reaching the burning surface</p> Signup and view all the answers

    Why is AFFF effective on Class B fires?

    <p>It can be directed to spread foam over the oil or grease fire</p> Signup and view all the answers

    What is the primary mechanism by which water extinguishes a Class A fire?

    <p>Cooling the combustible material</p> Signup and view all the answers

    What is the characteristic of the wet chemical extinguishing agent in fighting Class K fires?

    <p>It creates a barrier between the hot grease/oil and the air</p> Signup and view all the answers

    Why is CO2 commonly used to extinguish Class C fires?

    <p>It is a non-conductive extinguishing agent</p> Signup and view all the answers

    What is the primary method by which carbon dioxide extinguishes Class B and C fires?

    <p>Reducing the oxygen content</p> Signup and view all the answers

    What is the benefit of using multipurpose dry chemicals in fighting fires?

    <p>They can also be used on Class A fires</p> Signup and view all the answers

    What is the characteristic of flames produced by Class D fires?

    <p>They are not applicable to Class D fires</p> Signup and view all the answers

    What is the primary mechanism of wet chemicals in extinguishing Class K fires?

    <p>Creating a barrier between the hot grease/oil and the air</p> Signup and view all the answers

    What is the primary requirement for liquid fuels to burn?

    <p>The presence of fuel vapors</p> Signup and view all the answers

    What is the primary mechanism of dry chemicals in extinguishing Class B fires?

    <p>Smothering the fire</p> Signup and view all the answers

    What is the characteristic of Class K fires?

    <p>They involve oils and greases common to kitchens</p> Signup and view all the answers

    What is the primary reason why a fire may not sustain itself even when the fuel is very combustible?

    <p>The heat generated is not sufficient to maintain the temperature required for ignition</p> Signup and view all the answers

    Which of the following oxidizing agents is most commonly found in power plants?

    <p>Oxygen</p> Signup and view all the answers

    What is the primary purpose of having regular fire drills in the workplace?

    <p>To allow employees to practice and memorize fire response procedures</p> Signup and view all the answers

    What is the primary responsibility of Power Engineers in a fire emergency?

    <p>To take action as first responders, if trained</p> Signup and view all the answers

    What is the primary difference between rapid combustion and detonation?

    <p>The rate of heat release</p> Signup and view all the answers

    What is the term used to describe the gaseous organic hydrocarbons that are released when a solid fuel is heated?

    <p>Volatile combustible material</p> Signup and view all the answers

    What is the purpose of the REACT method in responding to a fire?

    <p>To provide a set of steps to follow in a fire emergency</p> Signup and view all the answers

    Why do people often make mistakes during emergency situations?

    <p>Because they are panicking</p> Signup and view all the answers

    Why is it important to maintain a high temperature during combustion?

    <p>To sustain the chemical chain reaction</p> Signup and view all the answers

    What is the purpose of displaying posters containing the REACT steps in the workplace?

    <p>To provide a reminder of the steps to follow in a fire emergency</p> Signup and view all the answers

    What is the primary function of an inert gas in fire extinguishing?

    <p>To deprive the fire of oxygen</p> Signup and view all the answers

    What is the result of people panicking during an emergency situation?

    <p>It can significantly interfere with the ability of others to respond to a fire or other emergencies</p> Signup and view all the answers

    What is the characteristic of a fire that involves the rapid release of heat and light energy?

    <p>Rapid combustion</p> Signup and view all the answers

    What is the purpose of simulated emergencies in training?

    <p>To provide a realistic scenario to practice responding to</p> Signup and view all the answers

    What is the primary reason why soot forms during incomplete combustion?

    <p>The fuel is not fully consumed</p> Signup and view all the answers

    What is the benefit of having employees familiar with the locations of fire alarm pull stations?

    <p>They can respond correctly in an emergency situation</p> Signup and view all the answers

    What is the primary function of a reducing agent in the combustion process?

    <p>To combine with oxygen</p> Signup and view all the answers

    What is the primary difference between a fire and a self-sustaining, uninhibited chain reaction?

    <p>The maintenance of a high temperature</p> Signup and view all the answers

    What is the purpose of providing employees with repeated exposure to emergency situations through practice?

    <p>To allow employees to memorize fire response procedures</p> Signup and view all the answers

    Why are fire drills often initiated by sounding a fire alarm?

    <p>To notify the occupants that they need to exit the building calmly, quickly, and in an orderly manner</p> Signup and view all the answers

    What happens when fresh oxygen is reintroduced into an enclosed fire area?

    <p>The fire can resume rapidly and potentially result in an explosion</p> Signup and view all the answers

    Why is it important for Power Engineers to be trained as first responders to a fire situation?

    <p>They are trained to recognize the importance of quick response in fire situations</p> Signup and view all the answers

    What is the characteristic of flames produced by methanol?

    <p>They are faint and may not be visible depending on the lighting conditions</p> Signup and view all the answers

    What is the primary threat to life from a fire?

    <p>The gaseous products of combustion and depletion of oxygen</p> Signup and view all the answers

    What happens when a solid fuel is reduced to embers?

    <p>Combustion of the remaining glowing carbon takes place with nearly invisible flames</p> Signup and view all the answers

    Why do people often behave erratically in fire and emergency situations?

    <p>They are experiencing panic, confusion, and disorientation</p> Signup and view all the answers

    What is the result of incomplete combustion in a fire?

    <p>The production of toxic gaseous products</p> Signup and view all the answers

    Why is early detection important in fire control?

    <p>It can be the difference between fighting a small fire or a large, tougher to extinguish fire</p> Signup and view all the answers

    What is the primary reason why people may get lost in a familiar layout during a fire?

    <p>They are experiencing panic and disorientation</p> Signup and view all the answers

    What is the characteristic of combustion in the gaseous phase of a solid fuel fire?

    <p>Flames are visible and the fire is self-sustaining</p> Signup and view all the answers

    What is the primary mechanism by which dry chemicals extinguish a Class A fire?

    <p>Coating the fuel with dry chemicals which retard combustion by excluding oxygen</p> Signup and view all the answers

    What is the reason why CO2 is not recommended for use on a Class A fire?

    <p>It dissipates quickly and allows oxygen to access the hot fuel, which can then re-ignite the fire</p> Signup and view all the answers

    What is the effect of applying water to a burning oil?

    <p>The boiling action will cause burning oil to be sprayed on the surrounding surfaces</p> Signup and view all the answers

    What is the primary method of extinguishing a Class C fire?

    <p>Interruption of the combustion chain reaction with non-conducting dry chemicals</p> Signup and view all the answers

    What is the characteristic of a Class A fire that distinguishes it from other classes of fires?

    <p>It leaves behind ash</p> Signup and view all the answers

    Why is halotron used as a replacement for halon gases in fire extinguishers?

    <p>Because it is an environmentally acceptable replacement for halon gases</p> Signup and view all the answers

    What is the primary method by which water extinguishes a Class A fire?

    <p>By cooling the fuel with the water</p> Signup and view all the answers

    What is the characteristic of a Class B fire that distinguishes it from other classes of fires?

    <p>It involves flammable or combustible liquids</p> Signup and view all the answers

    What is the primary method of extinguishing a Class D fire?

    <p>Coating the metal fuel with dry chemicals which retard combustion by excluding oxygen</p> Signup and view all the answers

    What is the effect of using carbon dioxide as an extinguishing agent on a Class A fire?

    <p>It smothers the fire by removing oxygen from the area</p> Signup and view all the answers

    What is the most effective way to deal with a fire?

    <p>Prevent it from occurring in the first place</p> Signup and view all the answers

    What is the purpose of a fire risk assessment?

    <p>To evaluate the risk associated with fire hazards</p> Signup and view all the answers

    What is the role of a competent or qualified individual in fire risk assessment?

    <p>To assess all areas of the plant for fire hazards</p> Signup and view all the answers

    What is the benefit of storing flammable materials in self-contained areas?

    <p>It reduces the risk of a fire occurring</p> Signup and view all the answers

    What is one way to prevent fires from occurring?

    <p>Removing flammable materials from the location</p> Signup and view all the answers

    What is the goal of a fire risk assessment according to the Canadian Centre for Occupational Health and Safety?

    <p>All of the above</p> Signup and view all the answers

    What is the primary purpose of identifying fire hazards in the workplace?

    <p>To evaluate the possibility of a fire starting and the severity of its impact</p> Signup and view all the answers

    What is the primary benefit of regular fire hazard inspections in the workplace?

    <p>To prevent fires from occurring by identifying and controlling hazards</p> Signup and view all the answers

    What is the primary method of preventing fires in a power plant or industrial setting?

    <p>Implementing fire prevention practices and housekeeping</p> Signup and view all the answers

    Why is it important to control fire hazards in the workplace?

    <p>To prevent fires from occurring in the workplace</p> Signup and view all the answers

    What is the primary purpose of evaluating the risk associated with a fire hazard?

    <p>To evaluate the possibility of a fire starting and the severity of its impact</p> Signup and view all the answers

    Why is housekeeping important in preventing fires in the workplace?

    <p>To prevent the buildup of combustible materials</p> Signup and view all the answers

    What is the primary purpose of removing barriers or protective methods in the workplace?

    <p>To ensure that flammable materials are stored in a safe area</p> Signup and view all the answers

    What is the primary role of Power Engineers in preventing fires in the workplace?

    <p>To have special knowledge about safe storage, handling, and precautions when working with fuels</p> Signup and view all the answers

    Why is it important to consider the possibility of temporary placement of hazardous materials in an area?

    <p>To evaluate the possibility of a fire starting and the severity of its impact</p> Signup and view all the answers

    What is the purpose of fire zones and fire separation between zones in buildings?

    <p>To prevent the spread of fire from one zone to another</p> Signup and view all the answers

    What is the primary purpose of the National Fire Code and the National Building Code in Canada?

    <p>To provide guidelines for fire prevention and safety</p> Signup and view all the answers

    Why are temperature sensors and alarms used to monitor potentially flammable materials in power plants?

    <p>To detect hot spots and smoke</p> Signup and view all the answers

    What is the recommended practice for storing gas cylinders not in use?

    <p>Outdoors in an enclosure separate from the main building</p> Signup and view all the answers

    What is the primary purpose of provincial and territorial regulations in Canada regarding fire safety?

    <p>To provide additional guidelines for fire safety</p> Signup and view all the answers

    What is the purpose of smoke and fire detectors in buildings?

    <p>To detect smoke and fire at specific locations</p> Signup and view all the answers

    Why must areas storing waste wood material be physically isolated from heat sources?

    <p>To prevent all of the above</p> Signup and view all the answers

    What is the purpose of dust suppression systems in areas storing materials like coal or grain?

    <p>To collect and filter dust from the area</p> Signup and view all the answers

    What is the primary purpose of fire safety devices such as fire hose cabinets and extinguishers in buildings?

    <p>To suppress or extinguish fires</p> Signup and view all the answers

    Why is it necessary to regularly clean cooling fins of motors?

    <p>To prevent overheating</p> Signup and view all the answers

    What is the recommended practice for handling oil and grease in the power plant?

    <p>Storing them in an enclosure equipped with fire prevention equipment</p> Signup and view all the answers

    What is the purpose of regularly monitoring plants with automatic fire detection equipment and operator rounds?

    <p>To detect fires early</p> Signup and view all the answers

    Why must sawdust and waste wood material be cleaned up regularly?

    <p>To prevent fires from conveyor belt sparks</p> Signup and view all the answers

    What is the purpose of implementing a schedule of regular inspections and cleaning?

    <p>To prevent fires and ensure a safe working environment</p> Signup and view all the answers

    What is the characteristic of spontaneous combustion?

    <p>It occurs without an apparent external ignition source</p> Signup and view all the answers

    Why is it important to remove combustible material from the areas surrounding furnace ports?

    <p>To prevent blowback from solid fuel boilers</p> Signup and view all the answers

    What is the purpose of proper insulation in boilers, steam lines, and hot process tanks?

    <p>To prevent heat from escaping and contacting combustible materials</p> Signup and view all the answers

    Why is it important to keep electric motors clean in a sawmill?

    <p>To prevent overheating and reduce the risk of fires</p> Signup and view all the answers

    What is the purpose of warning signs in areas where workers may encounter flammable materials?

    <p>To establish minimum safe distances for potential ignition sources</p> Signup and view all the answers

    Why is it important to keep equipment clear of debris or other material?

    <p>To reduce the risk of overheating and fires</p> Signup and view all the answers

    What is the purpose of grounding hoses, pails, and drip pans when transferring process materials in hazardous areas?

    <p>To prevent static electricity from building up and causing a spark</p> Signup and view all the answers

    What is the primary purpose of controlling ignition sources?

    <p>To prevent fires from occurring</p> Signup and view all the answers

    What is the purpose of installing temperature sensors, extinguishers, sprinklers, or fire insulating media in certain situations?

    <p>To reduce the risk of fires</p> Signup and view all the answers

    Why is it important to inspect chimneys, exhaust stacks, and ducting?

    <p>To reduce the risk of fires</p> Signup and view all the answers

    What is the purpose of keeping equipment that may overheat well ventilated?

    <p>To reduce the risk of overheating and fires</p> Signup and view all the answers

    Why is it important to prevent hot surfaces from contacting combustible materials?

    <p>To reduce the risk of fires</p> Signup and view all the answers

    What is the purpose of a checklist in the Field Hazard Assessment of the Safe Work Permit process for hot work?

    <p>To identify and remove possible fire conditions before starting any hot work</p> Signup and view all the answers

    What is an oxygen-enriched environment?

    <p>An environment with a percentage of oxygen in the atmosphere at or above 22 percent</p> Signup and view all the answers

    Why is it important to use caution with oxygen tanks?

    <p>Because they can create oxygen-enriched environments</p> Signup and view all the answers

    What is the purpose of monitoring areas where oxygen concentrations may increase?

    <p>To detect the buildup of oxygen-enriched areas</p> Signup and view all the answers

    What is the purpose of storing tanks containing combustible or pressurized media away from other buildings and ignition sources?

    <p>To reduce the risk of fire</p> Signup and view all the answers

    What is the purpose of assigning a Fire Watch to monitor hot work?

    <p>To monitor the work for any potential fire-creating conditions and respond if necessary</p> Signup and view all the answers

    Why is it important to use only approved equipment rated for the work when doing electrical work?

    <p>To ensure the equipment is safe to use</p> Signup and view all the answers

    What is the purpose of increasing ventilation in areas where oxygen concentrations may increase?

    <p>To prevent the buildup of oxygen-enriched areas</p> Signup and view all the answers

    What is the purpose of removing combustible material or debris away from the hot work area?

    <p>To reduce the risk of fire</p> Signup and view all the answers

    What is the purpose of having a water hose and/or fire extinguisher present during hot work?

    <p>To respond to potential fires</p> Signup and view all the answers

    What is the primary goal of a fire risk assessment in the workplace?

    <p>To evaluate the risk associated with a potential fire hazard and implement controls</p> Signup and view all the answers

    What is the main benefit of removing flammable materials from a work area?

    <p>It reduces the risk of a fire occurring</p> Signup and view all the answers

    Who should be responsible for conducting a fire risk assessment in a workplace?

    <p>A competent or qualified individual, such as a Power Engineer</p> Signup and view all the answers

    What is the purpose of storing flammable materials in self-contained areas located a safe distance away from any ignition source?

    <p>To reduce the risk of a fire occurring in the first place</p> Signup and view all the answers

    What is the first step in conducting a fire risk assessment according to the Canadian Centre for Occupational Health and Safety?

    <p>Identify fire hazards</p> Signup and view all the answers

    What is the ultimate goal of fire prevention methods?

    <p>To prevent a fire from occurring in the first place</p> Signup and view all the answers

    What is the primary purpose of identifying fire hazards in the workplace?

    <p>To develop steps to prevent fires from occurring</p> Signup and view all the answers

    Which of the following is a common method of controlling fire hazards?

    <p>Replacing flammable materials with non-flammable ones</p> Signup and view all the answers

    What is the primary purpose of prohibiting smoking in industrial settings?

    <p>To prevent fires from occurring</p> Signup and view all the answers

    What is the primary role of Power Engineers in preventing fires in the workplace?

    <p>To ensure safe storage and handling of fuels</p> Signup and view all the answers

    What is the primary purpose of regular fire hazard inspections in the workplace?

    <p>To identify potential fire hazards</p> Signup and view all the answers

    What is the primary method of preventing fires from occurring in power plants?

    <p>Implementing housekeeping practices to prevent debris buildup</p> Signup and view all the answers

    What is the primary purpose of removing barriers or protective methods in the workplace?

    <p>To reduce the risk of fires</p> Signup and view all the answers

    What is the primary benefit of having equipment in place to automatically extinguish fires?

    <p>Reducing the cost of fire damage</p> Signup and view all the answers

    What is the primary purpose of training individuals on fire prevention?

    <p>To reduce the risk of fires</p> Signup and view all the answers

    What is the primary method of preventing fires from occurring in areas where combustible materials are present?

    <p>Removing combustible materials from the area</p> Signup and view all the answers

    What is the primary purpose of removing combustible materials from the hot work area?

    <p>To eliminate potential fire hazards</p> Signup and view all the answers

    What is the effect of increased oxygen concentrations in the atmosphere?

    <p>It increases the risk of fire</p> Signup and view all the answers

    What is the purpose of assigning a Fire Watch to monitor hot work?

    <p>To monitor the work area for potential fire hazards</p> Signup and view all the answers

    What is the primary reason for using only approved electrical equipment rated for the work?

    <p>To prevent the equipment from becoming a heat or ignition source</p> Signup and view all the answers

    What is the purpose of increasing ventilation in areas where oxygen concentrations may increase?

    <p>To prevent the buildup of oxygen-enriched areas</p> Signup and view all the answers

    What is the primary purpose of inspecting electrical cords before and during use?

    <p>To ensure the cords are safe to use</p> Signup and view all the answers

    What is the result of incomplete combustion in a fire?

    <p>It produces a toxic byproduct</p> Signup and view all the answers

    What is the primary purpose of controlling sparks or other potential heat sources during hot work?

    <p>To prevent ignition of combustible materials</p> Signup and view all the answers

    What is the primary purpose of monitoring areas where oxygen concentrations may increase with sensors and alarms?

    <p>To prevent the buildup of oxygen-enriched areas</p> Signup and view all the answers

    What is the primary purpose of storing tanks containing combustible or pressurized media away from other buildings and ignition sources?

    <p>To prevent the risk of fire</p> Signup and view all the answers

    What is the primary purpose of stairwell pressurization fans in buildings?

    <p>To maintain a high pressure in the stairwell to prevent smoke from entering</p> Signup and view all the answers

    What is the function of fire safety devices such as smoke and fire detectors, sprinklers, and standpipes?

    <p>To detect fires and initiate alarm and suppression systems</p> Signup and view all the answers

    What is the purpose of the National Fire Code and the National Building Code in Canada?

    <p>To regulate fire safety standards for buildings</p> Signup and view all the answers

    What is the role of temperature sensors and alarms in power plants?

    <p>To detect hot spots and initiate fire suppression systems</p> Signup and view all the answers

    What is the purpose of fire zones and fire separation between zones in buildings?

    <p>To contain fires and prevent spread</p> Signup and view all the answers

    What is the purpose of referencing international fire codes and regulations, such as the US National Fire Prevention Association (NFPA) codes, in Canadian laws?

    <p>To provide a consistent framework for fire safety standards</p> Signup and view all the answers

    What is the purpose of keeping equipment clear of debris or other material?

    <p>To prevent overheating and potential ignition</p> Signup and view all the answers

    What is the primary purpose of installing warning signs in hazardous areas?

    <p>To establish an area as having a possible fire risk</p> Signup and view all the answers

    Why is it essential to clean chimneys and stacks?

    <p>To reduce the risk of fire</p> Signup and view all the answers

    What is the primary purpose of insulating boilers, steam lines, and hot process tanks?

    <p>To keep the heat inside the equipment and protect employees from burns</p> Signup and view all the answers

    What should be done with oil drips from leaking gaskets, packing glands, and pipe joints?

    <p>They should be caught in trays temporarily until the leak is identified and repaired</p> Signup and view all the answers

    What is the purpose of grounding hoses, pails, and drip pans when transferring combustible products?

    <p>To dissipate the static charge that may build up and cause a spark</p> Signup and view all the answers

    Why is it essential to separate combustible materials from sources of ignition?

    <p>To reduce the risk of fire</p> Signup and view all the answers

    What is the purpose of installing temperature sensors, extinguishers, sprinklers, or fire insulating media in some situations?

    <p>To reduce the risk of fire</p> Signup and view all the answers

    What is the primary purpose of identifying hazardous areas with warning signs?

    <p>To establish an area as having a possible fire risk</p> Signup and view all the answers

    What is the purpose of removing all combustible material and placing it at a safe distance from the heat source?

    <p>To reduce the risk of fire</p> Signup and view all the answers

    What is the primary purpose of physically isolating areas that store waste wood material, grains, flour, or any other material that can create dust?

    <p>To reduce the risk of heat sources igniting the material</p> Signup and view all the answers

    What is the primary reason for regularly cleaning the cooling fins of motors?

    <p>To prevent overheating and reduce the risk of friction</p> Signup and view all the answers

    What is the primary purpose of using a dust suppression system in areas that store waste wood material, grains, flour, or any other material that can create dust?

    <p>To collect and filter dust from where it may accumulate</p> Signup and view all the answers

    Why is it necessary to store gas cylinders not in use outdoors in an enclosure separate from the main building?

    <p>To reduce the risk of gas leakage into the main building</p> Signup and view all the answers

    What is the primary purpose of regularly inspecting and cleaning fuel lines and equipment oil lines?

    <p>To prevent leaks and reduce the risk of fire</p> Signup and view all the answers

    What is the primary reason for implementing a schedule of regular inspections and cleaning in the power plant?

    <p>To prevent fires and ensure a safe working environment</p> Signup and view all the answers

    What is the primary purpose of monitoring the power plant with both automatic fire detection equipment and physical rounds?

    <p>To ensure early detection and response to fires</p> Signup and view all the answers

    What is the primary reason for regularly removing combustible material from the areas surrounding furnace ports?

    <p>To prevent blowback from the solid fuel boiler from igniting the material</p> Signup and view all the answers

    What is the primary characteristic of spontaneous combustion?

    <p>It occurs when the temperature of the material is raised high enough</p> Signup and view all the answers

    What is the primary reason for storing oil and grease away from other buildings in an enclosure properly equipped with fire prevention equipment?

    <p>To prevent fires and ensure a safe working environment</p> Signup and view all the answers

    What is the primary purpose of regular cleaning in preventing Class A fires?

    <p>To remove fuel sources</p> Signup and view all the answers

    What is the benefit of hosing down areas where Class A material has accumulated?

    <p>It wets down remaining material, reducing the likelihood of ignition</p> Signup and view all the answers

    Why is it important to ensure equipment is protected from water before hosing down areas?

    <p>To prevent damage to equipment from water</p> Signup and view all the answers

    What type of plants are of particular importance to Power Engineers when it comes to Class A fires?

    <p>Pulp mills, sawmills, and coal-fired plants</p> Signup and view all the answers

    What is a key location where fuel can accumulate in a plant?

    <p>Alongside conveyors</p> Signup and view all the answers

    What is a potential consequence of hosing down an area with a black liquor recovery boiler?

    <p>A devastating explosion could occur</p> Signup and view all the answers

    What is the primary characteristic of a Class K fire that distinguishes it from a Class B fire?

    <p>The type of oil and grease used in kitchens</p> Signup and view all the answers

    What is the primary purpose of continually monitoring the temperature of the oil while the cooking station is in use?

    <p>To prevent the oil from overheating and igniting</p> Signup and view all the answers

    What is the primary responsibility of a Power Engineer in preventing fires in the workplace?

    <p>To recognize and mitigate potential fire hazards</p> Signup and view all the answers

    What is the primary benefit of removing flammable materials from a work area?

    <p>To reduce the risk of a fire occurring in the first place</p> Signup and view all the answers

    What is the primary purpose of storing oil and grease in an outside enclosure away from ignition sources?

    <p>To reduce the risk of a Class K fire</p> Signup and view all the answers

    What is the primary method of preventing fires from occurring in areas where combustible materials are present?

    <p>Removing combustible materials from the area</p> Signup and view all the answers

    What is a potential life-threatening situation in a furnace?

    <p>A hose aimed at an open port</p> Signup and view all the answers

    Why is it important to keep fuel-containing pipelines well-maintained?

    <p>To prevent leaks and fuel from coming into contact with air</p> Signup and view all the answers

    What is a common cause of spontaneous combustion in oily clothes?

    <p>Leaving them in a pile and exposed to air</p> Signup and view all the answers

    Why is welding or cutting a fuel tank that has contained fuel usually prohibited?

    <p>Because the tank can absorb fuel and explode</p> Signup and view all the answers

    What is the purpose of a berm or spill container in fuel storage tanks?

    <p>To hold the entire contents of the tank in the case of a leak</p> Signup and view all the answers

    What is the characteristic of Class C fires that differentiates them from other classes of fires?

    <p>They become Class A and Class B fires once the electrical power is turned off</p> Signup and view all the answers

    What is the primary way to prevent Class B fires from occurring?

    <p>By separating the fuel from the ignition source</p> Signup and view all the answers

    Why is it important to store oily clothes and rags in proper storage or disposal areas?

    <p>To prevent spontaneous combustion</p> Signup and view all the answers

    What is the purpose of venting fuel storage tanks to the air?

    <p>To permit changes in the tank volume as fuel is withdrawn, added, or changes in volume with temperature</p> Signup and view all the answers

    What is the primary purpose of keeping the boiler fuel oil systems near the burner free from oil?

    <p>To prevent oil from dripping down to a lower area and being susceptible to ignition</p> Signup and view all the answers

    What is a necessary condition to prevent fires from occurring in areas having electrical classifications?

    <p>Electrical equipment should be of an acceptable explosion-proof design.</p> Signup and view all the answers

    Why should electrical cords be checked regularly?

    <p>To check if they are damaged or worn out.</p> Signup and view all the answers

    What should Power Engineers do to prevent Class D fires from occurring?

    <p>Store combustible metals away from potential ignition sources.</p> Signup and view all the answers

    What is the purpose of having a lip at the bottom of the door of an electrical room?

    <p>To prevent water from leaking under the door.</p> Signup and view all the answers

    What should be done with electrical equipment in areas where there may be the presence of flammable gases or vapors?

    <p>It should be designed to be fire-safe.</p> Signup and view all the answers

    Why should operators be trained to safely operate the main breaker and electrical isolation switches?

    <p>To ensure they can safely operate electrical equipment during an emergency.</p> Signup and view all the answers

    What should be done with flammable materials near electrical equipment?

    <p>They should not be stored near electrical equipment.</p> Signup and view all the answers

    What is the purpose of ensuring that electrical equipment is approved by a recognized agency such as CSA or ULC?

    <p>To ensure it meets safety standards.</p> Signup and view all the answers

    What should be done with electrical equipment that is damaged or worn out?

    <p>It should be repaired or replaced.</p> Signup and view all the answers

    What is the purpose of protecting electrical equipment from leaking water or other fluids?

    <p>To prevent electrical shocks or fires.</p> Signup and view all the answers

    What is a key method of preventing Class A fires in plants such as pulp mills, sawmills, and coal-fired plants?

    <p>Regular cleaning and removing accumulations of Class A material</p> Signup and view all the answers

    What is the primary reason for not hosing down areas with openings into a black liquor recovery boiler?

    <p>A devastating explosion could occur if water gets into the furnace</p> Signup and view all the answers

    What is the purpose of wetting down Class A material when cleaning?

    <p>To reduce the likelihood of ignition</p> Signup and view all the answers

    Why is regular sweeping, vacuuming, mopping, hosing, and washing important in preventing Class A fires?

    <p>To remove accumulations of Class A material</p> Signup and view all the answers

    What is a common location where fuel can accumulate in a plant?

    <p>Alongside conveyors, at tripper floors, and atop bunkers</p> Signup and view all the answers

    What should be done before hosing down an area to remove Class A material?

    <p>Ensure the equipment in the area is protected from water with barriers or covers</p> Signup and view all the answers

    What is the primary reason why a Power Engineer should be trained to recognize the consequences of a blow back from a balanced draft boiler?

    <p>To handle combustible materials safely</p> Signup and view all the answers

    What is the primary purpose of restricting areas as no smoking zones in the workplace?

    <p>To prevent fires from happening by removing ignition sources</p> Signup and view all the answers

    What is the primary role of a Power Engineer in preventing fires in the workplace?

    <p>To recognize and prevent fire hazards</p> Signup and view all the answers

    What is the primary reason why a Power Engineer should pay attention to possible fire conditions when handling combustible materials?

    <p>Because they can cause large and destructive fires</p> Signup and view all the answers

    What is the primary benefit of understanding the basics of how a fire can occur?

    <p>It helps to implement methods of preventing different classes of fires</p> Signup and view all the answers

    What is the primary purpose of storing oil and grease in an outside enclosure away from ignition sources?

    <p>To prevent fires from happening by removing ignition sources</p> Signup and view all the answers

    What is the primary purpose of ensuring that electrical equipment is approved by a recognized agency?

    <p>To ensure that the equipment meets safety standards</p> Signup and view all the answers

    Why is it important to keep flammable materials away from electrical equipment?

    <p>To reduce the risk of electrical fires</p> Signup and view all the answers

    What is the purpose of regular inspections of electrical equipment?

    <p>To detect any damage or wear and tear on the equipment</p> Signup and view all the answers

    What is the primary characteristic of Class I electrical equipment?

    <p>It is designed to be explosion-proof</p> Signup and view all the answers

    Why is it important to train operators to safely operate main breakers and electrical isolation switches?

    <p>To ensure that operators can isolate electrical equipment during emergencies</p> Signup and view all the answers

    What is the primary purpose of installing covers and protection barriers over electrical equipment?

    <p>To protect the equipment from environmental hazards</p> Signup and view all the answers

    Why is it important to store combustible metals away from potential ignition sources?

    <p>To prevent Class D fires</p> Signup and view all the answers

    What is the primary characteristic of Class III electrical equipment?

    <p>It is designed to be dust-tight</p> Signup and view all the answers

    Why is it important to ensure that electrical equipment is inspected before being placed in service?

    <p>To ensure that the equipment meets safety standards</p> Signup and view all the answers

    What is the primary purpose of training operators to fight Class D fires?

    <p>To prevent Class D fires</p> Signup and view all the answers

    What is the primary purpose of venting fuel storage tanks to the air?

    <p>To allow changes in tank volume due to temperature changes</p> Signup and view all the answers

    What is the most effective way to prevent Class B fires?

    <p>Keeping the fuel away from ignition sources</p> Signup and view all the answers

    What is the risk of not storing oily clothes and rags properly?

    <p>They may spontaneously combust</p> Signup and view all the answers

    Why is it important to keep the boiler fuel oil systems near the burner free from oil?

    <p>To prevent Class B fires</p> Signup and view all the answers

    What is the primary characteristic of Class C fires that distinguishes them from other classes of fires?

    <p>They involve electrical equipment</p> Signup and view all the answers

    What is the purpose of storing fuel tanks in vented buildings at a safe distance from other buildings and areas?

    <p>To prevent fuel leaks from spreading to other areas</p> Signup and view all the answers

    What is the primary method of preventing Class B fires in areas where oil and grease are used?

    <p>Keeping the fuel away from ignition sources and air</p> Signup and view all the answers

    What is the risk of not cleaning up oil or grease spills or leaks?

    <p>They may ignite and start a Class B fire</p> Signup and view all the answers

    Why is it important to maintain fuel-containing pipelines?

    <p>To prevent leaks that can ignite</p> Signup and view all the answers

    What is the primary purpose of installing detection devices between the double walls of fuel tanks?

    <p>To detect any leaks from the inside container</p> Signup and view all the answers

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