60+ Fireman Interview Questions and Answers

A down comer is a pipe that carries water from the steam drum to the water drum in a boiler.

• A down comer is a vertical pipe in a boiler system.

• It carries water from the steam drum to the water drum.

• It helps in maintaining the water level in the boiler.

• It prevents the formation of steam bubbles in the water drum.

• Examples: In a fire tube boiler, the down comer is located at the bottom of the boiler.

• In a water tube boiler, the down comer is located outside the boiler shell.

Stand 6-8 feet away from the fire when using a fire extinguisher.

• Maintain a safe distance of 6-8 feet from the fire.

• Position yourself with an escape route behind you.

• Aim the extinguisher at the base of the fire.

• Sweep the extinguisher from side to side until the fire is out.

Acetylene cylinders are kept in an upright position to prevent the acetone inside from leaking.

• Keeping acetylene cylinders upright prevents the acetone from coming into contact with the porous material inside the cylinder.

• Acetone is used as a solvent to stabilize acetylene gas, and it is stored in a porous material to prevent the gas from becoming unstable.

• If the cylinder is not kept upright, the acetone can leak out, causing the acetylene gas to become unstable and potential...read more

The hydrant system is a network of pipes and valves used to supply water to firefighters during firefighting operations.

• The hydrant system typically consists of underground water mains, hydrant valves, and fire hoses.

• Water is supplied to the system from a pressurized water source, such as a water tower or a dedicated fire pump.

• Hydrants are strategically placed throughout the area served by the fire department to ensure quick access to water.

• Firefighters connect their hoses to...read more

The types of checks for a Fire Diesel pump include visual inspection, pressure testing, and functional testing.

• Visual inspection: Check for any leaks, damage, or obstructions in the pump system.

• Pressure testing: Ensure that the pump can generate and maintain the required pressure.

• Functional testing: Test the pump's operation by starting and stopping it, checking controls, and verifying proper functioning of all components.

• Examples: Inspect fuel lines for leaks, conduct pressu...read more

There are five main types of fire extinguishers: water, foam, dry powder, CO2, and wet chemical. Each type is used for different classes of fires.

• Water extinguishers are used for Class A fires involving solid materials like wood or paper.

• Foam extinguishers are suitable for Class A and B fires, which involve flammable liquids like petrol.

• Dry powder extinguishers are versatile and can be used on Class A, B, and C fires, which involve flammable gases.

• CO2 extinguishers are used f...read more

The chlorine ppm refers to the concentration of chlorine in parts per million.

• Chlorine ppm is a measure of the amount of chlorine present in a solution or substance.

• It is commonly used in water treatment to ensure safe levels of chlorine for disinfection.

• For example, a swimming pool may have a chlorine ppm of 1-3 to maintain proper sanitation.

• In the context of firefighting, chlorine ppm may be relevant when dealing with hazardous materials or chemical fires.

Firefighters work to extinguish fires, rescue people and animals, provide emergency medical care, and educate the public on fire safety.

• Extinguishing fires using various tools and techniques

• Rescuing people and animals from dangerous situations

• Providing emergency medical care to those in need

• Educating the public on fire safety measures

• Responding to other emergencies such as car accidents or natural disasters

Hydrant flow refers to the rate at which water is discharged from a fire hydrant.

• Hydrant flow is measured in gallons per minute (GPM).

• It is an important factor in determining the effectiveness of firefighting operations.

• The flow rate can vary depending on factors such as the size of the hydrant, water pressure, and the condition of the water supply system.

• Firefighters use hydrant flow tests to assess the water supply available for firefighting.

• For example, a hydrant may have ...read more

Fire is a chemical reaction that produces heat and light, typically involving oxygen and fuel.

• Fire is a rapid oxidation process that releases heat and light.

• It requires three elements to sustain: heat, fuel, and oxygen.

• There are different classes of fire based on the type of fuel involved, such as Class A (ordinary combustibles like wood and paper) and Class B (flammable liquids like gasoline).

The rod doesn't die in the poking hole, it's used to poke and move burning material.

• The rod is made of metal and is used to stir and move burning material in a fire.

• It doesn't have a specific temperature it dies at as it's not meant to be in the fire for long periods of time.

• The poking hole is a small opening in the firebox used to add air and move material around.

• The rod is an important tool for firefighters to control and extinguish fires.

Fire fighting equipment includes pumps, various extinction methods, personal protective equipment (PPE), and fire extinguishers.

• Pumps are used to supply water or other extinguishing agents to the fire.

• Extinguishing methods can include water, foam, CO2, or dry chemical agents.

• PPE's such as helmets, gloves, and turnout gear protect firefighters from heat and smoke.

• Fire extinguishers are portable devices used to put out small fires.

The hose mail coupling parts are the components used to connect hoses together.

• Hose tail

• Coupling gasket

• Coupling nut

• Coupling body

• Coupling ring

The pressure of a fire hose is typically measured in bars, with the exact pressure depending on the specific fire hose and situation.

• The pressure of a fire hose can range from 7 to 17 bars, with higher pressures typically used for larger fires or longer distances.

• For example, a standard fire hose may have a pressure of around 10 bars, while a high-pressure hose used for industrial fires may have a pressure of 15 bars.

• The pressure of the fire hose is important for ensuring tha...read more

To control forest fires, firefighters use a combination of techniques such as creating fire lines, backfiring, and water bombing.

• Create fire lines by removing vegetation to create a gap in the fuel source

• Backfiring involves setting a controlled fire to burn the fuel in the path of the main fire

• Water bombing involves dropping water from aircraft to extinguish the fire

• Use of fire retardants to slow down or stop the spread of fire

• Deploying ground crews to extinguish hot spots an...read more

Fire is a rapid chemical reaction that releases heat and light.

• Fire is a rapid chemical reaction involving oxygen, fuel, and heat.

• It produces heat, light, and often smoke.

• Fire can be extinguished by removing one of the elements of the fire triangle - oxygen, fuel, or heat.

• Examples of electrical fires include overloaded circuits, faulty wiring, and electrical appliances catching fire.

Maintain main hydrant pump pressure by regular inspection and maintenance.

• Regularly inspect the pump and its components for any damage or wear

• Ensure proper lubrication of the pump and its moving parts

• Check and maintain the correct water level in the pump's reservoir

• Regularly test the pump's performance and adjust as necessary

• Train personnel on proper operation and maintenance of the pump

Oil and gas are fossil fuels that are extracted from the earth and used as sources of energy.

• Oil and gas are hydrocarbons, meaning they are composed of hydrogen and carbon atoms.

• Oil is a liquid fossil fuel that is formed from the remains of ancient marine organisms.

• Gas refers to natural gas, which is primarily composed of methane and is found in underground reservoirs.

• Both oil and gas are extracted through drilling wells and are used as sources of energy for various purposes,...read more

Use a fire extinguisher specifically designed for oil fires and turn off the source of heat.

• Do not use water or foam as it can spread the fire

• Use a Class K fire extinguisher designed for oil fires

• Turn off the source of heat if possible

• Evacuate the area if the fire is too large to handle

Fire is a chemical reaction that produces heat and light. Fires are classified based on the type of fuel involved.

• Fire is a rapid chemical reaction that releases heat and light

• Fires are classified into different classes based on the type of fuel involved (Class A, B, C, D, and K)

• Class A fires involve ordinary combustibles like wood and paper

• Class B fires involve flammable liquids like gasoline and oil

• Class C fires involve energized electrical equipment

• Class D fires involve co...read more

Fire is a rapid chemical reaction that releases heat, light, and various gases. It is typically accompanied by flames and can cause destruction.

• Fire is a combustion process that occurs when fuel, oxygen, and heat are present.

• It releases energy in the form of heat and light.

• Fire can spread rapidly and is often accompanied by flames.

• It can produce smoke, carbon dioxide, and other toxic gases.

• Fire can cause damage to property and pose a threat to life.

• Examples of fire include a ...read more

False alarms in firefighting can be caused by various factors.

• Malfunctioning fire alarm systems

• Accidental activation of fire alarms

• Cooking smoke or steam triggering smoke detectors

• Dust or debris interfering with smoke detectors

• Intentional false alarms or prank calls

Fire is a chemical reaction that produces heat and light. There are different types of fires based on the materials burning.

• Fire is a rapid chemical reaction between oxygen and a fuel source, producing heat and light.

• Types of fires include Class A (ordinary combustibles like wood and paper), Class B (flammable liquids like gasoline), Class C (electrical fires), and Class K (cooking oils and fats).

• Each type of fire requires a specific type of extinguisher for effective suppres...read more

Fire is a chemical reaction that produces heat and light. Fire extinguishing is the process of stopping the fire by removing one of the elements needed for combustion.

• Fire is a rapid oxidation process that releases heat and light.

• Fire requires fuel, oxygen, and heat to sustain itself.

• Fire extinguishing methods include using water, foam, carbon dioxide, or dry chemical agents to remove heat or oxygen from the fire.

• Fire extinguishers are classified based on the type of fire the...read more

The triangle of fire represents the three elements necessary for a fire to occur: heat, fuel, and oxygen.

• The three sides of the triangle represent heat, fuel, and oxygen.

• Heat is necessary to raise the temperature of the fuel to its ignition point.

• Fuel is any material that can sustain a fire, such as wood, paper, or gasoline.

• Oxygen is required to support the combustion process.

• Removing any one of these elements can help extinguish a fire.

An extinguisher is a portable device used to put out small fires by releasing chemicals or water.

• Extinguishers come in different types such as water, foam, dry chemical, CO2, and halon.

• Each type of extinguisher is designed to put out specific types of fires, such as Class A, B, C, or D.

• It is important to know how to properly use an extinguisher in case of a fire emergency.

• Extinguishers should be regularly inspected and maintained to ensure they are in working condition.

• Traini...read more

Fire is a chemical reaction that releases heat and light. Extinguishers are classified based on the type of fire they can put out.

• Fire is a rapid oxidation process that releases energy in the form of heat and light.

• Extinguishers are classified based on the type of fire they can put out, such as Class A, B, C, D, or K.

• Examples of fires include electrical fires, grease fires, and wood fires.

Fire is a rapid chemical reaction involving the release of heat, light, and various gases. It is a dangerous and destructive force.

• Fire is a combustion process that occurs when fuel, oxygen, and heat are present.

• It releases energy in the form of heat and light.

• Fire can spread rapidly and cause damage to property and endanger lives.

• Examples of fuel sources for fire include wood, paper, gasoline, and natural gas.

• Firefighters are trained to extinguish fires and protect lives and...read more

Firefighting equipment includes helmets, turnout gear, SCBA, hoses, nozzles, and fire extinguishers.

• Helmets protect the head from falling debris and heat.

• Turnout gear includes jackets and pants made of fire-resistant materials.

• SCBA (Self-Contained Breathing Apparatus) provides clean air for firefighters in smoky environments.

• Hoses are used to deliver water or foam to extinguish fires.

• Nozzles control the flow and direction of water or foam.

• Fire extinguishers are portable devic...read more

Dividing breach is used for controlling and containing fire in a specific area.

• Dividing breach is used to prevent the spread of fire to other areas.

• It helps in creating fire breaks to control the direction of the fire.

• Dividing breach can be created using fire-resistant materials such as concrete barriers or firewalls.

An electric fire should be extinguished using a Class C fire extinguisher.

• Use a Class C fire extinguisher specifically designed for electrical fires.

• Do not use water or other conductive materials as they can cause electric shock.

• Ensure the power source is turned off before attempting to extinguish the fire.

• Examples of Class C fire extinguishers include CO2 extinguishers and dry chemical extinguishers.

Foam is the media used to extinguish oil fires.

• Foam is effective in smothering the fire by cutting off the oxygen supply.

• Foam also helps to cool down the fire and prevent reignition.

• Examples of foam extinguishing agents include AFFF (Aqueous Film Forming Foam) and AR-AFFF (Alcohol-Resistant Aqueous Film Forming Foam).

Fire is a chemical reaction that releases heat and light. There are different types of fires based on the materials burning.

• Fire is a rapid chemical reaction that releases heat and light.

• Types of fires include Class A (ordinary combustibles like wood and paper), Class B (flammable liquids like gasoline), Class C (electrical fires), and Class K (cooking oils and fats).

• Fires can also be categorized as either smoldering fires (slow-burning, low heat) or flaming fires (rapid, hig...read more

Fire is a chemical reaction that releases heat, light, and various gases. It can be classified into different types based on the fuel source.

• Fire is a rapid oxidation process that occurs when fuel combines with oxygen and heat.

• It requires three elements to sustain: fuel, oxygen, and heat.

• Classifications of fire include Class A (ordinary combustibles), Class B (flammable liquids and gases), Class C (electrical fires), Class D (flammable metals), and Class K (cooking oils and f...read more

SCBA set stands for Self-Contained Breathing Apparatus set which is used by firefighters to breathe in hazardous environments.

• SCBA set is a device worn by firefighters to provide breathable air in hazardous environments

• It consists of a face mask, air cylinder, regulator, and other components

• The air cylinder contains compressed air which is delivered to the face mask through the regulator

• The face mask is designed to provide a tight seal around the face to prevent the entry of ...read more

A work permit is a legal document that allows a person to work in a specific country. Types include temporary work permits, permanent residency permits, and student work permits.

• Work permits are required for foreign nationals to work legally in a country.

• Types of work permits include temporary work permits, permanent residency permits, and student work permits.

• Examples of work permits include H-1B visas in the United States and Tier 2 visas in the United Kingdom.

The number of pumps in a pump room can vary depending on the size and capacity of the facility.

• The number of pumps in a pump room is typically determined by the size of the building or area that needs to be covered.

• Large industrial facilities may have multiple pumps in their pump rooms to ensure adequate water supply for firefighting purposes.

• Some pump rooms may have backup pumps in case of failure or maintenance of primary pumps.

• The type of pumps used in a pump room can also...read more

Fire triangle is a model that explains the three elements required for fire to occur.

• The three elements are heat, fuel, and oxygen.

• If any one of these elements is removed, the fire will be extinguished.

• For example, using a fire extinguisher removes oxygen from the fire triangle, putting out the fire.

Types of extinguishers include water, foam, CO2, dry powder, and wet chemical.

• Water extinguishers are suitable for fires involving paper, wood, and textiles.

• Foam extinguishers are effective against flammable liquids like petrol and oil.

• CO2 extinguishers are used for electrical fires and flammable liquids.

• Dry powder extinguishers can tackle a variety of fires, including flammable gases.

• Wet chemical extinguishers are designed for cooking oil and fat fires.

There are various types of portable fire extinguishers, including water, foam, dry powder, CO2, and wet chemical.

• Water extinguishers are suitable for Class A fires (wood, paper, textiles)

• Foam extinguishers are effective on Class A and B fires (flammable liquids)

• Dry powder extinguishers are versatile and can be used on Class A, B, and C fires (flammable gases)

• CO2 extinguishers are best for electrical fires (Class C)

• Wet chemical extinguishers are designed for Class F fires (coo...read more

Fire full form is Firefighter

• Fire full form is Firefighter

• Firefighter is a person who is trained to extinguish fires and rescue people in emergency situations

• Firefighters also provide medical assistance and respond to other types of emergencies such as car accidents or natural disasters

• They wear protective gear and use specialized equipment to control and extinguish fires

• Firefighters work in teams and often risk their lives to save others

There are 5 types of fire: Class A, Class B, Class C, Class D, and Class K.

• Class A fires involve ordinary combustibles such as wood, paper, and cloth.

• Class B fires involve flammable liquids and gases.

• Class C fires involve electrical equipment.

• Class D fires involve combustible metals.

• Class K fires involve cooking oils and fats.

Safety precautions for firefighters include proper gear, communication, and situational awareness.

• Wear appropriate protective gear, including helmets, gloves, and boots

• Communicate effectively with team members and follow established protocols

• Maintain situational awareness and be aware of potential hazards

• Regularly train and practice emergency response procedures

• Stay physically fit and maintain good health

• Follow proper procedures for handling and storing equipment and material...read more

Hose types used by firefighters include attack hoses, supply hoses, and booster hoses.

• Attack hoses are used to deliver water or foam to extinguish fires

• Supply hoses are used to bring water from a water source to the fire engine

• Booster hoses are smaller and used for quick deployment in small fires

Fires are classified based on the type of fuel involved, such as Class A (ordinary combustibles) or Class B (flammable liquids).

• Fires are classified into different classes based on the type of fuel involved.

• Class A fires involve ordinary combustibles like wood, paper, and cloth.

• Class B fires involve flammable liquids like gasoline, oil, and grease.

• Other classes include Class C (electrical fires), Class D (combustible metals), and Class K (cooking oils and fats).

SCBA is used by firefighters to provide breathable air in hazardous environments.

• Provides breathable air in smoke-filled environments

• Protects against toxic gases and chemicals

• Allows firefighters to work in oxygen-deficient atmospheres

• Essential for firefighting in confined spaces

There are five main types of fire extinguishers: water, foam, powder, CO2, and wet chemical.

• Water extinguishers are used for Class A fires involving solid materials like wood or paper.

• Foam extinguishers are used for Class A and B fires involving flammable liquids like petrol or diesel.

• Powder extinguishers are used for Class A, B, and C fires involving flammable gases like propane or butane.

• CO2 extinguishers are used for Class B and electrical fires.

• Wet chemical extinguishers ...read more