Balmer Lawrie Maintenance Engineer Interview Questions and Answers

Q1. How will you identify if a pump is cavitating while working on a DCS panel?
Ans. 
To identify if a pump is cavitating while working on a DCS panel, you can look for certain indicators.
• Monitor the pump's suction pressure. If it is fluctuating or dropping below the specified range, it may indicate cavitation.

• Check the pump's discharge pressure. If it is higher than normal, it could be a sign of cavitation.

• Listen for unusual noises such as a rattling or grinding sound coming from the pump.

• Inspect the p...read more
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Q2. How would you prepare a hydrocarbon vessel for vessel entry?
Ans. 
To prepare a hydrocarbon vessel for vessel entry, follow these steps:
• Ensure the vessel is properly isolated from the process and all sources of energy

• Ventilate the vessel to remove any flammable or toxic gases

• Perform a thorough inspection of the vessel for any signs of leaks or damage

• Implement proper lockout/tagout procedures to prevent accidental activation of equipment

• Provide appropriate personal protective equipment...read more
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Q1. I was asked to make a presentation on laser technology.
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Knowledge of the English language, its vocabulary and comprehension. Ability to solve basic mathematical problem, which shows the capacity to use an analytical approach to everyday puzzles.

Q1. Explain for pump
Ans. 
A pump is a mechanical device used to move fluids from one place to another.
• Pumps are commonly used in various industries such as oil and gas, water treatment, and manufacturing.

• They can be classified into different types based on their principle of operation, such as centrifugal pumps and positive displacement pumps.

• Pumps can be powered by electricity, engines, or even manual operation.

• They are essential for maintaini...read more
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Q2. Explain for types of valves
Ans. 
There are four types of valves: gate valves, globe valves, ball valves, and butterfly valves.
• Gate valves are used to control the flow of fluid by raising or lowering a gate.

• Globe valves have a disc that moves up and down to control the flow of fluid.

• Ball valves use a rotating ball with a hole in it to control the flow of fluid.

• Butterfly valves have a disc that rotates to control the flow of fluid.
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Q3. Explain for screw pump
Ans. 
A screw pump is a type of positive displacement pump that uses rotating screws to move fluid.
• Screw pumps are commonly used in various industries, including oil and gas, wastewater treatment, and food processing.

• They consist of two or more intermeshing screws that rotate in opposite directions, creating a vacuum and pushing the fluid through the pump.

• Screw pumps are known for their high efficiency, low noise levels, and...read more
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Q4. Gear box working
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Q5. How to work Fire engine with high pressure
Ans. 
Working with a fire engine under high pressure requires proper training and knowledge of the equipment.
• Ensure proper training on operating the fire engine with high pressure

• Understand the different components and controls of the fire engine

• Follow safety protocols and guidelines

• Maintain and inspect the fire engine regularly

• Practice efficient water management to maximize effectiveness

• Be aware of potential hazards and tak...read more
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Q6. PPE ALL QUESTIONS
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Q7. Safety questions
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Q8. Industrial safety
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Q9. What is PPE& full fome
Ans. 
PPE stands for Personal Protective Equipment. Full form refers to the complete expansion of an acronym or abbreviation.
• PPE is equipment worn to minimize exposure to hazards that can cause injuries or illnesses.

• Examples of PPE include safety helmets, gloves, goggles, masks, and protective clothing.

• Full form refers to the complete expansion of an acronym or abbreviation, such as PPE (Personal Protective Equipment).
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Q1. Explain for pump
Ans. 
A pump is a mechanical device that moves fluids or gases by applying mechanical force.
• Pumps are used in various industries such as water treatment, oil and gas, and manufacturing.

• There are different types of pumps including centrifugal pumps, positive displacement pumps, and diaphragm pumps.

• Pumps work by creating a pressure difference to move the fluid from one place to another.

• Regular maintenance of pumps is essential...read more
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Q2. Explain for types of valves
Ans. 
There are four main types of valves: ball valves, gate valves, globe valves, and butterfly valves.
• Ball valves: used for on/off control without pressure drop, commonly used in gas and liquid applications

• Gate valves: used for on/off control with low pressure drop, commonly used in water and sewage systems

• Globe valves: used for regulating flow, commonly used in high-pressure steam systems

• Butterfly valves: used for on/off ...read more
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Q3. Explain for screw pump
Ans. 
A screw pump is a type of positive displacement pump that uses rotating screws to move fluid along the screw's axis.
• Screw pumps are known for their high efficiency and ability to handle high viscosity fluids.

• They are commonly used in industrial applications such as oil and gas, wastewater treatment, and food processing.

• Screw pumps can be classified into different types based on the number of screws, such as single scre
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Q4. Gear box working
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Q5. How to work Fire engine with high pressure
Ans. 
To work a fire engine with high pressure, ensure proper training, follow safety protocols, adjust pressure settings, and use appropriate nozzles.
• Ensure proper training on how to operate the fire engine with high pressure

• Follow safety protocols to prevent accidents and injuries

• Adjust pressure settings according to the specific situation and requirements

• Use appropriate nozzles to control the flow and direction of water

• Re...read more
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Q6. PPE ALL QUESTIONS
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Q7. Safety questions
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Q8. Industrial safety
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Q9. What is PPE& full fome
Ans. 
PPE stands for Personal Protective Equipment. It includes items like helmets, gloves, goggles, and full fome refers to the full form of PPE.
• PPE stands for Personal Protective Equipment

• It includes items like helmets, gloves, goggles, etc.

• Full fome refers to the full form of PPE, which is Personal Protective Equipment
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Q1. Why do you wanna join here.
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Q2. How does engine work
Ans. 
An engine works by converting fuel into mechanical energy through a series of combustion and mechanical processes.
• Engines typically have cylinders where fuel is ignited and combustion occurs.

• The combustion process creates high-pressure gases that push pistons, which in turn rotate the crankshaft.

• The crankshaft converts the linear motion of the pistons into rotational motion.

• This rotational motion is then transferred to...read more
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Q3. Function of flywheel
Ans. 
A flywheel is a mechanical device used to store rotational energy and provide stability to a system.
• Stores kinetic energy and releases it when needed

• Maintains rotational momentum

• Provides stability and smooth operation

• Used in various applications like engines, power plants, and energy storage systems
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Q4. Steel types and explain all
Ans. 
Steel types are classified based on their composition and properties.
• Carbon Steel: Contains primarily carbon and iron. Examples include low carbon steel, medium carbon steel, and high carbon steel.

• Alloy Steel: Contains additional elements such as manganese, nickel, chromium, or molybdenum to enhance properties. Examples include stainless steel, tool steel, and high-strength low-alloy steel.

• Stainless Steel: Contains a m...read more
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Gear box replacement work

Q1. Barring checking and replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and blumber block top cover open and old slue Barring remove and new slue...read more
Ans. 
Blumber block top cover open and old slue Barring remove and new slue Barring replace and nut tightening sure and blumber block top cover fixed and bolts nut tightening sure and paper work cancelled and conveyer belt running ok
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Q2. Motor replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and bolts nut open and old motor remove and new motor replace and bolts nut tightening s...read more
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Bolt nut open and old motor remove and new motor replace and bolt nut tightening sure and Dayal gauge eliminate process ok and paper work cancelled and conveyer belt running ok
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Q3. V-scraper replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and bolts nut open and old v-scraper remove new v-scraper replace and bolts nut tigh...read more
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Q4. Discharge Chute replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and bolts nut open and old discharge chute remove and new discharge chute repl...read more
Ans. 
Bolt nut open and old discharge chute remove and new discharge chute replace and bolts nut tightening sure and paper work cancelled and conveyer belt running ok
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Q5. Barring Greasing work and safety first and all ppes sure and paper work and all pulley checking and savings greasing sure and paper work cancelled
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Q6. Gear box replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and bolts nut open and old gear box remove and new gear box replace and bolts nut tig...read more
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