Qatargas Interview Questions and Answers

Q1. Working principle of Gas Turbine
Ans. 
Gas turbine works on the principle of converting energy from fuel into mechanical energy by combustion and expansion of gases.
• Gas turbine intakes air and compresses it

• Fuel is added and ignited, causing high-pressure, high-velocity gas to expand

• The expanding gas passes through turbine blades, causing them to spin and generate mechanical energy

• The mechanical energy is used to drive a generator to produce electricity or p...read more
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Q2. Desalination process overview What is Flash point , total heat and Sensible heat?
Ans. 
Flash point, total heat, and sensible heat are important parameters in the desalination process.
• Flash point is the temperature at which a particular organic compound gives off sufficient vapor to ignite in air.

• Total heat is the sum of sensible heat and latent heat in a system.

• Sensible heat is the heat that causes a change in temperature of a substance without changing its state.

• Example: In desalination, flash point is ...read more
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Q3. What is thoroughfare regeneration in water treatment system?
Ans. 
Thoroughfare regeneration in water treatment system is the process of restoring the flow capacity of pipes or channels by removing blockages and obstructions.
• Thoroughfare regeneration involves cleaning, descaling, and repairing pipelines to ensure proper water flow.

• It helps prevent clogs, leaks, and other issues that can disrupt the water treatment process.

• Examples include using high-pressure water jetting or robotic t...read more
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Q4. How to neutralize the water?
Ans. 
Water can be neutralized by adding a base to balance the pH level.
• Add a base such as baking soda or sodium hydroxide to the water

• Stir the water to ensure the base is evenly distributed

• Test the pH level using a pH strip or meter to confirm neutralization
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Q5. How to treat Sanitary water to Irrigation water?
Ans. 
Sanitary water can be treated to irrigation water by removing contaminants through filtration, disinfection, and other treatment processes.
• Use filtration methods such as sand filters, membrane filters, or activated carbon filters to remove physical and chemical contaminants.

• Implement disinfection techniques like chlorination, UV treatment, or ozonation to kill harmful microorganisms.

• Consider additional treatment proces...read more
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Q6. Power distribution system and Transformer principle?
Ans. 
Power distribution system involves the transmission of electricity from power plants to consumers through transformers.
• Power distribution system is responsible for transmitting electricity from power plants to consumers through a network of power lines.

• Transformers are used to step up or step down voltage levels for efficient transmission and distribution of electricity.

• Transformer principle is based on electromagnetic...read more
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Q7. Gas fired Steam Generator startup procedure
Ans. 
Gas fired Steam Generator startup procedure involves several steps to ensure safe and efficient operation.
• Check fuel supply and ensure it is connected properly

• Open the fuel valve and ignite the burner

• Monitor pressure and temperature levels to ensure they are within safe limits

• Gradually increase steam flow to desired levels

• Perform regular checks and maintenance to ensure continued operation
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Q8. How to issue work permit? Isolation and De-isolation procedures electrical and process systems?
Ans. 
Work permits are issued following strict procedures to ensure safety during isolation and de-isolation of electrical and process systems.
• Identify the work to be done and assess potential hazards

• Obtain necessary approvals from relevant authorities

• Isolate the electrical or process system by shutting off power or closing valves

• Lock and tag the isolation points to prevent accidental re-energization or re-start

• Complete the ...read more
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Q1. Are you comfortable with working in ras lasffan on a daily bases
Ans. 
Yes, I am comfortable working in Ras Laffan on a daily basis.
• I have experience working in industrial environments similar to Ras Laffan.

• I am familiar with the safety protocols and procedures required for working in Ras Laffan.

• I am adaptable and can handle the challenges of working in a remote location.

• I am willing to relocate if necessary for the job.
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Q2. Why did you pick your major
Ans. 
Passion for problem-solving and interest in chemistry led me to choose Chemical Engineering as my major.
• Fascination with chemistry and its applications

• Desire to solve real-world problems through science and technology

• Interest in the intersection of chemistry, physics, and engineering

• Inspiration from successful chemical engineers in the industry
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30 minutes was last one for test

Java sql question are asked to kme for this

Q1. What is safety and it’s importance
Ans. 
Safety is the practice of preventing accidents, injuries, and other potential risks in various environments.
• Safety is important to protect individuals from harm and ensure their well-being.

• It helps to create a secure environment for both employees and customers.

• Safety measures can prevent costly accidents and legal liabilities for businesses.

• Regular safety training and protocols are essential to maintain a safe workpla...read more
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