Haldia Petrochemicals Piping Engineer Interview Questions and Answers

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. 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?
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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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My GD topic was renewable energy.

Q1. Tell me about yourself
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I am a Senior Engineer with 10+ years of experience in designing and implementing complex systems.
• 10+ years of experience in engineering

• Specialize in designing and implementing complex systems

• Strong problem-solving skills

• Experience with various programming languages such as Java, Python, and C++
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Q2. Why do you want to leave your previous company and join GAIL
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Seeking new challenges and growth opportunities at GAIL.
• Desire for new challenges and opportunities for growth

• Interested in working in a different industry or with different technologies

• Attracted to GAIL's reputation and projects

• Seeking a more collaborative and innovative work environment
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Q3. What do your parents do
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My parents are both retired now, but my father used to work as a civil engineer and my mother was a teacher.
• Father worked as a civil engineer

• Mother was a teacher

• Both are retired now
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Q4. Have you ever visited Delhi earlier
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Yes, I have visited Delhi earlier for a business trip.
• Visited Delhi for a business trip

• Explored historical sites like Red Fort and Qutub Minar

• Enjoyed local cuisine like butter chicken and chaat
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Q5. How did you reach Noida for interview
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Q6. Where are you staying in Noida for interview process
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I am staying at a hotel in Sector 18, Noida for the interview process.
• Staying at a hotel in Sector 18, Noida

• Close to the interview location

• Comfortable accommodation for the duration of the process
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Q7. Related family background
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Q1. Detailed technical questions about bearing, pump, furnace tubes (1st and 2nd pass)MOC, TLE MOC, heat exchanger tube MOC, TEMA codes and classification etc.
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Q2. Decoking process of cracking furnace, Naphtha circuit of furnace with sketches,
Ans. 
Decoking process involves removing coke deposits from cracking furnace and naphtha circuit to maintain efficiency.
• Decoking process involves burning off coke deposits using controlled combustion.

• Mechanical decoking involves using high-pressure water jets to remove coke deposits.

• Chemical decoking involves using solvents or acids to dissolve coke deposits.

• Regular decoking is essential to prevent blockages and maintain fur
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Q3. Detailed refrigeration cycles
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Refrigeration cycles are thermodynamic processes used in refrigerators and air conditioners to transfer heat from a low temperature reservoir to a high temperature reservoir.
• Refrigeration cycles typically involve four main components: compressor, condenser, expansion valve, and evaporator.

• The refrigerant undergoes a cycle of compression, condensation, expansion, and evaporation to absorb heat from the space being coole...read more
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Q4. Safety related questions which I couldn't answer well
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Q5. Safety procedures before starting of hot job
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Safety procedures before starting a hot job include obtaining a hot work permit, conducting a hazard assessment, ensuring proper ventilation, and having fire extinguishing equipment nearby.
• Obtain a hot work permit before starting any hot job

• Conduct a hazard assessment to identify potential risks

• Ensure proper ventilation in the work area to prevent buildup of flammable gases

• Have fire extinguishing equipment nearby and r
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Q6. Furnace tubes Welding related questions
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Q7. Scaffolding and insulation related general questions (easy)
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Q1. About project in depth
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Q2. What are some technical questions related to your job description?
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Question answer related piping job ,material related, manpower handling etc...

Q1. Piping related question, Piping material astm code
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Q2. Types of piping drawing
Ans. 
Types of piping drawings include Piping and Instrumentation Diagrams (P&IDs), Isometric drawings, and Orthographic drawings.
• Piping and Instrumentation Diagrams (P&IDs) show the piping system along with instruments and control devices.

• Isometric drawings show the 3D representation of the piping system.

• Orthographic drawings show the top, front, and side views of the piping system.
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Q3. Difference b/w construction and fabrication drawing?
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Construction drawings show how a structure will be built, while fabrication drawings provide detailed instructions for manufacturing individual components.
• Construction drawings focus on overall structure layout and dimensions

• Fabrication drawings provide detailed instructions for manufacturing individual components

• Construction drawings are used by contractors on site, fabrication drawings are used by manufacturers in wo...read more
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Q4. Piping material code ?
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Piping material code refers to the standards and specifications used for selecting materials for piping systems.
• Piping material codes are used to ensure the proper selection of materials based on factors like pressure, temperature, and fluid being transported.

• Common piping material codes include ASME B31.3 for process piping, ASTM for materials specifications, and API for oil and gas piping.

• These codes provide guidelin...read more
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Q5. Difference b/w pipe and tubes
Ans. 
Pipes are used to transport fluids or gases, while tubes are used for structural applications or heat transfer.
• Pipes are measured by their inside diameter, while tubes are measured by their outside diameter.

• Pipes are typically round in shape, while tubes can be round, square, or rectangular.

• Pipes are commonly used in plumbing, HVAC systems, and oil and gas industries, while tubes are used in construction, automotive, a
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Q1. Mark VIe related questions were asked
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Q2. What specific is related to the terminal board
Ans. 
Terminal board is a device used to connect multiple wires or cables in an organized manner.
• Used for connecting multiple wires or cables

• Helps in organizing the connections

• Commonly used in electrical and electronic systems
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Q3. Barcode are specific to each terminal boards
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