Linde India Operations Engineer Interview Questions and Answers

Q1. Types of relief devices
Ans. 
Relief devices are safety devices used to protect equipment and personnel from overpressure situations.
• Types include pressure relief valves, rupture discs, and safety valves

• Pressure relief valves are the most common type and operate by opening to release excess pressure

• Rupture discs are non-reclosing devices that burst at a predetermined pressure to relieve pressure

• Safety valves are similar to pressure relief valves bu...read more
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Q2. Types of relief devices are Conventional, Balance bellow & Pilot operated.
Ans. 
Relief devices such as Conventional, Balance bellow, and Pilot operated are used in process engineering to protect equipment from overpressure.
• Conventional relief devices are simple and rely on a spring-loaded mechanism to relieve pressure.

• Balance bellow relief devices use a bellows to balance the pressure on both sides of the valve, allowing for accurate pressure relief.

• Pilot operated relief devices use a pilot valve ...read more
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Q1. How is flow affected with change in velocity in a venturimeter.
Ans. 
Velocity change affects flow in a venturimeter.
• As velocity increases, pressure decreases and vice versa.

• Flow rate is directly proportional to the square root of pressure difference.

• Venturimeter is used to measure flow rate in pipes.

• Flow rate can be calculated using Bernoulli's equation.
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Q2. Which is better cstr/pfr for zero order reaction.
Ans. 
PFR is better for zero order reaction as it maintains constant concentration throughout the reactor.
• PFR maintains constant concentration throughout the reactor

• CSTR may result in concentration gradients

• PFR is more efficient for zero order reactions

• CSTR may be more suitable for reactions with changing rate constants
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Q1. For Oil &gas knowledge fo API 1104 ,B 31.8 , 31.8 ASME SEC IX AND NDT ASME SEC VI AND PROJECT PROCEDURE EXPERIENCE FOR GAS PIPELINE
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Q2. What is difference between psl 2 and psl 1 Which pipe used for gas pipeline
Ans. 
PSL 2 has stricter requirements than PSL 1. Gas pipelines use PSL 2 pipes.
• PSL 2 has higher minimum yield strength and stricter chemical composition requirements than PSL 1

• PSL 2 also has non-destructive inspection requirements

• Gas pipelines use PSL 2 pipes due to their higher strength and durability

• PSL 1 pipes are typically used for low-pressure applications
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Q1. Resume Related questions
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Q1. Depending upon ur experience
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Q2. Work related questions
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Q3. Principal of UT
Ans. 
UT stands for Ultrasonic Testing, a non-destructive testing method used in engineering.
• UT uses high frequency sound waves to detect flaws or defects in materials.

• It is commonly used in industries like aerospace, automotive, and manufacturing.

• UT can be used to inspect welds, pipelines, and structural components.

• The results of UT are displayed in a visual representation called a C-scan or B-scan.
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Q1. Question related to resume
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Past project learning

Q1. Past project specs of piping
Ans. 
Managed multiple projects involving piping systems for industrial facilities.
• Designed and implemented piping systems for new construction projects

• Oversaw maintenance and repairs of existing piping systems

• Coordinated with engineers, contractors, and vendors to ensure project specifications were met
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Q2. Lessons learnt of past project
Ans. 
Lessons learnt from past projects include the importance of clear communication, thorough planning, and proactive problem-solving.
• Clear communication is essential to ensure all team members are on the same page.

• Thorough planning helps to anticipate potential challenges and develop effective strategies.

• Proactive problem-solving allows for quick resolution of issues before they escalate.

• Regular project reviews help to id...read more
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