Petrofac Graduate Engineer Interview Questions, Process, and Tips

Graph based question. Duration: 45 mins

Q1. What are different types of sensors used in oil and gas industries?
Ans. 
Various sensors used in oil and gas industries include pressure sensors, temperature sensors, flow sensors, level sensors, and gas detectors.
• Pressure sensors - used to measure pressure in pipelines and equipment.

• Temperature sensors - monitor temperature levels in various processes.

• Flow sensors - measure the flow rate of liquids or gases in pipelines.

• Level sensors - detect the level of liquids in tanks or vessels.

• Gas de...read more
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Q2. What is HAZOP and HAZID?
Ans. 
HAZOP stands for Hazard and Operability Study, while HAZID stands for Hazard Identification.
• HAZOP is a systematic method to identify potential hazards and operability issues in a process plant.

• HAZID is a process used to identify hazards in a facility or operation before they become accidents.

• Both HAZOP and HAZID are important tools in risk assessment and management in engineering projects.
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Q3. What are P, PI,PID in process control?
Ans. 
P, PI, PID are types of controllers used in process control to regulate the output based on the input.
• P stands for Proportional controller, which adjusts the output based on the error signal.

• PI stands for Proportional-Integral controller, which not only adjusts based on error signal but also integrates the error over time.

• PID stands for Proportional-Integral-Derivative controller, which adjusts based on error signal, i...read more
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Q4. What do you know about Digital Electronics?
Ans. 
Digital Electronics is a branch of electronics that deals with digital signals and systems.
• Deals with digital signals (0s and 1s)

• Involves logic gates, flip-flops, and digital circuits

• Used in computers, calculators, digital watches, etc.

• Binary arithmetic and Boolean algebra are fundamental concepts
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Q5. What are level sensor, flow sensor, temperature sensor?
Ans. 
Level sensor, flow sensor, and temperature sensor are devices used to measure different physical parameters in various industries.
• Level sensor measures the level of a substance in a container or tank, such as liquid level sensors in water tanks.

• Flow sensor measures the flow rate of a fluid, like a flow meter in a pipeline.

• Temperature sensor measures the temperature of a system or environment, for example, a thermocoupl
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