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Petrofac Interview Questions and Answers

Updated 23 May 2025
Popular Designations

39 Interview questions

A QA QC Engineer was asked 6mo ago
Q. Would you like to join our team?
Ans. 

I would join your team to contribute my skills in QA QC, ensuring high-quality standards and continuous improvement in processes.

  • I have a strong background in quality assurance methodologies, which will help in identifying and mitigating risks early.

  • My experience with automated testing tools like Selenium can enhance the efficiency of our testing processes.

  • I am committed to fostering a collaborative team environme...

View all QA QC Engineer interview questions
A QA QC Engineer was asked 6mo ago
Q. What are your goals for this company?
Ans. 

My goal is to contribute to the company's success by ensuring high-quality standards and continuous improvement in processes.

  • Implement robust QA processes to minimize defects, ensuring products meet specifications.

  • Collaborate with cross-functional teams to enhance communication and streamline workflows.

  • Utilize data-driven approaches to identify areas for improvement, such as reducing cycle times.

  • Stay updated with ...

View all QA QC Engineer interview questions
An Electrical Design Engineer was asked 12mo ago
Q. Why are transformers rated in kVA?
Ans. 

Transformers are rated in kVA because it indicates the maximum amount of power that can be safely handled by the transformer.

  • kVA rating is used to determine the maximum load that a transformer can handle without overheating.

  • It takes into account both the voltage and current ratings of the transformer.

  • kVA rating helps in selecting the right size of transformer for a specific application.

  • For example, a 100 kVA trans...

View all Electrical Design Engineer interview questions
An Electrical Design Engineer was asked 12mo ago
Q. What is the full form of MCCB?
Ans. 

MCCB stands for Molded Case Circuit Breaker.

  • MCCB is a type of circuit breaker that is commonly used in electrical distribution systems.

  • It provides protection against overcurrent and short circuit faults.

  • MCCBs have adjustable trip settings for different levels of current protection.

  • Examples of MCCB manufacturers include Schneider Electric, Siemens, and ABB.

View all Electrical Design Engineer interview questions
A Senior Instrument Engineer was asked
Q. Explain I&C concepts.
Ans. 

I&C concepts refer to instrumentation and control systems used in various industries to monitor and control processes.

  • I&C systems involve sensors, transmitters, controllers, and final control elements.

  • They are used to measure variables such as temperature, pressure, flow, and level.

  • Control systems use feedback loops to adjust process variables and maintain desired setpoints.

  • Examples include PLCs, DCS, SCADA system...

View all Senior Instrument Engineer interview questions
A Senior Instrument Engineer was asked
Q. What is instrumentation?
Ans. 

Instrumentation is the science and art of measurement and control of process variables within a production or manufacturing setting.

  • Instrumentation involves the use of sensors, transmitters, controllers, and final control elements to monitor and regulate process variables such as temperature, pressure, flow, and level.

  • It plays a crucial role in ensuring the efficiency, safety, and quality of industrial processes.

  • E...

View all Senior Instrument Engineer interview questions
A Piping Designer was asked
Q. What are the quality standards for deliverables?
Ans. 

Quality of deliverables is crucial for successful project completion.

  • Ensuring accuracy and completeness of drawings and documents

  • Adhering to project specifications and standards

  • Regularly reviewing and revising deliverables to meet client requirements

  • Seeking feedback from stakeholders to improve quality

  • Using software tools effectively to enhance deliverables

  • Maintaining clear communication with team members for cons...

View all Piping Designer interview questions
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A Senior Process Engineer was asked
Q. What are the pressure drop criteria for liquid and vapor phases in hydraulic calculations?
Ans. 

Pressure drop criteria for liquid and vapor phases are essential for accurate hydraulic calculations.

  • Pressure drop criteria for liquid phase typically range from 0.5-2 psi per 100 feet of pipe length.

  • Pressure drop criteria for vapor phase can vary depending on the specific application and design parameters.

  • Factors such as flow rate, pipe diameter, fluid properties, and equipment specifications must be considered w...

View all Senior Process Engineer interview questions
A Graduate Engineer was asked
Q. What are 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.

View all Graduate Engineer interview questions
A Graduate Engineer was asked
Q. What are P, PI, and PID controllers 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 sign...

View all Graduate Engineer interview questions

Petrofac Interview Experiences

43 interviews found

Trainee Interview Questions & Answers

user image Anonymous

posted on 3 Oct 2024

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. Name and work and who are you
  • Ans. 

    I am a trainee at XYZ Company, currently working on various projects under the guidance of senior team members.

    • Trainee at XYZ Company

    • Working on various projects

    • Under the guidance of senior team members

  • Answered by AI
  • Q2. What about your self and about
  • Ans. 

    I am a dedicated and hardworking individual with a passion for learning and growth.

    • I have a strong work ethic and am always eager to take on new challenges.

    • I am a quick learner and adapt well to new environments.

    • I am detail-oriented and strive for excellence in everything I do.

  • Answered by AI

Supervisor Interview Questions & Answers

user image Praveen .S

posted on 7 Nov 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.

Round 1 - HR 

(2 Questions)

  • Q1. Past experience
  • Q2. Salary expectation

Interview Questions & Answers

user image Irshad Ahmad

posted on 23 May 2025

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
  • Q1. How many valve use Hydrotesting manifolds?
  • Q2. Can you read p&id and isometric?
  • Q3. Which equipment use to Hydrotesting?
  • Q4. How to pressure calculate to design pressure?
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Properly align and format text in your resume. A recruiter will have to spend more time reading poorly aligned text, leading to high chances of rejection.
View all tips
Round 2 - Technical 

(4 Questions)

  • Q1. Painting coating insulation fireproofing related works
  • Q2. Painting work measures sqm2 Painting works following the procedure and method statement Select the paint company as per client requirements
  • Q3. As per questions required company I am given to answer
  • Q4. As per question required company I am given to answer
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Double-check your resume for any spelling mistakes. The recruiter may consider spelling mistakes as careless behavior or poor communication skills.
View all tips
Round 2 - Technical 

(5 Questions)

  • Q1. Work experience, country name, types of work, manpower handling etc
  • Q2. Punjlloyd ltd ,brouge 2 project,abudhabi
  • Q3. Allkulaib int kuwait ,subiya power plant
  • Q4. Dyam punjlloyd ,saudi arabia ,satrop projects
  • Q5. Towell eng, oman orpic (srip extension projects)
Round 3 - Aptitude Test 

Manpower nhandling only

Interview Preparation Tips

Interview preparation tips for other job seekers - try a EPC company blike perrofac
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - HR 

(2 Questions)

  • Q1. WHOULD YOU JOIN WITH OUR TEAM?
  • Ans. 

    I would join your team to contribute my skills in QA QC, ensuring high-quality standards and continuous improvement in processes.

    • I have a strong background in quality assurance methodologies, which will help in identifying and mitigating risks early.

    • My experience with automated testing tools like Selenium can enhance the efficiency of our testing processes.

    • I am committed to fostering a collaborative team environment, a...

  • Answered by AI
  • Q2. WHAT IS YOUR GOALL OF THIS COMPANY?
  • Ans. 

    My goal is to contribute to the company's success by ensuring high-quality standards and continuous improvement in processes.

    • Implement robust QA processes to minimize defects, ensuring products meet specifications.

    • Collaborate with cross-functional teams to enhance communication and streamline workflows.

    • Utilize data-driven approaches to identify areas for improvement, such as reducing cycle times.

    • Stay updated with indus...

  • Answered by AI
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Why transformer is rated in kva ?
  • Ans. 

    Transformers are rated in kVA because it indicates the maximum amount of power that can be safely handled by the transformer.

    • kVA rating is used to determine the maximum load that a transformer can handle without overheating.

    • It takes into account both the voltage and current ratings of the transformer.

    • kVA rating helps in selecting the right size of transformer for a specific application.

    • For example, a 100 kVA transforme...

  • Answered by AI
  • Q2. Full form of MCCB?
  • Ans. 

    MCCB stands for Molded Case Circuit Breaker.

    • MCCB is a type of circuit breaker that is commonly used in electrical distribution systems.

    • It provides protection against overcurrent and short circuit faults.

    • MCCBs have adjustable trip settings for different levels of current protection.

    • Examples of MCCB manufacturers include Schneider Electric, Siemens, and ABB.

  • Answered by AI
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
No response

I applied via Company Website and was interviewed in Jun 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

Graph based question. Duration: 45 mins

Round 3 - Technical 

(5 Questions)

  • 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...

  • Answered by AI
  • 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.

  • Answered by AI
  • 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...

  • Answered by AI
  • 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

  • Answered by AI
  • 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...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep your resume crisp. If you are in your final year of B.E. and want to pursue career in core, then this is the best company for you to gain experience and knowledge.
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - Technical 

(4 Questions)

  • Q1. Saudi aramco engineering standards.
  • Ans. 

    Saudi Aramco Engineering Standards are guidelines and specifications used in engineering projects for Saudi Aramco.

    • Saudi Aramco Engineering Standards cover various aspects of engineering design, materials, construction, and operation.

    • These standards ensure consistency, quality, and safety in all engineering projects undertaken by Saudi Aramco.

    • Examples of areas covered by the standards include piping design, electrical ...

  • Answered by AI
  • Q2. Design related discussions
  • Q3. Safe practices in design
  • Ans. 

    Safe practices in design involve considering potential hazards, following regulations, and prioritizing safety.

    • Identify potential hazards in the design process

    • Follow industry regulations and standards for safety

    • Prioritize safety over cost or convenience

    • Regularly review and update safety protocols

    • Include safety features in the design, such as emergency shut-off valves

    • Consider environmental impact and sustainability in d...

  • Answered by AI
  • Q4. Quality of deliverables
  • Ans. 

    Quality of deliverables is crucial for successful project completion.

    • Ensuring accuracy and completeness of drawings and documents

    • Adhering to project specifications and standards

    • Regularly reviewing and revising deliverables to meet client requirements

    • Seeking feedback from stakeholders to improve quality

    • Using software tools effectively to enhance deliverables

    • Maintaining clear communication with team members for consisten...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Familiarization with the clients standard and procedures

Skills evaluated in this interview

Interview Questions & Answers

user image Anonymous

posted on 5 Jul 2022

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
More than 8 weeks
Result
Not Selected

I appeared for an interview before Jul 2021, where I was asked the following questions.

  • Q1. How to work lock out relay
  • Q2. Electrical code

Top trending discussions

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Interview Tips & Stories
2w
toobluntforu
·
works at
Cvent
Can speak English, can’t deliver in interviews
I feel like I can't speak fluently during interviews. I do know english well and use it daily to communicate, but the moment I'm in an interview, I just get stuck. since it's not my first language, I struggle to express what I actually feel. I know the answer in my head, but I just can’t deliver it properly at that moment. Please guide me
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Petrofac Interview FAQs

How many rounds are there in Petrofac interview?
Petrofac interview process usually has 2-3 rounds. The most common rounds in the Petrofac interview process are Resume Shortlist, Technical and HR.
How to prepare for Petrofac interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Petrofac. The most common topics and skills that interviewers at Petrofac expect are PDMS, AutoCAD, EPC, Offshore and Oil.
What are the top questions asked in Petrofac interview?

Some of the top questions asked at the Petrofac interview -

  1. In reciprocating Compressor 1 st stage pressure increase .what is the reason ? ...read more
  2. What are different types of sensors used in oil and gas industri...read more
  3. What are the keys point in technical bid evaluation of special compone...read more
What are the most common questions asked in Petrofac HR round?

The most common HR questions asked in Petrofac interview are -

  1. What are your salary expectatio...read more
  2. Why should we hire y...read more
  3. Why are you looking for a chan...read more
How long is the Petrofac interview process?

The duration of Petrofac interview process can vary, but typically it takes about less than 2 weeks to complete.

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Overall Interview Experience Rating

4.4/5

based on 30 interview experiences

Difficulty level

Easy 13%
Moderate 80%
Hard 7%

Duration

Less than 2 weeks 73%
2-4 weeks 20%
More than 8 weeks 7%
View more

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Petrofac Reviews and Ratings

based on 913 reviews

4.2/5

Rating in categories

4.1

Skill development

4.1

Work-life balance

4.2

Salary

3.5

Job security

4.1

Company culture

3.8

Promotions

4.1

Work satisfaction

Explore 913 Reviews and Ratings
Accounts Payable Accountant

Chennai

2-7 Yrs

Not Disclosed

Designer Process

Mumbai

8-12 Yrs

Not Disclosed

Designer-Process

Mumbai

5-10 Yrs

Not Disclosed

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