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Petrofac Commissioning Field Operator Interview Questions, Process, and Tips

Updated 28 Dec 2019

Petrofac Commissioning Field Operator Interview Experiences

1 interview found

Interview Questionnaire 

5 Questions

  • Q1. What is saturated steam?
  • Ans. 

    Saturated steam is steam that is in equilibrium with liquid water at the same temperature and pressure.

    • Saturated steam is commonly used in industrial processes for heating and sterilization.

    • It is often produced by boiling water in a closed vessel, such as a boiler.

    • Saturated steam has a high heat content and can transfer heat efficiently.

    • It is important to control the quality of saturated steam to prevent damage to equi...

  • Answered by AI
  • Q2. ESDV levels?
  • Q3. Process of before experienced plant
  • Ans. 

    I have experience in commissioning and operating various types of plants.

    • I have worked with oil and gas plants, chemical plants, and power plants.

    • I am familiar with the process of pre-commissioning, commissioning, and start-up of plants.

    • I have experience in troubleshooting and resolving issues during plant operations.

    • I am knowledgeable in safety procedures and regulations in plant operations.

    • I have worked with various ...

  • Answered by AI
  • Q4. Compressor startup procedures?
  • Ans. 

    Compressor startup procedures involve several steps to ensure safe and efficient operation.

    • Check oil levels and pressure

    • Inspect for leaks and damage

    • Open suction and discharge valves

    • Start motor and monitor for abnormal vibrations or sounds

    • Gradually increase speed and monitor pressure and temperature

    • Close bypass valve once operating conditions are stable

  • Answered by AI
  • Q5. How to monitor delta D on steam line?
  • Ans. 

    Delta D on steam line can be monitored using differential pressure transmitter.

    • Install a differential pressure transmitter across the steam line.

    • Calibrate the transmitter to measure the pressure difference between two points.

    • Convert the pressure difference to delta D using the known properties of the fluid.

    • Monitor the delta D reading regularly to detect any changes in the steam line.

    • Take corrective actions if the delta

  • Answered by AI

Interview questions from similar companies

I applied via Campus Placement and was interviewed in Nov 2021. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Favorite subject will be asked from core subjects, questions from CV will be asked, any certifications or courses too.
  • Ans. I told IC Engines and thermodynamics were my favorite detailed questions were asked from those subjects and I was able to answer all the questions. They cover questions from CV too, so make sure you're confident with everything you mention in it.
  • Answered by J T

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident and answer maximum questions logically.

Interview Preparation Tips

Round: Resume Shortlist
Experience: Conventional Resume Shortlisting

Round: Group Discussion
Duration: 20 minutes

Round: Technical + HR Interview
Experience: I will try and narrate the entire interview experience here. I1 refers to the technical interviewer, I2 refers to the HR interviewer and C refers to the interviewee (me)
I2: Good evening, So you interned in Schlumberger, what happened?
C: I did not get a PPO.
I2: But they came on campus, right?
C: Ya, but I did not get shortlisted.
I1 (surprised): They did not even shortlist you?
C: Initially, they did not but today morning I got a call again.
I2: Then, what happened?
C: I do not know, haven't checked the result.
I2: You did not even bother to check the result? Shows your utter disinterest in Schlumberger..
C: No, it shows my interest in Cairn India.

At this point, I2 got silenced and urged I1 to continue..

I1: So Kartik, tell us about your work in Schlumberger?
C: Explained him all the technical details, without divulging any confidential information.
I1: Can you tell me the block name?
C: No sir, I am not allowed to do so.
Please remember , questions like these are asked just to c

College Name: IIT Kharagpur

Interview Questionnaire 

6 Questions

  • Q1. Tell me about your internships
  • Ans. 

    I have completed two internships, one in a software development company and the other in a manufacturing firm.

    • Interned as a software developer at XYZ Technologies for 6 months

    • Worked on developing a web application using ReactJS and NodeJS

    • Assisted in testing and debugging the application

    • Interned as a production engineer at ABC Manufacturing for 3 months

    • Assisted in the production process and quality control

    • Learned about ...

  • Answered by AI
  • Q2. Tell me about yourself ?
  • Ans. 

    I am a recent engineering graduate with a passion for problem-solving and innovation.

    • I graduated with a degree in Mechanical Engineering from XYZ University.

    • During my time at university, I completed several projects that involved designing and building prototypes.

    • I am proficient in CAD software such as SolidWorks and have experience with programming languages like Python.

    • I am a quick learner and enjoy working in a team...

  • Answered by AI
  • Q3. Tell me about your hobbies?
  • Ans. 

    I enjoy reading, playing sports, and exploring new places.

    • Reading books on various topics such as science fiction, biographies, and history

    • Playing basketball and badminton with friends

    • Traveling to new cities and trying local cuisine

    • Learning new languages and cultures through books and travel

  • Answered by AI
  • Q4. Tell me about 2 failures and how did you overcome them ?
  • Ans. 

    I failed to meet a project deadline and failed to secure an internship. I overcame them by learning from my mistakes and improving my skills.

    • Failed to meet a project deadline due to poor time management

    • Overcame it by creating a detailed schedule and prioritizing tasks

    • Failed to secure an internship due to lack of experience

    • Overcame it by taking online courses and gaining relevant skills

    • Learned from both failures and imp

  • Answered by AI
  • Q5. What were the other companies you are going to sit during your placements?
  • Ans. 

    I am sitting for placements in companies like ABC, XYZ, and PQR.

    • ABC

    • XYZ

    • PQR

  • Answered by AI
  • Q6. Why Oil and gas sector?
  • Ans. 

    Oil and gas sector offers challenging work, global exposure, and opportunities for growth.

    • Oil and gas sector is a dynamic and constantly evolving industry.

    • It offers a wide range of challenging work, from exploration to production and refining.

    • Working in this sector provides global exposure and opportunities to work on projects in different parts of the world.

    • The sector offers opportunities for growth and career advance...

  • Answered by AI

Interview Preparation Tips

Round: Group Discussion
Experience: There were 10 candidates in each group and I guess there were around 5 such groups, and all are from chemical engineering department. Group discussion for the GG students were held separately. Duration of the group discussion was only 5 min and so each candidate will get a chance to speak for less than 1-2 min. During the GD I made good conclusion which was also supported by the whole group which gave an added advantage to my points. GD's with my batch mates really helped me because discussing with your friends gives you broader perspective, better understanding of the topics, get to to know your weaknesses, reduce fear and stress during the GD's.The Key is ' be confident, put relevant points and try to convince the group in a smart way'. FInally only 2 students from each group got shortlisted and around 12 students were selected for the final Technical & HR Interview.
Tips: Be updated with the recent topics and better to do some group discussions with your wing mates or batch mates. This really helped me. Do not shout in the GD, put your points in smart way and make a good conclusion... :)
Duration: 5 Min minutes

Round: Technical Interview
Experience: My Interview started with ' Tell me about yourself' and then they grilled me on my internships. I did my third year Intern in Haldia Petrochemicals Ltd. Q1. What are the different types of pumps and their parts? (Centrifugal, positive displacement pumps and their parts) Q2. Different types of valves and their application? (Like gate, globe, butterfly, Non return valves (NRV)- check valves, ball valves etc.) Q3. Calculation of pressure drop through a pipe in turbulent flow (Not hagen poiseuille equation,it is for Laminar flow)
Q4. Pinch temperature Q5. Temperature profiles for cold fluid and hot fluid in cocurrent and counter current heat exchanger. Q6. Advantages of counter current heat exchanger over co current heat exchanger. (Other than LMTD, Check DQ Kern)- Ans. Hot fluid outlet temperature can go below cold fluid inlet temperature in counter current HEx which is not possible in case of co current HEx.
Q7. JT Expansion. MY 4th year internship was in U of S, canada where I developed two processes for manufacturing of glycerol carbonate and propylene glycol using Aspen hysys. They asked me regarding mass, energy balance (utilities) involved in the process and how I applied pinch analysis for the processes.


Tips: Be Confident, Be completely prepared with your projects, should be strong in your core concepts and try to answer logically.

Round: HR Interview
Experience: These are all basic standard questions
Tips: Be yourself, state real life examples and make some good stories.

General Tips: Be positive, keep smiling and make proper plan for the placements and work accordingly.
Skills: Chemical Engineering Basics
College Name: IIT Kharagpur
Motivation: I am interested to pursue my career in core chemical engineering and CAIRN is one of the best options available in oil and gas industry.

I appeared for an interview in Oct 2016.

Interview Preparation Tips

Round: Resume Shortlist
Experience: The shortlist had 26 students and it was completely on the basis of OGPA
Tips: Maintain good grades throughout

Round: Group Discussion
Experience: Initially it was a bit chaotic but everyone calmed down in a few minutes. I gave in some good points ,others also contributed in a healthy discussion and we came to a common conclusion that whenever players come on to the field they give their 100%
Tips: Try to pitch in at the right moment with good points rather than constant blabbering
Duration: 20 minutes

Round: Technical + HR Interview
Tips: Stay Calm and answer confidently. Take time to revive and frame your answer properly. Do not be in a hurry

College Name: IIT ISM Dhanbad

I applied via Campus Placement and was interviewed in Aug 2021. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Flip flop , instrument devices
  • Q2. What is flip flop , what is piezoelectric sensor
  • Ans. 

    A flip flop is a digital circuit that can store one bit of information. A piezoelectric sensor is a device that converts mechanical energy into electrical energy.

    • A flip flop is a type of sequential logic circuit that can store and remember a single bit of information.

    • It has two stable states, namely SET and RESET, which can be changed based on the input signals.

    • Flip flops are widely used in digital electronics for memo...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - best interview are friendly
Round 1 - Aptitude Test 

General aptitude questions asked. Practicing indiabix for mcq might help

Round 2 - Group Discussion 

Read mint newspaper.
Listen to analysis of different topics around the globe

Interview Preparation Tips

Interview preparation tips for other job seekers - Revise subjects HT, MT, FM.
Core questions and aptitude are asked
Round 1 - Aptitude Test 

Aon platform logical plus verbal plus quant

Round 2 - Group Discussion 

10 members in a group with relevant topics mainly current affairs

Round 3 - HR 

(2 Questions)

  • Q1. Tell us about your strength and weakness
  • Q2. They asked details about my project.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be honest and give your best communication very important.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Sep 2023. There were 4 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 

1 hr generally all topics

Round 3 - Group Discussion 

15 mins of GD consists of 8-10 members

Round 4 - Technical 

(2 Questions)

  • Q1. Area of interest asked then questions were bombarded
  • Q2. Questions about their company

Interview Preparation Tips

Interview preparation tips for other job seekers - Don't need to prepare that much but selection does not have any favourism
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Aptitude round conducted as online test

Round 2 - Technical 

(1 Question)

  • Q1. Online technical aptitude round
Round 3 - Technical 

(1 Question)

  • Q1. Concepts in area of interest

Interview Preparation Tips

Interview preparation tips for other job seekers - Should be strong in fundamentals of chemical engineering

Petrofac Interview FAQs

What are the top questions asked in Petrofac Commissioning Field Operator interview?

Some of the top questions asked at the Petrofac Commissioning Field Operator interview -

  1. How to monitor delta D on steam li...read more
  2. what is saturated ste...read more
  3. compressor startup procedur...read more

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Petrofac Commissioning Field Operator Salary
based on 4 salaries
₹8.6 L/yr - ₹12.1 L/yr
9% more than the average Commissioning Field Operator Salary in India
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based on 3 reviews

5.0/5

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4.4

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5.0

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5.0

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