Cairn Oil Senior QA QC Engineer Interview Questions, Process, and Tips

Q1. Hydrotest test pack contains 3 main things what are they?
Ans. 
The three main things in a hydrotest test pack are pressure gauges, test pumps, and test plugs.
• Pressure gauges are used to measure the pressure during the hydrotest.

• Test pumps are used to generate the required pressure for the test.

• Test plugs are used to seal off the openings in the system being tested.
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Q2. Cement coating standards on the cross country pipeline?
Ans. 
Cement coating standards ensure the quality and durability of cross country pipelines.
• Cement coating standards specify the thickness and composition of the coating.

• Standards also define the application and curing processes for the coating.

• Coating standards ensure protection against corrosion and mechanical damage.

• Examples of cement coating standards include API RP 5L2 and ISO 21809-1.
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Q1. Working principle of elecotromagnetic flowmeter
Ans. 
Electromagnetic flowmeter measures flow rate by using Faraday's law of electromagnetic induction.
• Electromagnetic flowmeter is based on the principle of Faraday's law of electromagnetic induction.

• It consists of a flow tube, electrodes, and a magnetic field.

• When a conductive fluid flows through the flow tube, it generates a voltage proportional to the flow rate.

• The electrodes detect the voltage and the magnetic field ens...read more
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Q1. Difference between interacting and non interacting system
Ans. 
Interacting systems have feedback loops and can influence each other's behavior, while non-interacting systems operate independently.
• Interacting systems have mutual dependencies and can affect each other's inputs, outputs, or behavior.

• Non-interacting systems operate independently and do not have any influence on each other.

• Interacting systems often involve feedback loops where the output of one system affects the input...read more
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Q1. How do you store the materials
Ans. 
Materials are stored in designated areas based on type and requirements.
• Materials are stored in designated areas based on type and requirements

• Proper labeling and organization is maintained to ensure easy access and inventory control

• Temperature and humidity control may be necessary for certain materials

• Regular inspections and audits are conducted to ensure compliance with storage guidelines
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Q2. Civil infra structure. Did you worked in this Area.
Ans. 
Yes, I have extensive experience working in civil infrastructure.
• Managed QA/QC processes for various civil infrastructure projects

• Ensured compliance with industry standards and regulations

• Implemented quality control measures to improve project outcomes

• Collaborated with engineers and contractors to address quality issues

• Performed inspections and audits to verify quality of work

• Examples: oversaw construction of bridges,
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It was based on round 1,similar questions were asked, but client ask me about manufacturing process and i told to the Aramco that, i don't have experience in manufacturing, i got only experience in Construction site, but client Aramco told me your based on your site experience, we need your inputs in manufacturing

Q1. Dol and star delta wiring scheme
Ans. 
DOL (Direct-On-Line) and star delta are two different wiring schemes used in electrical engineering for starting induction motors.
• DOL wiring directly connects the motor to the power supply for starting, while star delta wiring initially starts the motor in star configuration and then switches to delta configuration for running.

• DOL wiring is simpler and cheaper but causes high starting current, while star delta wiring r...read more
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Q1. Why this company?
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Q2. How does this job fit your qualifications and skills?
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Q3. Describe the toughest challenge you have in your life.
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Q4. A piece you have prepared, talk about it.
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Q5. Mention a situation with a bad member in your group
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Q1. What type of level instrument can you use in certain applications
Ans. 
Different types of level instruments can be used in different applications depending on the requirements.
• For continuous level measurement, ultrasonic level sensors can be used.

• For point level detection, capacitance level switches can be used.

• For high-temperature applications, guided wave radar level sensors can be used.

• For corrosive or aggressive liquids, magnetic level gauges can be used.

• For level measurement in open
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Q2. Competency questions
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