Bahwan Engineering Refrigeration and Air Conditioning Mechanic Interview Questions and Answers

Q1. Steel and shuttering releted questions
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Q1. Expectation releted questions
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Q1. Related to technical question about fabrication.
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Q2. Tool related question
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Q1. What is blinding? Different types of blinds used in o&g?
Ans. 
Blinding is the process of isolating a section of a pipeline or equipment to prevent flow or contamination.
• Temporary or permanent blinds can be used depending on the situation

• Common types of blinds include spectacle blinds, paddle blinds, and bleed rings

• Blinding is often used during maintenance or repair work to ensure safety

• Blinding can also be used to prevent contamination during storage or transportation

• Blinding can...read more
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Q2. Procedures before starting a work in a refinery equipment,
Ans. 
Before starting work in a refinery equipment, certain procedures must be followed.
• Obtain a work permit

• Perform a safety check of the equipment

• Ensure proper personal protective equipment is worn

• Verify that all valves are in the correct position

• Confirm that the equipment is properly grounded

• Check for any leaks or abnormal conditions

• Communicate with other workers in the area

• Follow all established procedures and protocols
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Q3. What will you do if there's an H2S leak and there's no wind movement,
Ans. 
I will follow the emergency response plan and evacuate the area immediately.
• Activate the alarm system to alert others in the area

• Put on personal protective equipment (PPE) including a respirator

• Evacuate the area immediately and move to a safe location

• Notify emergency services and follow the emergency response plan

• Monitor the situation and wait for the all-clear signal before returning to the area
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Q4. From where you'll advice your workers to start unbloting a heat exchanger head?
Ans. 
I would advise my workers to start unbolting the heat exchanger head from the top and work their way down.
• Start from the top and work your way down

• Use appropriate tools and safety equipment

• Follow proper procedures and guidelines

• Ensure all bolts are properly labeled and accounted for

• Inspect the gasket and replace if necessary
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Q1. How to convert from A.C to D.c. Supply
Ans. 
A.C to D.C. conversion can be done using a rectifier circuit.
• A rectifier circuit can be used to convert A.C. to D.C.

• The rectifier circuit can be half-wave or full-wave.

• Half-wave rectifier only allows half of the A.C. wave to pass through, while full-wave rectifier allows the entire wave.

• The rectifier circuit can be made using diodes.

• The output of the rectifier circuit is not smooth and requires filtering using capacito...read more
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Q1. 1. Diff. Type Flow Meter Concept 2. Temperature Compensation in thermocouple 3. SPI modules 4. Level Mesurment
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Q1. Personal Questions about salary negotiation
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Q1. Power bi , Dax , sql
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Q1. Related to cad and design
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