Indian Oil Corporation Inspection Engineer Interview Questions, Process, and Tips

Heat exchangers can be inspected using various methods such as visual inspection, non-destructive testing, and cleaning.

• Visual inspection of the heat exchanger tubes and fins for any signs of corrosion, erosion, or damage.

• Non-destructive testing methods such as ultrasonic testing, radiography, and eddy current testing can be used to detect any defects or cracks in the heat exchanger.

• Cleaning the heat exchanger regularl...read more

Pipe fit up should be checked for proper alignment, gap, and cleanliness.

• Check for proper alignment of pipes

• Ensure there is no gap between the pipes

• Inspect for cleanliness of the pipes

• Verify that the pipes are properly supported

• Check for any defects or damages in the pipes

In weld visual inspection, we will see the quality of the weld and any defects present.

• Quality of the weld

• Presence of any defects

• Cracks, porosity, lack of fusion, undercutting, etc.

• Weld reinforcement and penetration

• Alignment and dimensions of the weld

• Surface finish and cleanliness

Visual test involves using the naked eye to inspect a surface or material for defects or irregularities.

• Ensure proper lighting and angle for optimal visibility

• Look for cracks, corrosion, discoloration, or other abnormalities

• Compare with reference standards or previous inspections

• Use magnifying glasses or borescopes for closer examination

• Document findings and report any issues

There are several types of heat exchangers used in various industries.

• Shell and tube heat exchanger

• Plate heat exchanger

• Double pipe heat exchanger

• Spiral heat exchanger

• Air cooled heat exchanger

• Finned tube heat exchanger