100+ Inspection Engineer Interview Questions and Answers

The least count of a measuring instrument is the smallest value that can be measured by the instrument.

• The least count is determined by the smallest division on the scale of the instrument.

• It represents the precision or accuracy of the instrument.

• For example, a ruler with millimeter divisions has a least count of 1 mm.

• A Vernier caliper with divisions up to 0.1 mm has a least count of 0.1 mm.

• The least count is important in ensuring accurate measurements and minimizing errors.

ASME B31.3 is the code used for transportation of Hydrocarbon Fluids as per ASME Sec VIII Div.1.

• ASME B31.3 code is used for transportation of Hydrocarbon Fluids

• ASME Sec VIII Div.1 is for pressure vessels, not transportation

• Examples: ASME B31.3 code is used for pipelines carrying hydrocarbon fluids

The top cover of the MDPE pipe should be at ground level.

• The MDPE pipe should be installed in such a way that the top cover is level with the ground surface.

• This ensures that the pipe is adequately protected and prevents any damage or exposure.

• The top cover can vary depending on the specific requirements and regulations of the project.

• For example, in some cases, the top cover may need to be a minimum of 300mm, while in others it may be different.

• It is important to follow the ...read more

Diaphragm wall construction involves several steps including excavation, reinforcement placement, concrete pouring, and panel extraction.

• Excavation of a trench to the desired depth and width

• Installation of guide walls to maintain the trench dimensions

• Reinforcement cages are lowered into the trench and positioned correctly

• Concrete is poured into the trench, displacing the bentonite slurry

• Panel extraction is carried out to remove the guide walls and complete the diaphragm wall

Top bottom construction refers to building from top to bottom while bottom top construction is the opposite.

• Top bottom construction involves starting from the top and building downwards while bottom top construction starts from the bottom and builds upwards.

• Top bottom construction is commonly used in high-rise buildings while bottom top construction is used in underground structures like tunnels.

• Top bottom construction requires scaffolding and cranes while bottom top construc...read more

CGD field refers to the Corrosion and Gas Detection field in the inspection industry.

• CGD field involves inspecting and monitoring equipment and systems for corrosion and gas leaks.

• Inspection engineers in the CGD field use various techniques such as visual inspections, non-destructive testing, and gas detection equipment.

• They ensure compliance with safety regulations and standards to prevent accidents and equipment failures.

• Examples of equipment inspected in the CGD field incl...read more

Various tests are performed on cables, transformers, and motors to ensure their proper functioning.

• Cables are tested for insulation resistance, continuity, and high voltage.

• Transformers are tested for turns ratio, insulation resistance, and winding resistance.

• Motors are tested for insulation resistance, winding resistance, and no-load and load current.

• Other tests may include temperature rise, partial discharge, and impulse voltage tests.

• Testing is important to ensure safety a...read more

There are several types of MDPE pipes used in various applications.

• MDPE stands for Medium Density Polyethylene.

• MDPE pipes are commonly used for gas and water distribution.

• Types of MDPE pipes include PE80 and PE100, which refer to the density and strength of the material.

• MDPE pipes are available in different sizes and pressure ratings.

• Examples of MDPE pipe applications include underground gas pipelines, water supply networks, and irrigation systems.

Steps for pressure vessels inspection during maintenance include visual inspection, thickness measurement, non-destructive testing, and documentation.

• Perform visual inspection of the pressure vessel for any signs of damage or corrosion.

• Measure the thickness of the vessel walls using ultrasonic testing or other methods.

• Conduct non-destructive testing such as radiography or magnetic particle testing to detect any defects.

• Document all inspection findings and create a maintenance...read more

The depth required for IGL gas laying depends on various factors such as soil type, traffic load, and depth of other utilities.

• The depth should be sufficient to prevent damage from external factors such as traffic load and soil type.

• The depth should also be deep enough to avoid interference with other utilities.

• The depth requirement may vary depending on the location and local regulations.

• For example, in Delhi, the minimum depth requirement for IGL gas laying is 1.2 meters.

• Th...read more

Answering questions related to Material Grouping, P numbers, Code and Standards of Power Boiler Piping and Pressure Vessel's with ASME 31.1, ASME IX, and IBR 1950 Standard of Indian Boiler Manufacturing.

• Material Grouping is the classification of materials based on their chemical composition and mechanical properties.

• P numbers are assigned to each group of materials to indicate their weldability and compatibility with other materials.

• ASME 31.1 is the code for Power Piping and ...read more

Calibration is the process of comparing a measurement device to a known standard to ensure accuracy. GD&T is a symbolic language used to communicate design intent on engineering drawings.

• Calibration ensures that measurement devices are accurate and reliable.

• GD&T symbols are used to specify the geometric requirements of a part on an engineering drawing.

• Examples of inspection instruments used earlier include vernier calipers, micrometers, bore gauges, and coordinate measuring m...read more

A power flow schematic diagram for a tractor.

• Start with the engine as the power source

• Show the power flow to the transmission

• Include the power flow to the wheels

• Illustrate any additional components such as hydraulic systems or electrical systems

The hydrotest pressure of a vessel with MAWP=1MPa is typically 1.5 times the MAWP.

• Hydrotest pressure is usually 1.5 times the MAWP (Maximum Allowable Working Pressure)

• For MAWP=1MPa, the hydrotest pressure would be 1.5 MPa

• Hydrotest pressure ensures the vessel's structural integrity under pressure

Stainless steel is a corrosion-resistant alloy with high strength and durability, commonly used in various industries.

• Stainless steel is a type of steel alloy containing a minimum of 10.5% chromium, which creates a passive oxide layer that prevents corrosion.

• It has high strength, excellent durability, and resistance to corrosion, making it ideal for applications in harsh environments.

• Stainless steel is commonly used in the construction industry for structural components, in t...read more

The documents required for the inspection of material and work include specifications, drawings, test plans, inspection reports, and certificates.

• Specifications: Provide detailed information about the required standards and quality of the material and work.

• Drawings: Illustrate the design and dimensions of the material and work to be inspected.

• Test plans: Outline the procedures and criteria for conducting tests on the material and work.

• Inspection reports: Document the findings...read more

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

W, H, R, P, and V represent different variables or parameters.

• W could represent weight or width

• H could represent height

• R could represent radius

• P could represent pressure

• V could represent volume

There are several types of PE used in different industries.

• Polyethylene (PE) is a thermoplastic polymer.

• Common types of PE include HDPE, LDPE, and LLDPE.

• HDPE (High-Density Polyethylene) is used for bottles, pipes, and containers.

• LDPE (Low-Density Polyethylene) is used for packaging films and coatings.

• LLDPE (Linear Low-Density Polyethylene) is used for flexible packaging and liners.

• Other types of PE include MDPE (Medium-Density Polyethylene) and UHMWPE (Ultra-High Molecular We...read more

Pipe is measured by its inner diameter, while tube is measured by its outer diameter.

• Pipe is used to transport fluids or gases, while tube is often used for structural applications.

• Pipe is typically manufactured to specific industry standards, while tube may have more varied dimensions and tolerances.

• Examples: PVC pipe for plumbing, steel tube for construction.

PNGRB stands for Petroleum and Natural Gas Regulatory Board.

• PNGRB is a regulatory body established under the Petroleum and Natural Gas Regulatory Board Act, 2006.

• It is responsible for regulating the refining, processing, storage, transportation, distribution, marketing, and sale of petroleum, petroleum products, and natural gas.

• PNGRB grants licenses for the establishment and operation of petroleum and natural gas infrastructure.

• It also monitors and enforces compliance with re...read more

Identifying a back compressor involves understanding its function, components, and operational indicators.

• Check for unusual vibrations or noises during operation, which may indicate compressor issues.

• Inspect the compressor's pressure readings; abnormal levels can signal malfunction.

• Look for signs of oil leaks around the compressor, which can indicate wear or damage.

• Monitor the temperature of the compressor; overheating can suggest problems with cooling or lubrication.

• Review m...read more

The gap required in fit-up of pipes depends on the welding process and material being used.

• The gap for TIG welding is typically 1/16 to 1/8 inch.

• For MIG welding, the gap can be slightly larger, around 3/32 to 1/8 inch.

• The gap should be uniform along the entire length of the joint for proper welding.

• The material being welded also influences the gap size, with thicker materials requiring larger gaps.

Yes, I am knowledgeable in MS Word, Excel, and Vision.

• Proficient in creating and editing documents in MS Word

• Skilled in creating spreadsheets and analyzing data in MS Excel

• Familiar with using Vision for inspection and quality control purposes

Fittings used during charging depend on the type of refrigerant and system design.

• The type of refrigerant and system design determine the fittings used during charging.

• Common fittings include flare, sweat, and quick-connect fittings.

• Flare fittings are commonly used in air conditioning systems.

• Sweat fittings are commonly used in refrigeration systems.

• Quick-connect fittings are commonly used in automotive air conditioning systems.

• Proper fittings must be used to prevent leaks an...read more

Inspection Engineer plays a crucial role in ensuring safety and reliability of CGD infrastructure.

• Conducting regular inspections of pipelines, valves, and other equipment to identify potential hazards or defects

• Developing and implementing inspection plans and procedures

• Collaborating with other departments to ensure compliance with safety regulations and standards

• Analyzing inspection data to identify trends and areas for improvement

• Providing recommendations for maintenance and...read more

X-ray film is commonly used for radiography testing.

• X-ray film is sensitive to X-ray radiation and produces an image when exposed.

• The film is placed behind the object being tested and exposed to X-rays.

• After exposure, the film is developed to reveal any defects or abnormalities.

• Common types of X-ray film include industrial radiographic film and medical radiographic film.