SGS Senior Inspection Engineer Interview Questions and Answers

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.

IQI stands for Image Quality Indicator, used in radiography testing to ensure the quality of the radiographic image.

• IQI is a tool used to determine the quality of radiographic images by measuring the image quality parameters such as contrast, resolution, and sensitivity.

• It consists of a series of patterns or objects with specific details that are placed on the radiographic film along with the test object.

• The IQI is the...read more

The instrument used for surface preparation is a sandblaster.

• Sandblaster is commonly used for surface preparation in industries like construction, automotive, and shipbuilding.

• It uses compressed air to propel abrasive material at high velocity to smooth out rough surfaces or remove contaminants.

• Examples of abrasive materials used in sandblasters include sand, garnet, and glass beads.

Types of welding include arc welding, gas welding, resistance welding, and laser welding.

• Arc welding: uses an electric arc to melt and join metals, such as MIG welding and TIG welding

• Gas welding: uses a gas flame to melt and join metals, such as oxyacetylene welding

• Resistance welding: uses electric resistance to generate heat and join metals, such as spot welding

• Laser welding: uses a high-powered laser beam to melt and

Ultrasonic Testing (UT) is used to measure sub surface defects below 12mm.

• Ultrasonic Testing (UT) is a non-destructive testing method that uses high frequency sound waves to detect internal flaws in materials.

• UT is commonly used in industries such as aerospace, automotive, and manufacturing to inspect for defects like cracks, voids, and inclusions.

• The technique is effective for detecting sub surface defects as it can p...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.

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.

Five important IS codes related to inspection engineering

• IS 456: Code of practice for plain and reinforced concrete

• IS 3370: Code of practice for concrete structures for storage of liquids

• IS 800: Code of practice for general construction in steel

• IS 1893: Criteria for earthquake resistant design of structures

• IS 875: Code of practice for design loads for buildings and structures

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

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

It is important to discuss current and expected salary during the interview process.

• Be honest and transparent about your current salary.

• Research the market rates for the position and industry to determine a reasonable expected salary.

• Consider factors such as your experience, qualifications, and the responsibilities of the role when discussing expected salary.

• Highlight any additional skills or certifications that may ju...read more

I am changing jobs for better career growth and opportunities.

• Seeking new challenges and opportunities to expand my skills and knowledge.

• Looking for a company that aligns with my values and offers a better work-life balance.

• Wanting to work in a more dynamic and innovative environment.

• Desire to take on more responsibilities and contribute to larger projects.

• Seeking better career growth and advancement opportunities.

• Want...read more

Valves are devices used to control the flow of fluids or gases in a system.

• Gate valve: used to start or stop the flow of fluid by lifting or lowering a gate

• Ball valve: uses a rotating ball with a hole to control the flow

• Check valve: allows flow in one direction and prevents backflow

• Globe valve: controls flow by raising or lowering a disc against the flow

• Butterfly valve: uses a disc to control flow by rotating it

QAP, WPS, and DFT are important documents used in inspection engineering.

• QAP stands for Quality Assurance Plan, which outlines the procedures and requirements for ensuring quality in a project or process.

• WPS stands for Welding Procedure Specification, which provides detailed instructions for performing welding operations.

• DFT stands for Dry Film Thickness, which refers to the thickness of a coating or paint applied to a...read more

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

Data required for fire & safety

• Building layout and floor plans

• Location of fire exits and emergency equipment

• Fire suppression systems and equipment

• Fire alarm and detection systems

• Emergency response plan and procedures

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 conditionin...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 min...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 imp...read more

I am seeking new challenges and growth opportunities in my career.

• Seeking new challenges and growth opportunities

• Want to expand my skillset and knowledge

• Looking for a more supportive and collaborative work environment

• Interested in working with advanced technologies and equipment

• Want to contribute to a company with a strong safety culture