100+ Inspection Engineer Interview Questions and Answers

T4S is a regulatory body governed by PNGRB.

• T4S stands for Transmission System Service Provider

• It is responsible for regulating the transmission of natural gas in a country

• PNGRB stands for Petroleum and Natural Gas Regulatory Board

• PNGRB is the governing body that regulates the activities of T4S

• T4S ensures fair and efficient transmission of natural gas

• It sets tariffs, monitors compliance, and resolves disputes in the transmission sector

The pitch value of a drill hole can be measured using a pitch gauge or by calculating the distance between consecutive threads.

• Use a pitch gauge to directly measure the pitch value of the drill hole.

• If a pitch gauge is not available, measure the distance between consecutive threads and calculate the pitch value using the formula: pitch = distance / number of threads.

• Ensure accurate measurements by using precision tools and techniques.

• Example: If the distance between two conse...read more

To work in IGL, one must have knowledge of inspection techniques and equipment used in the oil and gas industry.

• Understand the inspection requirements and standards set by IGL

• Use appropriate inspection techniques and equipment

• Ensure compliance with safety regulations

• Maintain accurate records of inspections and findings

• Communicate effectively with team members and clients

• Continuously improve knowledge and skills through training and development

• Examples of equipment used in IGL...read more

P number is a designation for materials used in welding. It is used to identify the material composition of a weld.

• P number is a code assigned to a specific material type based on its chemical composition, mechanical properties, and other characteristics.

• It is used in welding to identify the material being welded and to ensure that the welding procedure is appropriate for that material.

• P numbers are used in welding codes and standards such as ASME Section IX and AWS D1.1.

• For ...read more

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 join metals

There are mainly three types of tires: Bias ply, Radial ply, and Tubeless.

• Bias ply tires have a diagonal pattern and are cheaper than radial tires.

• Radial ply tires have a radial pattern and provide better handling and fuel efficiency.

• Tubeless tires do not require an inner tube and are puncture-resistant.

• Other types of tires include run-flat tires, all-terrain tires, and winter tires.

Checklist for inspection can be made by identifying key inspection points, setting inspection frequency, including relevant regulations and standards, and ensuring clear documentation.

• Identify key inspection points based on equipment or process being inspected

• Set inspection frequency based on criticality and risk factors

• Include relevant regulations, standards, and best practices in the checklist

• Ensure clear documentation of inspection findings, actions taken, and follow-up re...read more

T4S is a standard and specification used in the field of inspection engineering.

• T4S stands for Technical Specification for Structural Steelwork

• It provides guidelines and requirements for the inspection and testing of structural steelwork

• T4S covers various aspects such as material properties, fabrication, welding, and non-destructive testing

• It ensures the quality and safety of structural steelwork in construction projects

• For example, T4S may specify the acceptable levels of we...read more

The testing standard for ball valves is API 598.

• API 598 is the widely accepted testing standard for ball valves.

• It includes tests for seat leakage, shell leakage, closure tightness, and pressure testing.

• API 598 also specifies acceptance criteria for each test.

• Other standards like API 6D and ASME B16.34 may also be applicable depending on the valve type and application.

2 stroke engines have power strokes in every revolution while 4 stroke engines have power strokes in every other revolution.

• 2 stroke engines have simpler design and are lighter than 4 stroke engines.

• 2 stroke engines have higher power-to-weight ratio than 4 stroke engines.

• 4 stroke engines are more fuel efficient and have lower emissions than 2 stroke engines.

• Examples of 2 stroke engines are chainsaws, dirt bikes, and jet skis while examples of 4 stroke engines are cars, trucks...read more

ISO code for CNG is ISO 15403. Safety measures for CNG include proper storage, handling, and maintenance procedures.

• ISO 15403 is the international standard for compressed natural gas (CNG) fueling stations and vehicles.

• Safety measures for CNG include ensuring proper storage tanks and pipelines, regular inspections, and adherence to safety regulations.

• Proper handling procedures, such as using appropriate equipment and following safety protocols, are crucial to prevent accident...read more

Under pressure shutoff is a safety mechanism that shuts off the flow of fluid or gas when pressure exceeds a certain limit.

• Under pressure shutoff is commonly used in pipelines, valves, and other equipment that handle fluids or gases.

• It helps prevent accidents and damage to equipment by stopping the flow of fluid or gas when pressure becomes too high.

• Examples of under pressure shutoff devices include pressure relief valves, rupture discs, and emergency shutdown systems.

• These d...read more

PSSR stands for Pre-Startup Safety Review. It is a systematic review of safety aspects before starting up a new or modified process.

• Ensures that all safety systems are in place and functioning properly before starting operations

• Identifies potential hazards and risks that may arise during startup

• Helps in preventing accidents and ensuring the safety of personnel and equipment

• Commonly used in industries such as oil and gas, chemical, and manufacturing

• Examples include checking em...read more

1 inch is equal to 25.4 millimeters.

• 1 inch is equivalent to 25.4 millimeters.

• To convert inches to millimeters, multiply the inch value by 25.4.

• For example, 2 inches is equal to 50.8 millimeters.

Interpass in welding refers to the time between welding passes when the metal is allowed to cool down before the next pass is made.

• Interpass is the time between successive welding passes.

• It allows the metal to cool down to prevent overheating and potential defects.

• Proper interpass temperature control is crucial for weld quality.

• Interpass temperature is typically specified in welding procedures.

• Failure to adhere to interpass temperature requirements can lead to weld defects.

• Ex...read more

QMS principles are the foundation of a quality management system that ensures customer satisfaction and continuous improvement.

• Customer focus

• Leadership

• Engagement of people

• Process approach

• Improvement

• Evidence-based decision making

• Relationship management

Back compression can cause smoke to be emitted from machinery.

• Back compression occurs when the pressure in the combustion chamber of an engine is higher than the pressure in the intake manifold.

• This can cause smoke to be emitted from the engine due to incomplete combustion.

• Back compression can be caused by a variety of factors, including worn piston rings, leaky valves, or a malfunctioning turbocharger.

• It is important for inspection engineers to identify the cause of back com...read more

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

Reading engineering drawings involves understanding symbols, dimensions, and views to interpret the design accurately.

• Understand the different types of lines and symbols used in the drawing

• Pay attention to dimensions, tolerances, and annotations

• Interpret different views such as top view, side view, and isometric view

• Refer to the title block for important information like scale and part number

Concrete cube mould tolerance refers to the acceptable range of dimensions for the mould used to cast concrete cubes for testing.

• Concrete cube mould tolerance is typically around +/- 1mm for most standard moulds.

• Tolerance may vary depending on the specific standards or specifications being followed.

• It is important to ensure that the mould used meets the required tolerance to ensure accurate test results.

• Examples of concrete cube mould tolerances: 150mm x 150mm x 150mm cube mo...read more

The maximum concrete pouring height depends on various factors such as the type of concrete, formwork design, and weather conditions.

• Maximum concrete pouring height for normal concrete is typically around 1.5 to 2 meters.

• For high-performance concrete, the maximum pouring height may be reduced to around 1 meter.

• Factors such as formwork stability, concrete mix design, and weather conditions can affect the maximum pouring height.

• Using a pump or tremie method can allow for pourin...read more

I am currently earning $70,000 per year.

• My current salary is $70,000 per year.

• I am satisfied with my current salary.

• I have been receiving annual increments in my salary.

• I believe my salary is competitive in the industry.

Mechanical properties refer to the behavior of materials under applied forces, including strength, hardness, elasticity, and toughness.

• Mechanical properties include strength, hardness, elasticity, toughness, ductility, and brittleness.

• Strength is the ability of a material to withstand an applied force without failure.

• Hardness is the resistance of a material to deformation, scratching, or abrasion.

• Elasticity is the ability of a material to return to its original shape after de...read more

A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure.

• Pressure vessels are used in various industries such as oil and gas, chemical, pharmaceutical, and food processing.

• They are designed to withstand high pressures and are typically cylindrical or spherical in shape.

• Examples include boilers, storage tanks, and heat exchangers.

The 5 measuring instruments are Vernier caliper, Micrometer, Height gauge, Depth gauge, and Dial indicator.

• Vernier caliper is used to measure dimensions with high precision.

• Micrometer is used for measuring small distances accurately.

• Height gauge is used to measure vertical distances.

• Depth gauge is used to measure depths of holes or slots.

• Dial indicator is used to measure small distances and angles.

Engine knocking is a metallic sound that occurs when the fuel in the combustion chamber ignites at the wrong time.

• Occurs when fuel ignites at the wrong time in the combustion chamber

• Caused by improper fuel combustion or incorrect ignition timing

• Can lead to engine damage if not addressed

• Common in older or poorly maintained engines

PNGRB stands for Petroleum and Natural Gas Regulatory Board.

• PNGRB is a regulatory body in India that regulates the refining, processing, storage, transportation, distribution, marketing, and sale of petroleum, petroleum products, and natural gas.

• It was established under the Petroleum and Natural Gas Regulatory Board Act, 2006.

• PNGRB issues guidelines and regulations to ensure fair practices, competition, and safety in the petroleum and natural gas sector.

• The guidelines cover v...read more

A service regulator is a device used to regulate the pressure of gas or liquid in a pipeline or system.

• It is typically installed at the point of entry to a building or facility

• It ensures that the pressure of the gas or liquid is at a safe and consistent level

• It can be adjusted to accommodate changes in demand or supply

• Examples include natural gas service regulators and water service regulators

QAP stands for Quality Assurance Plan in manufacturing, outlining procedures and standards to ensure product quality.

• QAP is a document that details the quality control procedures, standards, and specifications for a particular product or project.

• It includes information on inspection methods, acceptance criteria, testing procedures, and corrective actions.

• QAP helps ensure that products meet the required quality standards and specifications.

• Examples of QAP elements include mate...read more

The 7 QC tools are basic statistical tools used for quality control in manufacturing and other industries.

• Check sheets: Used to collect and organize data

• Pareto charts: Used to identify the most frequent problems or defects

• Histograms: Used to show the distribution of data

• Cause-and-effect diagrams: Used to identify the root cause of a problem

• Control charts: Used to monitor a process over time

• Scatter diagrams: Used to show the relationship between two variables

• Flowcharts: Used t...read more

RBI stands for Risk-Based Inspection, a method used to optimize inspection schedules based on risk levels.

• RBI is a methodology used to determine the most effective inspection plan based on the risk associated with each piece of equipment or component.

• It involves assessing the likelihood of failure and the consequences of failure to prioritize inspection efforts.

• RBI helps in optimizing inspection intervals, reducing downtime, and ensuring safety and reliability.

• Examples of RBI...read more

A carburettor is a device that mixes air and fuel for internal combustion engines.

• Carburettors were commonly used in older cars and motorcycles.

• They have been largely replaced by fuel injection systems.

• Carburettors work by creating a vacuum that draws in air and fuel.

• The mixture is then sent to the engine's cylinders for combustion.

• Carburettors require regular maintenance and adjustment to function properly.

Proficient in AutoCAD with 5+ years of experience creating detailed drawings and designs for inspection purposes.

• Extensive experience using AutoCAD to create 2D and 3D drawings

• Knowledge of industry standards and best practices for drafting and design

• Ability to interpret technical drawings and blueprints accurately

• Experience collaborating with engineers and other team members to ensure accurate and efficient designs

• Familiarity with AutoCAD tools and features to optimize workfl...read more

Four wheeler vehicles are typically designed with four wheels for stability and improved traction.

• Four wheeler vehicles include cars, trucks, SUVs, and vans.

• Having four wheels allows for better weight distribution and handling.

• Four wheel drive (4WD) and all wheel drive (AWD) systems are common in four wheeler vehicles.

• Examples: Toyota Camry, Ford F-150, Jeep Wrangler, Honda Odyssey

The strength of first class bricks is typically around 10.5 N/mm^2 to 14 N/mm^2.

• First class bricks are high-quality bricks used for construction.

• They have a minimum crushing strength of 10.5 N/mm^2.

• The maximum crushing strength of first class bricks is around 14 N/mm^2.

• These bricks are uniform in shape and size, with sharp edges and smooth surfaces.

Hot tap is a method used to create a connection to a pressurized system without shutting it down.

• Hot tap involves drilling into a pressurized system to create a branch connection.

• It is commonly used in pipelines to install new equipment or perform maintenance without interrupting the flow.

• Specialized equipment and procedures are used to ensure safety and integrity of the system during hot tapping.

• Examples include adding a new valve to a pipeline without shutting down the flow...read more

Various types of NDT methods are used including ultrasonic testing, radiographic testing, magnetic particle testing, liquid penetrant testing, and visual testing.

• Ultrasonic testing is used to detect internal flaws in materials by sending high-frequency sound waves through the material.

• Radiographic testing uses X-rays or gamma rays to inspect the internal structure of a component.

• Magnetic particle testing is used to detect surface and near-surface flaws in ferromagnetic materi...read more

Colour codes are used to identify different materials in industries for easy identification and safety purposes.

• Colour codes are typically used in industries like construction, manufacturing, and engineering.

• For example, yellow is often used for flammable materials, red for fire protection equipment, and green for safety equipment.

• The colour coding system may vary between industries and organizations.

• It is important for inspection engineers to be familiar with the colour code...read more

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

• Valves can be opened or closed to allow or stop the flow of fluids or gases.

• They are commonly used in pipelines, plumbing systems, and industrial processes.

• Types of valves include gate valves, ball valves, butterfly valves, and globe valves.

ASME 31.1 is a code standard for pressure piping systems in power plants and industrial facilities.

• ASME 31.1 provides guidelines for the design, construction, inspection, and testing of pressure piping systems.

• It covers piping systems that transport steam, water, oil, gas, and other fluids under pressure.

• The standard also includes requirements for materials, welding, nondestructive examination, and pressure testing.

• IBR (Indian Boiler Regulations) is a set of regulations that ...read more

WPS/PQR/WPQ are documents used in welding to ensure quality and compliance with standards.

• WPS stands for Welding Procedure Specification, detailing the welding process to be used

• PQR stands for Procedure Qualification Record, documenting the testing and results of a specific welding procedure

• WPQ stands for Welder Performance Qualification, certifying the welder's ability to perform the specified welding procedure

• These documents are essential for ensuring the quality and integr...read more

Testing processes are essential for ensuring the quality and safety of products or systems.

• Testing processes involve conducting various tests to evaluate the performance, reliability, and safety of products or systems.

• Types of testing processes include non-destructive testing, destructive testing, visual inspection, and dimensional inspection.

• Testing processes help identify defects, weaknesses, or areas for improvement in products or systems.

• Examples of testing processes incl...read more

RT and UT are non-destructive testing methods used in inspection to detect flaws in materials.

• RT stands for Radiographic Testing, which uses X-rays or gamma rays to inspect the internal structure of materials.

• UT stands for Ultrasonic Testing, which uses high frequency sound waves to detect flaws or measure thickness in materials.

• RT is commonly used for detecting internal defects in welds, castings, and forgings.

• UT is often used for inspecting welds, pipelines, and other struc...read more

Quality process involves systematic activities to ensure products or services meet specified requirements and customer satisfaction.

• Quality planning: Establishing quality objectives and processes to meet customer requirements.

• Quality control: Monitoring and verifying that products or services meet specified requirements.

• Quality assurance: Ensuring that processes are implemented effectively to meet quality objectives.

• Continuous improvement: Identifying areas for improvement an...read more

Welding defects are imperfections in the weld that can weaken its strength and integrity.

• Porosity: caused by gas entrapment during welding process

• Cracks: can be due to improper cooling or excessive stress

• Incomplete penetration: when the weld does not fully penetrate the base metal

• Undercutting: when the weld metal is eroded from the base metal

• Slag inclusion: occurs when slag is trapped in the weld metal

Types of exchangers include shell and tube, plate, and air-cooled exchangers.

• Shell and tube exchangers are most commonly used in industrial applications.

• Plate exchangers are compact and efficient, often used in HVAC systems.

• Air-cooled exchangers are used when water is scarce or when process fluid must be kept separate from cooling water.

Types of welding include MIG, TIG, stick, and flux-cored welding.

• MIG welding uses a wire electrode and shielding gas to join metals together.

• TIG welding uses a tungsten electrode and inert gas to create a strong weld.

• Stick welding, also known as shielded metal arc welding, uses a flux-coated electrode.

• Flux-cored welding uses a tubular wire filled with flux to protect the weld from contamination.