Medhaj Techno Concept Inspection Coordinator Interview Questions and Answers

Valves are mechanical devices used to control the flow of fluids within a system. They can be classified into different types based on their design and function.

• Gate valves: used to fully open or close the flow of fluid

• Ball valves: have a spherical closure element to control flow

• Check valves: allow flow in one direction only to prevent backflow

• Butterfly valves: have a disc that rotates to control flow

• Pressure relief va...read more

Defects in welding can compromise the integrity of the joint and lead to structural failures.

• Common welding defects include porosity, lack of fusion, cracks, and undercutting.

• Porosity is caused by gas entrapment during the welding process.

• Lack of fusion occurs when the weld metal fails to fuse with the base metal.

• Cracks can result from excessive stress or improper cooling of the weld.

• Undercutting is a groove formation ...read more

The tolerance of UT test refers to the acceptable range of error in the test results.

• Tolerance is typically specified in the testing standards or procedures.

• It is important to ensure that the equipment used for UT testing is calibrated within the specified tolerance limits.

• Deviation from the tolerance range may indicate a need for retesting or further investigation.

• Examples of tolerance limits for UT testing may includ

WPS stands for Welding Procedure Specification and PQR stands for Procedure Qualification Record.

• WPS is a document that provides detailed welding instructions and parameters for a specific welding job.

• PQR is a record of the welding parameters used during the qualification of a welding procedure.

• WPS and PQR are essential documents in the welding industry to ensure quality and consistency in welding processes.

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 con...read more

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.

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...read more

The ratio of M25 concrete is 1:1:2

• The ratio of M25 concrete is 1 part cement, 1 part sand, and 2 parts aggregate

• This ratio is commonly used in construction for medium strength concrete

• For example, to make 1 cubic meter of M25 concrete, you would need 1/4 cubic meters of cement, 1/4 cubic meters of sand, and 1/2 cubic meters of aggregate

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 o...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.

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