Indraprastha Gas Tpi Inspection Engineer Interview Questions and Answers

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 fail...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 net

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...read more

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...read more

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 infra...read more

Various types of pipes are used in gas supply including steel, copper, polyethylene, and PVC.

• Steel pipes are commonly used for high-pressure gas transmission lines.

• Copper pipes are used for indoor gas lines and have good corrosion resistance.

• Polyethylene pipes are flexible and can be used for both underground and aboveground gas lines.

• PVC pipes are used for low-pressure gas distribution lines and have good chemical res...read more

Pressure to be supplied at various points in a Third Party Inspection Engineer role.

• The pressure at the tapping point refers to the pressure required for taking a sample or measurement from a pipeline.

• The pressure at the nozzle refers to the pressure required for the efficient operation of a specific equipment or device.

• The main gas pipeline pressure refers to the pressure required for the overall functioning and distr...read more

Types of joints include butt joint, lap joint, T-joint, corner joint, and edge joint.

• Butt joint: Two pieces of material are joined by their ends.

• Lap joint: One piece overlaps the other and they are fastened together.

• T-joint: One piece is perpendicular to the other, forming a T shape.

• Corner joint: Two pieces are joined at a right angle.

• Edge joint: Two pieces are joined along their edges.

Yes, various pipes with different diameters can be fitted.

• Different pipes can be fitted by using appropriate connectors or adapters.

• Measurements of the pipes' diameters should be taken accurately to ensure proper fitting.

• Consideration should be given to the flow requirements and pressure ratings of the pipes.

• Examples of fittings include couplings, reducers, elbows, and tees.

Tapping is a process of making a hole in a pipe or vessel for connecting a branch pipe. A riser is a vertical pipe used to transport fluids from a lower level to a higher level.

• Tapping is done to connect a branch pipe to the main pipe or vessel.

• Risers are commonly used in oil and gas drilling to transport drilling fluids from the wellbore to the surface.

• Tapping and riser installation should be done carefully to avoid l...read more