Jacobs Engineering Group Senior Piping Engineer Interview Questions and Answers

There are several types of gaskets used in piping, including spiral wound, ring joint, and sheet gaskets.

• Spiral wound gaskets are commonly used for high pressure and temperature applications.

• Ring joint gaskets are used in high pressure and high temperature applications, typically in oil and gas industries.

• Sheet gaskets are versatile and come in various materials such as rubber, cork, and graphite.

Piping refers to a system of pipes used to transport fluids or gases from one location to another.

• Piping is used in various industries such as oil and gas, chemical, pharmaceutical, and construction.

• It involves the design, fabrication, installation, and maintenance of pipes.

• Pipes can be made of materials like steel, copper, PVC, or HDPE.

• Piping systems can include fittings, valves, and other components to control the fl...read more

Types of pipes used in piping include steel, copper, PVC, and HDPE.

• Steel pipes: commonly used for high-pressure applications

• Copper pipes: used for water supply lines

• PVC pipes: lightweight and easy to install, commonly used for drainage systems

• HDPE pipes: high-density polyethylene pipes used for underground gas and water lines

Bevel angle of piping refers to the angle formed between the prepared edge of the pipe and a plane perpendicular to the pipe axis.

• Bevel angle is typically specified in degrees, such as 30° or 45°.

• It is important for welding processes to ensure proper fit-up and joint strength.

• Different bevel angles may be required based on the material being used and the welding procedure being employed.

Rack elevation and piping arrangement are crucial for efficient piping design. Distance between two pipes depends on the fluid being transported.

• Rack elevation should be considered while designing piping layout to avoid clashes and ensure proper support.

• Piping arrangement over rack should be designed to minimize stress on the rack and ensure easy maintenance.

• Distance between two pipes depends on the fluid being transpo...read more

I'm sorry, but I cannot answer that question as it is unclear what package and proof you are referring to.

Expansion stress formula calculates the stress caused by thermal expansion or contraction.

• Expansion stress formula is given by: ΔL/L = αΔT, where ΔL is the change in length, L is the original length, α is the coefficient of thermal expansion, and ΔT is the change in temperature.

• The formula can be used to calculate the stress caused by thermal expansion or contraction in piping systems.

• The formula assumes that the mater...read more

Sustain stress formula calculates the maximum allowable stress for a given material under sustained loading.

• Sustain stress formula is used in piping stress analysis to determine the maximum allowable stress for a given material under sustained loading.

• The formula takes into account the material's yield strength, ultimate tensile strength, and safety factor.

• Sustain stress formula is expressed as S = (Sy/FS) + (Su/FS) * ...read more