McDermott International Piping Design Engineer Interview Questions, Process, and Tips

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.

Isometric drawing is a 3D drawing technique used in piping to show a clear representation of piping layout.

• Isometric drawing is a type of 3D drawing that represents a 3D object in two dimensions.

• It is commonly used in piping to show the layout of pipes, fittings, and other components in a clear and detailed manner.

• Isometric drawings help in visualizing how components fit together and the overall layout of a piping syst...read more

Isometric drawings are 3D drawings that show a three-dimensional object in a two-dimensional format.

• Isometric drawings use three axes (x, y, z) to represent the object in 3D space.

• All three axes are equally angled from each other, typically at 120 degrees.

• Isometric drawings are commonly used in engineering and construction to visualize objects and structures.

• Examples of isometric drawings include piping layouts, archit

A pipe rack is a structure used to support pipes and other equipment in a plant or industrial facility.

• Pipe racks are typically made of steel and are designed to withstand the weight of the pipes and equipment they support.

• They are used to organize and route pipes throughout a facility, allowing for easy access and maintenance.

• Pipe racks can be located indoors or outdoors, and can be designed to accommodate a variety o...read more

Headroom clearance is the vertical distance between the highest point of a piping system and the ceiling or any obstruction above it.

• Headroom clearance is important to ensure safe and efficient installation and maintenance of piping systems.

• It is typically specified in building codes and industry standards.

• The required headroom clearance may vary depending on the type of piping system and its location.

• For example, a st...read more

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