Plant Design Engineer Interview Questions and Answers

Various materials used for pipe making include steel, copper, PVC, and HDPE.

• Steel: commonly used for high-pressure applications

• Copper: used for water supply lines

• PVC: lightweight and corrosion-resistant, often used for drainage systems

• HDPE: flexible and durable, suitable for underground piping

Hoop stresses in pipes are circumferential stresses that occur due to internal pressure, and their ratios are important for determining the safety of the pipe.

• Hoop stress is calculated using the formula: P*D/2t, where P is the internal pressure, D is the diameter of the pipe, and t is the thickness of the pipe wall.

• The ratio of hoop stress to longitudinal stress is important in determining the safety factor of the pipe. A lower ratio indicates a safer design.

• In thick-walled p...read more