Arab Shipbuilding and Repair Yard Interview Questions and Answers

The type of methods in WPS in piping section include SMAW, GTAW, GMAW, and FCAW.

• SMAW (Shielded Metal Arc Welding) is commonly used for welding carbon steel pipes.

• GTAW (Gas Tungsten Arc Welding) is used for welding stainless steel and non-ferrous materials.

• GMAW (Gas Metal Arc Welding) is suitable for welding thicker materials in piping section.

• FCAW (Flux-Cored Arc Welding) is often used for welding high-strength steels

Various types of materials are used in pipes and other equipment on rigs and ships, including steel, aluminum, copper, and plastic.

• Steel is commonly used for pipes due to its strength and durability

• Aluminum is lightweight and corrosion-resistant, making it suitable for certain applications

• Copper is often used for piping in certain systems due to its excellent conductivity

• Plastic pipes are lightweight, easy to install,

NDT testing methods include ultrasonic testing, radiographic testing, magnetic particle testing, liquid penetrant testing, and visual testing.

• Ultrasonic testing uses high-frequency sound waves to detect flaws or measure thickness in materials.

• Radiographic testing involves the use of X-rays or gamma rays to inspect the internal structure of a component.

• Magnetic particle testing is used to detect surface and near-surface...read more

Schedule 80 pipe has thicker walls and higher pressure ratings compared to schedule 40 pipes.

• Schedule 80 pipes have thicker walls than schedule 40 pipes, making them suitable for higher pressure applications.

• Schedule 80 pipes are typically used in industrial settings where high pressure is a concern.

• Schedule 40 pipes are more commonly used in residential and light commercial applications.

• The schedule number refers to t...read more

Valves are devices used to control the flow of fluids or gases in a system. There are various types of valves designed for different purposes.

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

• Ball valves: have a spherical closure for quick on/off control

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

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

• Pressure relief valves: automaticall...read more

Various types of materials are used in ship construction, including steel, aluminum, fiberglass, and wood.

• Steel is commonly used for the hull and superstructure of ships due to its strength and durability.

• Aluminum is used for lightweight components such as decks and bulkheads.

• Fiberglass is used for smaller boats and yachts due to its corrosion resistance and ease of maintenance.

• Wood is still used in traditional boat bu...read more