Nippon Steel Sumikin Engineering Piping Engineer Interview Questions and Answers

Various pressure tests are conducted on valves including hydrostatic test, pneumatic test, and cryogenic test.

• Hydrostatic test is conducted by filling the valve with water and pressurizing it to a specified pressure to check for leaks.

• Pneumatic test involves using air or nitrogen to pressurize the valve and check for leaks or defects.

• Cryogenic test is performed at low temperatures to ensure the valve can withstand extr...read more

Safety considerations in designing piping systems are crucial for preventing accidents and ensuring the integrity of the system.

• Ensuring proper material selection to withstand the intended pressure and temperature conditions

• Implementing proper support and restraint systems to prevent excessive stress and vibration

• Incorporating adequate access points for maintenance and inspection

• Following relevant codes and standards s...read more

The pump should be placed in a location that allows for easy maintenance and operation, while also considering the space and weight limitations of the rack.

• Consider the flow direction and orientation of the pump

• Ensure there is enough space for maintenance and repair

• Take into account the weight of the pump and its impact on the rack

• Consider the location of other equipment and piping in the area

Todo list in SP3D is a list of tasks to be completed. Errors may include missing information or incorrect data.

• Todo list in SP3D is a list of tasks that need to be completed in the software.

• Errors in the todo list may include missing information or incorrect data.

• To encounter these errors, the user should carefully review the todo list and ensure that all necessary information is provided.

• For example, if a piping desig...read more

Society is a complex web of individuals with diverse backgrounds, beliefs, and values.

• Society is constantly evolving and changing.

• It is important to recognize and respect the differences among individuals.

• Social issues such as inequality, discrimination, and poverty need to be addressed.

• Community involvement and support are crucial for a healthy society.

• Education and awareness can help promote positive change.

• Technolog...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