Tractebel Senior Piping Designer Interview Questions and Answers

Q1. What are isometric drawing and use
Ans. 
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
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Q2. What is Types of drawing Isometric
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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
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Q1. Explain the suction piping of pump?
Ans. 
Suction piping of a pump is the piping system that brings fluid into the pump from the source.
• Suction piping is designed to ensure a smooth flow of fluid into the pump without any air pockets or cavitation.

• The piping should be sized appropriately to prevent excessive pressure drop and maintain efficient pump operation.

• Proper alignment and support of the piping is crucial to prevent stress on the pump and ensure longevi...read more
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Q2. Why we used eccentric reducer in suction line with flat side up/
Ans. 
Eccentric reducers are used in suction lines with flat side up to prevent air pockets and improve flow efficiency.
• Eccentric reducers help in preventing air pockets from forming in the suction line

• Having the flat side up ensures that any trapped air can easily escape

• Improves flow efficiency by reducing turbulence and pressure drop

• Commonly used in applications where smooth flow is critical, such as pump suction lines
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Q3. What is figure 8?
Ans. 
Figure 8 is a type of knot commonly used in piping design to secure two ropes or cables together.
• Figure 8 knot is also known as a stopper knot due to its ability to prevent ropes from slipping through holes or other openings.

• It is easy to tie and untie, making it a popular choice for various applications in piping design.

• The figure 8 knot is often used in rock climbing, sailing, and rescue operations for its reliabilit
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Q1. Piping of control station
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Control station piping is essential for regulating and monitoring the flow of fluids in a system.
• Control station piping connects various components such as valves, instruments, and equipment to control the flow of fluids.

• Proper design of control station piping ensures efficient operation and safety of the system.

• Consider factors like pressure, temperature, and material compatibility when designing control station pipin...read more
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Q2. Suction piping of pump
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Suction piping of pump is crucial for efficient operation and performance.
• Suction piping should be designed to minimize friction losses and ensure proper flow to the pump.

• Proper sizing and layout of suction piping is essential to prevent cavitation and maintain pump efficiency.

• Consider factors such as pipe diameter, length, bends, and fittings when designing suction piping.

• Use smooth bore pipes, avoid sharp bends, and ...read more
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Q1. Unit plot plan development
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Q2. Leadership management
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Tank area design, layout . safety distance between tanks and location and recommendations for pump station piping and layout

Q1. What type of Pressure Tests are conducted on valves?
Ans. 
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
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Q2. What are some of the most important safety considerations you make when designing piping systems?
Ans. 
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
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Q1. Piping code equipment layout previous project related
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Q1. Equipment model , pump suction discharge
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Q1. Written test regarding symbols
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Q1. Hr salary negotiation
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Q1. Expansion stress formula
Ans. 
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
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Q2. IBR LINES details.pressure ratings etc
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Q3. Sustain stress formula
Ans. 
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
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