Nasser S. Al Hajri Corporation Hvac Ducting Supervisor Interview Questions, Process, and Tips

About pipe laying work staircase

Q1. About pipe laying and tank erection
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Q1. Anything about pipe laying
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Question answer related piping job ,material related, manpower handling etc...

Q1. Piping related question, Piping material astm code
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Q2. Types of piping drawing
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Types of piping drawings include Piping and Instrumentation Diagrams (P&IDs), Isometric drawings, and Orthographic drawings.
• Piping and Instrumentation Diagrams (P&IDs) show the piping system along with instruments and control devices.

• Isometric drawings show the 3D representation of the piping system.

• Orthographic drawings show the top, front, and side views of the piping system.
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Q3. Difference b/w construction and fabrication drawing?
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Construction drawings show how a structure will be built, while fabrication drawings provide detailed instructions for manufacturing individual components.
• Construction drawings focus on overall structure layout and dimensions

• Fabrication drawings provide detailed instructions for manufacturing individual components

• Construction drawings are used by contractors on site, fabrication drawings are used by manufacturers in wo...read more
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Q4. Piping material code ?
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Piping material code refers to the standards and specifications used for selecting materials for piping systems.
• Piping material codes are used to ensure the proper selection of materials based on factors like pressure, temperature, and fluid being transported.

• Common piping material codes include ASME B31.3 for process piping, ASTM for materials specifications, and API for oil and gas piping.

• These codes provide guidelin...read more
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Q5. Difference b/w pipe and tubes
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Pipes are used to transport fluids or gases, while tubes are used for structural applications or heat transfer.
• Pipes are measured by their inside diameter, while tubes are measured by their outside diameter.

• Pipes are typically round in shape, while tubes can be round, square, or rectangular.

• Pipes are commonly used in plumbing, HVAC systems, and oil and gas industries, while tubes are used in construction, automotive, a
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Q1. What is piping engineer
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A piping engineer is a professional responsible for designing, planning, and overseeing the installation of piping systems in various industries.
• Designing piping systems to transport fluids or gases

• Selecting appropriate materials for piping construction

• Ensuring compliance with industry standards and regulations

• Collaborating with other engineers and stakeholders on project requirements

• Performing stress analysis and calc
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Q2. What is hydro testing
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Hydro testing is a process of testing the strength and integrity of pipelines or vessels by filling them with water under pressure.
• Hydro testing is a common method used to ensure that pipelines or vessels can safely withstand the pressure they will be subjected to during normal operation.

• During hydro testing, the pipeline or vessel is filled with water and pressurized to a level higher than the operating pressure to ch...read more
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1st we got aptitude test which have 40 tech &20 non tech .....and total 500+ candidate was present.

Q1. Training in rail wheel plant
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Q2. Technical questions about cp vessel and pressure vessel and equipment
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Q3. Types of equipment used in piping industry
Ans. 
Various types of equipment are used in the piping industry for different purposes.
• Pumps

• Compressors

• Valves

• Heat exchangers

• Filters

• Storage tanks

• Piping materials

• Flanges

• Gaskets

• Instrumentation and control systems
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Q4. What is the standard code of pipe
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The standard code of pipe refers to the set of regulations and specifications that govern the design, construction, and use of pipes in various industries.
• The standard code of pipe varies depending on the industry and the type of pipe being used.

• For example, in the oil and gas industry, the American Petroleum Institute (API) provides standards for pipes used in drilling and production operations.

• In the construction ind...read more
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Q5. Tell me about isometric drawing
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Isometric drawing is a 3D representation of an object on a 2D surface.
• It shows all three dimensions of an object in a single view.

• It uses a 30-degree angle for all three axes.

• It is commonly used in engineering and construction to show piping and structural details.

• Isometric drawings are often created using computer-aided design (CAD) software.

• They are useful for visualizing how different parts of a system fit together.
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