Paharpur Cooling Towers Assistant Engineer Interview Questions and Answers

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Q1. About your MBA/PGDM course. Personal details. Whether having Bike and laptop. If a candidate has bike and laptop and the aptitude test and GD round has been cleared then the chances of getting the job is 9...read more
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Q1. Different types of Welding process
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Different types of welding processes include MIG, TIG, stick, and flux-cored welding.
• MIG (Metal Inert Gas) welding uses a wire electrode and shielding gas to join metal pieces together.

• TIG (Tungsten Inert Gas) welding uses a non-consumable tungsten electrode and inert gas to create a strong weld.

• Stick welding, also known as Shielded Metal Arc Welding (SMAW), uses a flux-coated electrode to create the weld.

• Flux-cored we...read more
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Q2. NDT types process, code
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Q3. Types of defects
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Types of defects include design defects, manufacturing defects, and marketing defects.
• Design defects are flaws in the product's design that make it unsafe or unusable.

• Manufacturing defects occur during the production process and result in a faulty product.

• Marketing defects involve improper labeling, instructions, or warnings about the product.

• Examples: A car with a faulty airbag system (manufacturing defect), a medicat...read more
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Q4. Isometric drawing of piping and Ga diagram of vessel
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Isometric drawing of piping shows 3D layout of pipes while GA diagram of vessel shows general arrangement of vessel components.
• Isometric drawing of piping provides a 3D representation of how pipes are laid out in a system

• GA diagram of vessel gives a general overview of the arrangement of components within the vessel

• Both drawings are essential for understanding the layout and design of the piping system and vessel
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Q5. Experience in chemistry plant
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I have 5 years of experience working in a chemistry plant, overseeing production processes and ensuring quality control.
• Managed daily operations in a chemistry plant

• Implemented safety protocols and procedures

• Monitored production processes to ensure efficiency and quality

• Collaborated with cross-functional teams to troubleshoot issues and optimize processes
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Q6. Erection plant project
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Q1. What is the WPS essential variables?
Ans. 
WPS essential variables are key parameters that must be monitored and controlled to ensure the quality and integrity of a welding procedure.
• Essential variables include parameters such as welding process, material type, thickness, joint design, and preheat temperature.

• Monitoring and controlling these variables is crucial to maintaining the desired weld quality and mechanical properties.

• Examples of essential variables in...read more
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Q2. Welder performance essential variables
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Q3. P91 welding procedure
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P91 welding procedure involves welding of P91 steel, a type of alloy steel commonly used in high temperature applications.
• P91 steel is a type of alloy steel known for its high temperature strength and corrosion resistance.

• Welding P91 steel requires preheating and post-weld heat treatment to prevent cracking.

• Proper filler material and welding technique must be used to ensure a strong weld.

• Common welding processes for P9...read more
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Q4. Hardness value for P91 material
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The hardness value for P91 material is typically around 250 HB.
• Hardness value is measured using the Brinell hardness test

• P91 material is a type of steel alloy commonly used in high temperature and pressure applications

• Typical hardness value for P91 material is around 250 HB
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Q5. Why preheat is required
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Preheating is required to ensure even cooking and proper texture of food.
• Preheating allows the oven to reach the desired temperature before placing the food inside

• Helps in even cooking by starting the cooking process immediately

• Ensures proper texture and browning of food items
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Q6. Alloy steel chemical composition
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Q7. IBR formalities
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Q1. Thermal shock of ESP and troubleshooting
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Thermal shock of ESP can lead to equipment failure, understanding troubleshooting methods is crucial for maintenance.
• Thermal shock occurs when there is a rapid change in temperature, causing stress on the equipment

• Troubleshooting methods include checking for loose connections, inspecting for physical damage, and monitoring temperature fluctuations

• Examples of troubleshooting steps include checking the power supply, insp...read more
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Q1. Basic questions of instruments. Basic understanding of boiler loops and control.
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Q2. May check your understanding of sequence of drawing for design engineering.
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Q3. Hook up drawing understanding they checked specially drun level transmitter hookup drawing..
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Q4. Understanding of basic engineering document i.e instrument list, io list, hookup, cable/jb schedule, cable interconnection diagram, loops and logic diagram
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Quantity aptitude, numerical methods