Nasser S. Al Hajri Corporation Interview Questions and Answers

Q1. Question for scaffolding and erection
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Q2. How to make 2×2 scaffolding
Ans. 
2x2 scaffolding can be made using four 2x2 wooden poles and metal connectors.
• Get four 2x2 wooden poles of required length.

• Connect the poles using metal connectors to form a square base.

• Add vertical poles at each corner and secure them with metal connectors.

• Add horizontal poles at the top and bottom of the vertical poles to form the frame.

• Add diagonal braces for stability.

• Repeat the process for additional levels.

• Ensure
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Q3. How many date of inspection
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The number of inspections depends on the type of scaffolding and its usage.
• The number of inspections can range from daily to yearly.

• The frequency of inspections is determined by the type of scaffolding and its usage.

• For example, suspended scaffolding used for window cleaning may require daily inspections, while a stationary scaffold used for construction may require weekly inspections.

• The number of inspections should b...read more
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Q4. How many clamp of scaffolding
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The number of clamps required for scaffolding depends on the size and weight of the structure being built.
• The number of clamps needed for scaffolding varies depending on the size and weight of the structure being built

• The type of clamp used also affects the number required

• A qualified scaffolding inspector should be able to determine the appropriate number of clamps needed for a specific job
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Q5. What is scaffolding how to use
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Scaffolding is a temporary structure used to support workers and materials during construction or maintenance of buildings.
• Scaffolding is made up of metal pipes, tubes, and wooden planks.

• It is erected around the building to provide a safe working platform for workers.

• Scaffolding should be inspected regularly to ensure it is safe to use.

• Workers should wear appropriate safety gear when using scaffolding.

• Examples of scaff...read more
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Q1. Technical questions related to Coating
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Q2. Iso , sspc and astm standard
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Q1. Qualification details
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Q2. Experience details ( company position and project)
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Q1. Personal introduction
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Q2. Experience ( company, position and project)
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Q1. What is the meaning of hvac? Heating ventilation of air-conditioning.
Ans. 
HVAC stands for Heating, Ventilation, and Air Conditioning. It refers to the technology used for indoor environmental comfort.
• HVAC systems are used to regulate temperature, humidity, and air quality in buildings.

• They can include components such as furnaces, air conditioners, ductwork, and ventilation fans.

• Properly designed and maintained HVAC systems can improve energy efficiency and indoor air quality.

• HVAC technicians...read more
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Q2. What is the meaning of FCU?
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FCU stands for Fan Coil Unit, which is a device that contains a fan and a heat exchanger to regulate air temperature.
• FCU is commonly used in HVAC systems to provide heating or cooling to a space.

• It works by drawing in air from the room, passing it over a heat exchanger, and then blowing it back out into the room.

• FCUs can be wall-mounted, ceiling-mounted, or floor-mounted depending on the space and design requirements.

• E...read more
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Q3. What is the meaning of FD? Fd is fire damper.
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FD stands for Fire Damper, which is a device installed in HVAC ducts to prevent the spread of fire and smoke.
• FD is a crucial component of fire protection systems in buildings.

• It is designed to automatically close when it detects heat or smoke, preventing the spread of fire and smoke through the ducts.

• FDs are required by building codes to be installed in certain locations, such as walls, floors, and ceilings, to compart...read more
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Q4. What is the function of access door? Access door is one kind of inspection way of inside the installed duct.
Ans. 
Access door is an inspection way of inside the installed duct.
• Access doors are used to provide easy access to the inside of the duct for inspection, cleaning, and maintenance purposes.

• They are typically installed at regular intervals along the length of the duct.

• Access doors can be made of various materials such as metal, plastic, or fiberglass.

• They come in different sizes and shapes depending on the size and shape of ...read more
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Q5. How many kind of ducts? Various kinds of duct like..squre,round,y duct,elbow duct,
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Q6. The types of grill? Return, supply, fress air grill, etc.
Ans. 
There are various types of grills used in HVAC ducting such as return, supply, fresh air, exhaust, and transfer grills.
• Return grills are used to extract air from a room and return it to the HVAC system.

• Supply grills are used to supply conditioned air to a room.

• Fresh air grills are used to bring in fresh air from outside.

• Exhaust grills are used to remove stale air from a room.

• Transfer grills are used to transfer air fro
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Q7. What is VCD?.. Volume control damper.
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VCD stands for Volume Control Damper, which is used to regulate the airflow in HVAC systems.
• VCD is a type of damper that is installed in HVAC ducts to control the volume of air flowing through them.

• It is typically made of galvanized steel and has blades that can be adjusted to regulate the airflow.

• VCDs are commonly used in commercial and industrial HVAC systems to maintain proper air balance and temperature control.

• The...read more
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Q8. What types of ducts? Supply duct return duct,fress air duct, exhaust duct.
Ans. 
There are four types of ducts: supply duct, return duct, fresh air duct, and exhaust duct.
• Supply ducts carry conditioned air from the HVAC system to the rooms.

• Return ducts carry air from the rooms back to the HVAC system.

• Fresh air ducts bring in outside air to improve indoor air quality.

• Exhaust ducts remove stale air and pollutants from the building.
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Q9. What is the supply duct? Cool air supply from the unit to room.
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The supply duct is responsible for delivering cool air from the unit to the room.
• Supply ducts are typically made of metal or flexible material and are installed in the walls, floors, or ceilings of a building.

• They are connected to the air conditioning unit and distribute cool air throughout the building.

• Properly sized and installed supply ducts ensure that each room receives the appropriate amount of cool air.

• Regular m...read more
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Q10. What is return duct? The return duct function is way of un fress room air return to outside of room.
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Return duct is a part of HVAC system that carries air from a room back to the air handler to be conditioned and recirculated.
• Return ducts are typically larger in size than supply ducts to accommodate the volume of air being returned.

• They can be located in walls, ceilings, or floors depending on the design of the building.

• Return ducts can also have filters installed to remove dust and other particles from the air before...read more
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Q1. How many days in RT.where your job location
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The number of days in RT varies depending on the job location.
• The number of days in RT can range from a few days to several weeks.

• The job location can be anywhere from a local facility to a remote site.

• The duration of RT may also depend on the complexity of the job and the number of components to be inspected.
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Q2. How many tipe in rt rayes
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There are different types of RT (Radiographic Testing) techniques used in NDT.
• RT techniques include film radiography, computed radiography, and digital radiography.

• Each technique has its own advantages and disadvantages.

• Film radiography is the oldest and most traditional method, while digital radiography is the newest and most advanced.

• Computed radiography is a hybrid of film and digital radiography.

• The choice of techn...read more
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Q3. How many tipe PT material
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There are several types of PT materials used in non-destructive testing.
• PT materials include water-washable, solvent-removable, and post-emulsifiable types.

• Water-washable PT materials are commonly used for surface crack detection.

• Solvent-removable PT materials are used for detecting cracks in non-porous materials.

• Post-emulsifiable PT materials are used for detecting fine cracks and are often used in aerospace applicati
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Q1. How many tipe in ndt.
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There are several types of NDT techniques used in various industries.
• NDT stands for Non-Destructive Testing.

• Some common types of NDT include ultrasonic testing, radiographic testing, magnetic particle testing, and liquid penetrant testing.

• Each type of NDT has its own advantages and limitations, and is used for specific applications.

• NDT is used in industries such as aerospace, automotive, construction, and manufacturing...read more
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Q2. How many tipe x-ray file
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Objective types questions

Q1. Safety management
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Q2. Safety workplace
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Q1. What is the noted point
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The noted point refers to a specific point or detail that has been highlighted or emphasized.
• The noted point is usually mentioned or marked for easy reference.

• It can be a key piece of information or a significant aspect that requires attention.

• For example, in a construction project, the noted point could be a safety guideline that must be strictly followed.

• In a meeting, the noted point could be a critical decision or a...read more
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Q2. Hanging scaffolding how make the work more capacity
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To increase the capacity of hanging scaffolding, additional support systems can be used.
• Use outriggers or counterweights to provide stability and balance.

• Install diagonal braces to enhance the structural integrity.

• Ensure proper anchoring and tie-backs to prevent movement.

• Use stronger and thicker materials for the scaffold components.

• Regularly inspect and maintain the scaffolding to identify any weaknesses or defects.
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Q3. How many years experience in GCC and which of the client I you working.
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Q4. How many degree ladder fixed
Ans. 
The number of degree ladder fixed depends on the specific requirements of the scaffolding project.
• The number of degree ladder fixed can vary depending on the height and configuration of the scaffolding.

• It is important to follow safety regulations and guidelines when determining the number of degree ladder fixed.

• The scaffolding supervisor should assess the project requirements and consult with engineers or safety expert...read more
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Q5. How many degree bracings
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The number of degree bracings depends on the specific scaffolding design and requirements.
• The number of degree bracings can vary based on the height and width of the scaffolding structure.

• Degree bracings are used to provide stability and support to the scaffolding system.

• The specific number of degree bracings needed will be determined by a qualified scaffolding engineer or supervisor.

• Examples of degree bracings include...read more
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