Sadara Chemical Company Instrument Commissioning Technician Interview Questions and Answers

The amount of space filled by dust varies depending on the quantity and size of particles.

• The space filled by dust can range from a small area on a surface to an entire room or building.

• Factors such as air circulation, particle size, and accumulation over time can affect the amount of space filled by dust.

• For example, a dusty bookshelf may only fill a few square feet of space, while a neglected attic could be completel

Measurement refers to the process of determining the size, length, quantity, or extent of something using standard units.

• Measurement involves comparing an unknown quantity to a known standard unit.

• Examples of measurements include length (inches, meters), weight (pounds, kilograms), volume (liters, gallons), and time (seconds, minutes).

• Accurate measurements are essential in fields such as science, engineering, and const

One liter of cement-based primer typically covers around 8 to 10 square meters of surface area.

• One liter of cement-based primer covers approximately 8 to 10 square meters

• Coverage may vary depending on the porosity and texture of the surface

• It is recommended to refer to the manufacturer's instructions for specific coverage rates

Types of primers include bonding primers, stain-blocking primers, and high-build primers.

• Bonding primers help paint adhere to surfaces like metal or plastic

• Stain-blocking primers prevent stains from bleeding through paint

• High-build primers are thick and fill in imperfections on surfaces

• Other types include shellac-based primers, oil-based primers, and water-based primers

Oil paint can take anywhere from a few days to several weeks to fully dry, depending on factors like thickness and environmental conditions.

• Oil paint can take anywhere from a few days to several weeks to dry completely.

• Factors like the thickness of the paint layer and environmental conditions (humidity, temperature) can affect drying time.

• Thicker layers of oil paint will take longer to dry compared to thin layers.

• Paint...read more

The plant is a manufacturing facility that produces products through a series of processes.

• The plant has multiple production lines that operate simultaneously

• Raw materials are received and stored in the warehouse before being processed

• The production process involves mixing, heating, cooling, and packaging

• Quality control checks are performed at various stages of the process

• Finished products are stored in the finished go

I perform a variety of tests including diagnostic tests, troubleshooting tests, performance tests, and quality assurance tests.

• Diagnostic tests to identify issues or problems

• Troubleshooting tests to pinpoint the cause of malfunctions

• Performance tests to evaluate the functionality of systems or equipment

• Quality assurance tests to ensure products meet standards

Adhesion test is performed by applying a specific force to determine the strength of adhesion between two materials.

• Prepare the surfaces to be tested by cleaning and ensuring they are dry

• Apply a specific force to the surfaces, such as using a pull-off tester for coatings

• Measure the force required to separate the materials to determine adhesion strength

• Repeat the test multiple times for accuracy

• Record and analyze the re

Raw materials for paint include pigments, binders, solvents, and additives.

• Pigments: Provide color and opacity to the paint (e.g. titanium dioxide, iron oxide)

• Binders: Holds the pigment particles together and adhere them to the surface (e.g. acrylic, alkyd)

• Solvents: Help in the application and drying of the paint (e.g. water, mineral spirits)

• Additives: Enhance properties like durability, flow, and drying time (e.g. ant

Mass transfer is the movement of substances from one place to another.

• Mass transfer involves the movement of components in a system due to differences in concentration, pressure, or temperature.

• Examples include the diffusion of gases in air, the separation of components in distillation processes, and the absorption of gases in liquids.

• Mass transfer is important in various industries such as chemical engineering, food p

Distillation is a process of separating components of a liquid mixture based on differences in boiling points.

• Distillation involves heating the liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form.

• The components with lower boiling points will vaporize first and be collected, while the components with higher boiling points will remain in the liquid phase.

• Common examples of distilla...read more