10+ DCS Engineer Interview Questions and Answers

SSC increases when load is reduced due to increased reactive power. Decreasing vacuum may indicate a leak or malfunction. Turbine bearing temperatures and alarms/trippings values depend on specific turbine model and operating conditions.

• SSC (Synchronous Condenser Capacity) increases when load is reduced due to increased reactive power.

• Decreasing vacuum may indicate a leak or malfunction in the system. As a DCS engineer, investigate the cause and take appropriate action.

• Turbin...read more

I have handled Honeywell Experion PKS DCS with iOS capacity of 50,000 points.

• I have experience working with Honeywell Experion PKS DCS.

• The iOS capacity of the DCS I handled was 50,000 points.

• I am familiar with the configuration and programming of the DCS.

• I have worked on various projects involving the DCS, including installation, commissioning, and maintenance.

• I have also provided training to operators and maintenance personnel on the use of the DCS.

Controlled extraction is a process where the extraction rate is regulated, while uncontrolled extraction is a process where the extraction rate is not regulated.

• Controlled extraction involves regulating the rate of extraction to achieve a desired outcome

• Uncontrolled extraction involves allowing the extraction to occur without any regulation or control

• Examples of controlled extraction include brewing coffee or tea, while uncontrolled extraction can occur in natural processes l...read more

The heat rate of a plant is a measure of its efficiency in converting fuel into electricity.

• Heat rate is typically measured in British thermal units (BTUs) per kilowatt-hour (kWh) of electricity generated.

• A lower heat rate indicates a more efficient plant, as it requires less fuel to produce the same amount of electricity.

• Factors that affect heat rate include the type of fuel used, the design and condition of the plant's equipment, and the operating conditions.

• Calculating the...read more

DCS loops include feedback, feedforward, and cascade loops. Cascade loop involves two or more loops working together.

• Feedback loop: measures output and adjusts input to maintain desired output

• Feedforward loop: anticipates changes in input and adjusts output accordingly

• Cascade loop: involves two or more loops working together to control a process. The output of one loop is used as the setpoint for another loop.

• Example: controlling the temperature of a chemical reactor using a ...read more

Distillation column design principles involve understanding the separation process, heat transfer, and fluid dynamics.

• Understanding the separation process is crucial for designing an efficient distillation column.

• Consider the heat transfer requirements to ensure proper temperature control within the column.

• Fluid dynamics play a key role in determining the flow patterns and efficiency of the distillation process.

Synchronized light up of the plant can be achieved through proper planning and implementation of control systems.

• Develop a detailed plan for the synchronization process

• Install and configure a control system that can handle the synchronization

• Ensure that all lighting fixtures are compatible with the control system

• Test the synchronization process thoroughly before implementation

I have handled MSDS of various chemicals including Xylene, Toluene, and Acetone.

• I have experience in reading and interpreting MSDS sheets

• I am aware of the hazards associated with the chemicals I have handled

• I have followed proper safety protocols while handling these chemicals

• Examples of chemicals I have handled include Xylene, Toluene, and Acetone

The most important question is the one that leads to the solution.

• The question that helps identify the root cause of a problem

• The question that helps make an informed decision

• The question that helps achieve a goal

• The question that helps improve a process or system

Critical speed of ball mill is the speed at which the centrifugal forces equal gravitational forces at the mill shell's inside surface.

• Critical speed is calculated by the formula: Nc = 1/(2*pi*sqrt(D/g)) where Nc is the critical speed, D is the diameter of the mill in meters, and g is the acceleration due to gravity (9.81 m/s^2).

• At critical speed, the grinding media in the mill starts rotating with the mill shell and no longer falls back, but stays on the perimeter of the mil...read more

Yokogawa and Honeywell are both industrial automation companies, but with different areas of expertise.

• Yokogawa specializes in process control systems, measurement instruments, and test equipment.

• Honeywell focuses on aerospace, building technologies, and performance materials.

• Yokogawa has a strong presence in the oil and gas industry, while Honeywell has a strong presence in aviation and defense.

• Both companies offer similar products such as distributed control systems and saf...read more

AFBC start-up procedures involve several steps to ensure safe and efficient operation.

• Inspect fuel and air supply systems

• Check boiler water level and pressure

• Purge furnace and flue gas passages

• Start ID and FD fans

• Ignite fuel and adjust air flow

• Monitor temperature and pressure

• Gradually increase load

Priming is the process of filling a pump with liquid to create suction and facilitate the flow of the liquid through the system.

• Ensure the pump is properly connected to the system

• Open the pump's priming valve to allow air to escape and liquid to enter

• Monitor the pump's pressure gauge to ensure proper priming

• Close the priming valve once the pump is fully primed

• Start the pump to begin the flow of liquid through the system

Pumps can be started by following proper procedures and ensuring all safety measures are in place.

• Check if the pump is properly connected to power source

• Ensure all valves are open and there are no blockages in the system

• Start the pump by following the manufacturer's instructions

• Monitor the pump operation for any abnormalities

• Shut down the pump properly when not in use

Scaling in DCS engineering refers to adjusting the size or magnitude of a system or process.

• Scaling can affect the accuracy and resolution of measurements in a DCS system.

• It can impact the range of values that can be represented or controlled.

• Scaling factors may need to be applied to ensure compatibility between different components or systems.

• For example, scaling may be necessary when integrating sensors with different measurement ranges into a DCS system.