10+ Edutech Media Services Interview Questions and Answers

To reduce LOI of Bed Ash fly ash, ash seave analysis can be done and the following steps can be taken.

• Ash seave analysis can help identify the particle size distribution of the ash.

• The LOI can be reduced by controlling the combustion process and ensuring complete combustion.

• Adding additives like limestone or activated carbon can also help reduce LOI.

• Proper maintenance of the boiler and ash handling system can also prevent the accumulation of unburnt carbon.

• Regular cleaning of...read more

There are various types of welding, including T-joints, butt joints, lap joints, corner joints, and top-to-bottom and bottom-to-top welding.

• T-joints involve welding two pieces of metal perpendicular to each other, forming a T shape.

• Butt joints involve welding two pieces of metal end-to-end.

• Lap joints involve welding two pieces of metal that overlap each other.

• Corner joints involve welding two pieces of metal that meet at a corner.

• Top-to-bottom and bottom-to-top welding involv...read more

Boiler efficiency, APC Heat rate and Coal GCV are important factors in determining the performance of a boiler.

• Boiler efficiency is the ratio of energy output to energy input and is affected by factors such as combustion efficiency, heat transfer efficiency, and radiation losses.

• APC Heat rate is the amount of heat energy required to produce a unit of electricity and is affected by factors such as boiler efficiency, steam turbine efficiency, and generator efficiency.

• Coal GCV (...read more

Welding is the process of permanently joining two metal parts by melting and fusing them together.

• Welding involves the use of heat to melt the base metals and a filler material to create a strong joint.

• Different welding techniques include TIG (Tungsten Inert Gas) and ARC (Shielded Metal Arc) welding.

• TIG welding uses a non-consumable tungsten electrode to create the arc and requires a separate filler material.

• ARC welding uses a consumable electrode coated in flux to create the...read more

Welding positions in pipes include 1g, 2g, 3g, 4g, 5g, and 6g.

• 1g is a flat position with the pipe in a horizontal position

• 2g is a horizontal position with the pipe in a vertical position

• 3g is a vertical position with the pipe in a fixed position

• 4g is a fixed position with the pipe in a horizontal position

• 5g is a horizontal position with the pipe at a 45-degree angle

• 6g is a fixed position with the pipe at a 45-degree angle

There are 6 types of welding joints: butt joint, lap joint, corner joint, tee joint, edge joint, and scarf joint.

• Butt joint: two pieces of metal are joined end-to-end

• Lap joint: two pieces of metal overlap and are joined together

• Corner joint: two pieces of metal are joined at a right angle

• Tee joint: two pieces of metal are joined at a T-shaped intersection

• Edge joint: two pieces of metal are joined along their edges

• Scarf joint: two pieces of metal are joined by overlapping and ...read more

The Control Room Engineer is expected to have knowledge about steam, water, flue gas, ash handling, fuel handling system, boiler, turbine, DCS system of automation, FCV, feed contact stations, and three or single element system.

• Steam is used to generate power in a power plant.

• Water is used as a coolant in the condenser.

• Flue gas is the exhaust gas from the combustion process.

• Ash handling system is used to handle the ash generated from the combustion process.

• Fuel handling syste...read more

A boiler is a closed vessel that generates steam by heating water. It is used in various industries for heating and power generation.

• Boilers are used in industries such as power generation, chemical processing, and food and beverage production.

• The basic purpose of a boiler is to convert water into steam, which can be used for heating, power generation, or other industrial processes.

• Boilers work by heating water to its boiling point, which produces steam that is then used for ...read more

Fuel handling system manages the storage, transfer, and distribution of fuel to the power plant.

• Fuel is stored in large tanks and transported to the power plant through pipelines.

• The fuel is then transferred to the boiler where it is burned to produce steam.

• The steam is then used to turn the turbines which generate electricity.

• The system also includes safety measures to prevent accidents and ensure proper functioning.

• Regular maintenance and inspections are necessary to ensure...read more

Types of boilers include fire tube, water tube, and electric boilers. Installation process involves site preparation, assembly, piping, and testing.

• Types of boilers: fire tube, water tube, electric

• Installation process: site preparation, assembly, piping, testing

• Examples: Fire tube boiler - used in small industrial plants, Water tube boiler - used in power stations

Thermax offers a wide range of products including boilers, heaters, chillers, water treatment solutions, and waste heat recovery systems.

• Boilers

• Heaters

• Chillers

• Water treatment solutions

• Waste heat recovery systems

Turbine specifications refer to the technical details of the turbine used in power generation.

• Turbine specifications include the type of turbine, its capacity, efficiency, and operating conditions.

• The type of turbine can be either steam or gas turbine.

• Capacity refers to the amount of power the turbine can generate.

• Efficiency is the ratio of the energy output to the energy input.

• Operating conditions include the temperature, pressure, and speed at which the turbine operates.