Lloyd Insulations DGM - Construction Interview Questions and Answers

Efficiency of fired boilers can be calculated by dividing the energy output by the energy input.

• Efficiency = (Energy output / Energy input) * 100%

• Energy output can be measured in terms of steam production or heat transfer to water

• Energy input is the fuel energy input to the boiler

• Efficiency can be improved by optimizing combustion, insulation, and heat recovery systems

The heat rate of a turbine is a measure of how efficiently it converts fuel into electricity.

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

• A lower heat rate indicates higher efficiency, as less fuel is needed to generate the same amount of electricity.

• Factors affecting heat rate include turbine design, operating conditions, and maintenance practices.

• For example, a combined cycl...read more

The erection sequence of a bi drum boiler involves several key steps to ensure proper installation and functionality.

• Start by preparing the foundation for the boiler to ensure stability and support.

• Next, assemble the lower drum and connect it to the foundation securely.

• Then, install the upper drum and connect it to the lower drum using appropriate fittings.

• After that, install the boiler tubes and headers to facilitate ...read more

Safety interlock of fired boilers is a crucial system that ensures safe operation by preventing unsafe conditions.

• Safety interlock system is designed to shut down the boiler if unsafe conditions are detected, such as low water level or high pressure.

• Interlocks may include sensors, alarms, and automatic shutdown mechanisms.

• Regular maintenance and testing of safety interlock systems are essential to ensure they function ...read more