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Steag Energy Services Interview Questions and Answers
Q1. APH leakage what type problem in Boiler and identify of leakage .
APH leakage is a problem in boilers that can lead to reduced efficiency and increased emissions.
APH stands for Air Preheater, which is used to heat the combustion air before it enters the boiler.
Leakage in the APH can result in loss of heat and reduced efficiency.
Identifying the leakage involves inspecting the APH for visible signs of damage or leakage, conducting pressure tests, and monitoring performance parameters.
Common causes of APH leakage include worn-out seals, corros...read more
Q2. Desuperheting line identify and which location.
Desuperheating line is used to reduce the temperature of superheated steam by injecting water or other cooling agents.
Desuperheating line is typically located downstream of the superheater in a boiler system.
It is used to control the temperature of the steam to prevent damage to downstream equipment.
The location of the desuperheating line may vary depending on the specific boiler design and application.
Examples of desuperheating systems include spray water, steam injection, a...read more
Q3. There are eight types loss in Boiler
There are eight types of losses in a boiler.
The eight types of losses in a boiler are: radiation, convection, exhaust, blowdown, incomplete combustion, unburnt fuel, ash, and moisture.
Radiation loss occurs due to the heat radiated from the boiler's surface.
Convection loss occurs due to the heat carried away by the flue gases.
Exhaust loss occurs due to the heat carried away by the exhaust gases.
Blowdown loss occurs due to the removal of hot water and steam from the boiler.
Inco...read more
Q4. O2 analiger location in Boiler
The O2 analiger in a boiler is typically located in the flue gas stream.
The O2 analiger is used to measure the oxygen content in the flue gas.
It is important to monitor the oxygen levels in the flue gas to optimize combustion efficiency.
The O2 analiger is usually installed in the boiler's flue gas duct or stack.
It may be located at a specific distance from the boiler outlet to ensure accurate measurements.
The O2 analiger may have a probe that extends into the flue gas stream ...read more
Q5. Drum pressure which area drop
Drum pressure drops in the area of steam generation and distribution.
Drum pressure drop can occur due to steam leakage in the distribution system.
Pressure drop can also happen in the steam generation process, such as in the boiler or heat exchanger.
Other factors that can cause drum pressure drop include fouling or scaling in the system.
Monitoring and maintaining proper drum pressure is crucial for efficient and safe operation of the boiler system.
Q6. Types of losses in Boiler
Types of losses in Boiler
Heat loss through flue gases
Heat loss through radiation and convection
Incomplete combustion losses
Blowdown losses
Ash and unburnt losses
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