GMR Energy Field Engineer Interview Questions, Process, and Tips for Experienced

There are two main types of dosing in Boiler Drum: continuous dosing and intermittent dosing.

• Continuous dosing involves adding chemicals continuously to maintain a desired level of treatment in the boiler water.

• Intermittent dosing involves adding chemicals at specific intervals to prevent scale and corrosion buildup.

• Examples of chemicals used for dosing in Boiler Drum include oxygen scavengers, pH adjusters, and scale

Types of blow down include intermittent blow down and continuous blow down.

• Intermittent blow down involves manual opening of a valve to release boiler water periodically.

• Continuous blow down involves a continuous flow of water from the boiler to remove impurities.

• Blow down helps maintain boiler efficiency and prevent build-up of harmful substances.

• Examples of impurities removed during blow down include dissolved solids

To reduce foaming in a drum, the process involves adjusting temperature, using anti-foaming agents, controlling agitation, and ensuring proper filling levels.

• Adjust temperature to reduce foam formation

• Use anti-foaming agents to break down foam

• Control agitation to prevent excessive foam buildup

• Ensure proper filling levels to avoid overflow and foam creation