Plant Operation Practice Test

What is the term for water added to the boiler to compensate for leaks and blowdowns?

1. Feedwater

2. Replacement water

3. Make up water

4. Cooling water

The correct answer is: Make up water

The term for water added to the boiler to compensate for leaks and blowdowns is known as make-up water. This water is essential to maintain the proper water level and concentration of chemicals within the boiler system. When water is lost due to evaporation, leaks, or blowdowns—activities that are necessary to remove sediment and impurities—make-up water is introduced to replace this loss and ensure continuous operation without compromising the efficiency and safety of the boiler. Make-up water helps to dilute any concentration of dissolved solids that may increase as water evaporates or is removed from the system, thus preventing issues related to scaling or corrosion in the boiler. It's crucial for maintaining the integrity of the water-steam cycle within the boiler operations. Feedwater and replacement water can often be used interchangeably with make-up water in casual conversation, but in technical terms, make-up water particularly emphasizes its role in compensating for water loss specifically. Cooling water refers to water used to absorb and carry away heat from the system, which serves a different purpose entirely.