Question 78Steam Plants - QMED

The correct answer is D. The item labeled "L" in the illustration SG-0011 represents the means by which water treatment chemicals are introduced into the steam drum. This is because the steam drum is where water treatment chemicals are typically injected to maintain proper water chemistry and prevent scale buildup, corrosion, and other issues in the boiler system. The other options (B, E, and J) do not represent the chemical injection point, as they likely serve other functions such as water level indication, steam outlet, or other components of the steam drum assembly.