Question 51Steam Plants - 1st Asst/Chief

The correct answer is A) Steam drum. The steam drum is the part of the boiler where the steam and water mixture separates, with the steam rising to the top of the drum. This steam-water separation process results in a steam quality of around 90% in the steam drum, as the water content is reduced but not completely removed. The other options are incorrect because: B) Desuperheater outlet: The desuperheater reduces the temperature of the steam, but does not significantly affect the steam quality. C) Superheater outlet: The superheater increases the temperature of the steam, but does not affect the steam quality. D) Last pass of the superheater: The superheater is designed to increase the temperature of the steam, not the quality.