Question 115Steam Plants - Assistant Engineer

The correct answer is D) sounding the tanks frequently and reducing the transfer rate as the level approaches maximum fill. When transferring fuel oil to settling tanks, it is crucial to monitor the tank levels closely and adjust the transfer rate accordingly. Sounding the tanks frequently allows you to closely track the fill level and avoid overfilling the tanks, which could lead to a spill. As the tank approaches the maximum fill level, the transfer rate should be reduced to prevent an accidental overflow. The other options are incorrect because: A) plugging tank vents is not necessary and could create dangerous pressure buildup, B) maintaining a high transfer rate until trickle is observed is unsafe and risks spills, and C) having dispersant available is good practice but does not directly address the tank filling process.