Question 191Steam Plants - 1st Asst/Chief

The correct answer is A) sounding the tanks frequently and reducing the transfer rate while topping off. When transferring fuel oil between double bottom tanks, it is important to frequently sound or measure the tank levels to ensure the receiving tank does not get overfilled. Reducing the transfer rate when nearing the tank's capacity allows the operator to precisely control the final fill level and avoid any accidental overflow. This aligns with standard safety practices and regulations to prevent oil spills during fuel transfers. The other options are incorrect because: B) maintaining dispersant is not a primary precaution for the transfer itself, C) maintaining a high rate until overflow is observed is unsafe and risks spills, and D) plugging vents could create dangerous pressure buildup in the tanks.