Question 23Steam Plants - QMED

The correct answer is C) Sounding the settling tank more often as the level rises and stopping the transfer before completely filling the tank. This is the best protection against an oil spill when transferring fuel because it allows the operator to closely monitor the settling tank level and stop the transfer before the tank becomes overfilled. Sounding the tank more frequently as the level rises enables the operator to react quickly and stop the transfer in a timely manner, preventing an overflow and potential spill. The other options are less effective - option A relies on a high-level alarm which may not be entirely reliable, option B uses an estimated time rather than direct monitoring, and option D of completely filling the tank has the highest risk of an oil spill.