When one drum is filling from the LPR in a pumper drum system, what is the operational function of the opposite drum?

In a pumper drum system, when one drum is actively filling from the Low Pressure Regulator (LPR), the opposite drum typically engages in transferring its liquid into the recirculation header. This operational function is crucial for maintaining a continuous flow and balance within the system, ensuring that the liquid does not stagnate and that both drums work efficiently.

By transferring its contents, the opposite drum aids in preventing overfilling while also providing a path for liquid to return to the system, which contributes to the overall stability and performance of the operation. This helps maintain optimal conditions for the system, allowing it to function smoothly without interruptions. While other options suggest some form of inactivity or waiting for responses, the focus on active liquid management through transfer highlights a key operational aspect of effective drum management in the system.