I lead hydro operations by keeping the receiving capacity, downstream evidence and physical access behind a maintenance plan inside the operating commitment.
Civil works taught me that the boundary drawn around a task can be much smaller than the boundary of its consequences. A contractor might complete the measured excavation while the receiving arrangement remained unresolved. A component could be available in a store but unable to reach the place where operations needed it. I have spent much of my career learning to keep those connections in the management account, including an episode where I gave the work quantity more attention than the destination that made it possible.
A maintenance programme is incomplete when it names the work but leaves the physical and environmental conditions for doing it outside the decision.