How do I get better at plant-wide system integration?

You handle most systems well now. What defeats you is the plant-wide view, where every part must work together and a change in one place ripples somewhere else. That leap feels different because it is different. Running one system is a skill; seeing how all of them fit into a working whole is a bigger one, and you are just now reaching for it.\nThe thing to understand is that no one holds the entire plant in their head at once. Even the people who design these systems work from a picture, a map of how the pieces connect and depend on each other. What feels like a weakness in you is really just a missing map. Once you can see the connections laid out, the whole stops being a fog and becomes something you can reason about part by part.\nSo build that picture deliberately. Start sketching how the systems you know actually connect, what feeds what, what breaks if this stops. Ask the senior people to walk you through the plant-wide design and why it was built that way. Each connection you understand adds to your map, and the map is the skill. The whole plant will stop overwhelming you the moment you can see it instead of just feeling its size. You are closer than it seems.