I would just use industrial=oil or maybe industrial=oil_storage as the main tag.

I always use an area for larger industrial facilities like this because it contains more information.

It might also make sense to only leave the address on the node, and move the other tags to the area. (And connect both using a type=site relation.) Then you'd have both the area of the tank farm captured and the point where routers should point at best. But that's just an idea.

Greetings