Rolling zones instead of whole-site attendances
The rotation works by treating the facility as a set of sections that can each be closed briefly without stopping the operation. One section is isolated, worked, and returned to service before the next is taken. Over a defined cycle the whole site is covered. The critical requirement is that the cycle is tracked, because otherwise the easy sections get attended repeatedly and the awkward ones are quietly skipped.
Tracking does not need to be elaborate. A simple register showing each section and the date it was last completed is enough, provided it is visible to both the site and the contractor. What it delivers is the ability to answer the question every operations manager eventually asks, which is when a particular area was last properly done. Without the register that question has no reliable answer.
