In every case there should be a supplier who guarantees for trouble-free operation. Fortunately, today the whole unit normally comes from one source and there should be no buck-passing game. Nevertheless, there are still quite a number of plants whose problems have not effectively been solved and who accordingly are hampered with restrictions of operation. Possibly the supplier was not willing or not able to ensure failure-free operation, maybe an inadequately formulated specification can play a role, too.
If the problem is of sufficient importance, the operating company can tender a rehabilitation project and thus profit from the experience of other players in the market. Possible sources are suppliers, or some specialized consulting companies or university departments. Experience shows there is always a chance for a seemingly exotic case that is perfectly new for all participants, for the engineers involved both a challenge and a lesson.
In every case the first phase of solution should be a root cause analysis. While this should go without saying, in real world the first step is often to recourse to ‘standard procedures’. Depending on the effort required and risk involved, this may well make sense, however, may not be successful.