Definition of Commissioning...
are there some people here who think you just flip the switch and VOILA! out come 5MM carats per year?
get real or get educated
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https://en.wikipedia.org/wiki/Project_commissioning
Project commissioning is the process of assuring that all systems and components of a building or industrial plant are designed, installed, tested, operated, and maintained according to the operational requirements of the owner or final client. A commissioning process may be applied not only to new projects but also to existing units and systems subject to expansion, renovation or revamping.[1][2]
In practice, the commissioning process comprises the integrated application of a set of engineering techniques and procedures to check, inspect and test every operational component of the project, from individual functions, such as instruments and equipment, up to complex amalgamations such as modules, subsystems and systems.