Commissioning refers to all activities that are required in order to bring a fully assembled plant into operational condition. These activities specifically include checking
(functional testing) and setting (adjustment) of plant components and systems as well as checking and optimisation of the overall plant in the intended technological sequence.
We differentiate this from the start-up. The latter generally refers to the first use of a component or system or to the first operation of a complex plant, e.g. at the start of
test operation or after handover of the plant.