Pre-commissioning is the testing of non-energized systems.

Commissioning is the testing of energized systems.

Pre-commissioning and commissioning are words used in the engineering field. Pre-commissioning begins many months before the start of the project. During this phase duties are assigned.

Commissioning can be of any machinery, unit, or plant. So the commissioning of a power plant or steel plant is somewhat similar.

Commissioning denotes the trials of the component individually, machines, and it's part individually and as a whole and later on, all combined together( commissioning of the unit). After the commissioning of each unit, the plant as a whole is commissioned.

can anyone furnish me the method statement for commissioning of FM200 Systems

commissioning mean adjustment, testing, and tuning.