What is meant by pre-commissioning?

Pre-commissioning is the series of processes carried out on the pipeline before the final product is introduced. The process during which the pipeline is made "live" i.e. the product is put in the pipeline, is called pipeline commissioning or start-up.

What does electrical commissioning mean?

In the ANSI/International Electrical Testing Association — Standard for Electrical Commissioning Specifications for Electrical Power Equipment and Systems (NETA ECS-2015), electrical commissioning is defined as the systematic process of verifying, documenting, and placing into service newly installed or retrofitted ...