Commissioning Sequences are 1) critical utility systems (e.g., control systems (DCS, SIS, F&G, electrical, air system and water system, etc.) will be pre-commissioned and commissioned early and ready for service for the other facility commissioning activities, and then 2) non-critical utility systems (e.g., fuel, steam, demi water, etc.) will be placed into service as required to process facilities commissioning activities such as heater dry outs, proving hot oil circulation loop, amine loop proving, etc. These are completed prior to RFSU (Ready for Star-tup), and 3) the process systems are the last to be commissioned as they are typically commissioned, tightness tested and made ready for introducing hydrocarbon for the initial start-up.
Related Definitions in the Project: The Operation and Maintenance
