What are the conditions that need to be manually verified before starting a centrifugal compressor driven by a back-pressure turbine?

The compressor inlet guide vanes are in the minimum position, the backflow valve is fully open, the outlet valve is closed, and the inlet valve is open.

Adding a note for the friend upstairs: 1. The pressure in the lubricating oil system is normal. 2. The oil temperature in the lubricating oil system is normal. 3. The production in the upstream processes is proceeding normally. 4. The downstream processes are ready to receive the rich gas.

One more thing: Pre-startup preparations – after installation or maintenance is completed, each item should be checked and approved. The machine room is kept clean, and it is equipped with proper lighting as well as fire-fighting equipment. Pipes and equipment are installed correctly, and pressure gauges, thermometers, etc. have been installed. Contact the relevant units to supply water, nitrogen, steam, and air to the unit; when introducing steam, ensure proper condensate drainage. Contact the instrumentation team to ensure that all measuring devices are in a sensitive and functional state. Ensure that all electrical equipment is in a sensitive and functional state through electrical calibration. Preparation and commissioning of the sealing system; Preparation and commissioning of the lubricating oil system; Preparation and commissioning of the process system; Static sealing test; Preparation and commissioning of the steam system