🔍 Key Concepts

• Turbogenerator lube oil system design in an automated (unattended) plant • How main lube oil pumps are driven and when they can build pressure • The role of starting/priming or auxiliary pumps before the turbine is turning

💭 Think About

• Before the shaft is turning, what drives the main lube oil pump, and can it supply pressure at zero or very low speed? • In an automated plant, what must happen to bearing lubrication before you admit steam and begin to roll the turbine? • Which option sounds like a dedicated source specifically intended to build oil pressure for start-up and emergencies, rather than for normal running only?

✅ Before You Answer

• Verify which pump can operate independently of shaft rotation so it can supply oil before the unit turns • Check which source is commonly used for pre-lubing and emergency lubrication on turbine sets in automated plants • Confirm that the chosen option could reliably provide adequate pressure and flow at start-up, not just during normal operation