🔍 Key Concepts

• Condensation forms when warm equipment is exposed to cooler surrounding air, especially in large, enclosed spaces like main reduction gear casings. • The role of lube oil circulation in equalizing temperatures and carrying moisture away. • The function of a lube oil purifier and how water is removed from the oil system.

💭 Think About

• Which procedure(s) directly help warm up or stabilize the gear casing and oil to match ambient temperature, thereby reducing the chance of moisture condensing on internal surfaces? • How does removing water from the oil system affect the risk of condensation or internal rust in the reduction gear? • Does continued cooling (with a lube oil cooler) help prevent condensation, or might it actually increase the temperature difference between metal surfaces and surrounding air?

✅ Before You Answer

• Check which options specifically reduce temperature differences between the gear casing, oil, and ambient air. • Verify which step(s) directly remove water already present in the oil, not just prevent new condensation. • Consider whether any option might promote condensation by over‑cooling the system instead of letting it reach ambient temperature.