Which of the following conditions is...

Which of the following conditions is...

Question 1 of 2707066636ef128f7522a1c521328

Which of the following conditions is indicated by oil flowing through a lube oil gravity tank overflow sight glass?

Question 1 of 27070

Q

Which of the following conditions is indicated by oil flowing through a lube oil gravity tank overflow sight glass?

🔍 Key Concepts

• Lube oil gravity tank purpose – why do we use a gravity tank in a turbine lube oil system? • Normal flow path – what should happen to oil level and overflow when the supply pump is delivering the correct amount of oil? • Difference between overflow due to excess level and lack of flow to the tank.

💭 Think About

• Think about what the overflow sight glass is there to show you during normal operation, not during a failure. • If the supply pump is delivering the correct quantity of oil to the gravity tank, what happens to the oil level and where does any extra oil go? • Would a bearing failure automatically cause visible overflow at the gravity tank, or would it more likely change pressure/temperature elsewhere in the system?

✅ Before You Answer

• Clarify the function of the overflow line on a gravity tank (safety vs indication of correct circulation). • Decide whether no flow or excess pump output would make oil appear at the overflow sight glass. • Ask: in a healthy system, should you normally see some oil movement in the overflow sight glass, or none at all?