While taking a round in the engine room of...

Question 1 / 2066636eef28f7522a1c52035c

Question 1 of 2066636eef28f7522a1c52035c

While taking a round in the engine room of your harbor tug, when is the best time to check the cylinder jacket water expansion tank level on a heat exchanger-cooled diesel generator with a pressurized cooling system where no sight glass or float indicator is provided?

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🔍 Key Concepts

• Pressurized cooling systems and why opening caps when hot can be dangerous • How coolant expands and contracts with temperature changes • The difference between running, just-shut-down, and cooled-down engine conditions

💭 Think About

• Think about what happens to coolant volume and pressure as the engine goes from cold, to operating temperature, to shut down, to cooled back off. • Ask yourself at which point the system pressure is lowest and the coolant level is most stable and representative of the true quantity. • Consider safety: when would removing a pressure cap most likely avoid scalding and give a reliable reading of the tank level?

✅ Before You Answer

• Verify which condition gives minimum pressure and temperature in the cooling system. • Check which option allows the coolant to fully expand or contract so the level you see is accurate, not artificially high or low. • Make sure the chosen time to open the cap would not risk injury from hot, pressurized coolant.

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Question 1 of 20

It is best to check the level by removing the pressure cap when the engine is running with no load for several minutes.

It is best to check the level by removing the pressure cap immediately after the engine has been shut down.

It is best to check the level by removing the pressure cap when the engine is running under load and at operating temperature.

It is best to check the level by removing the pressure cap after the engine has been shut down and has had a chance to cool down.

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Question 1 / 2066636eef28f7522a1c52035c

Question 1 of 2066636eef28f7522a1c52035c

Back

Question 1 of 20

66636eef28f7522a1c52035c

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

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