In monitoring an impressed current cathodic...

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Question 1 of 205eccef9cbacbc34ba4d45b4e

In monitoring an impressed current cathodic hull protection system, it is important to ensure that the propeller screw receives the same cathodic protection as the hull. What should be checked?

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5eccef9cbacbc34ba4d45b4e

In monitoring an impressed current cathodic hull protection system, it is important to ensure that the propeller screw receives the same cathodic protection as the hull. What should be checked?

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🔍 Key Concepts

• Impressed current cathodic protection (ICCP) systems and how current is carried to rotating machinery like the propeller shaft and screw • The role of shaft grounding/earthing devices (such as carbon brushes) in protecting the propeller • Why bronze or other non‑ferrous propellers may still require cathodic protection in a steel hull system

💭 Think About

• Think about how a rotating propeller shaft can be kept at the same electrical potential as the hull in an impressed current system. What physical component must make an electrical connection between the rotating shaft and the ship’s bonding/grounding system? • Ask yourself: if you wanted to confirm that the propeller is actually receiving protection, what measurable indication associated with that component would tell you current is flowing as intended? • Eliminate any choices that assume the propeller’s material alone is enough protection, or that you can only verify effectiveness when the ship is drydocked.

✅ Before You Answer

• Verify which option involves electrical continuity between the rotating shaft and the ship’s cathodic protection/bonding system. • Check which choice refers to a measurable current that would indicate the propeller is included in the protection circuit. • Rule out any answer that suggests no checks or only checks at drydock as routine monitoring for an impressed current system.

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Question 1 of 205eccef9cbacbc34ba4d45b4e

In monitoring an impressed current cathodic hull protection system, it is important to ensure that the propeller screw receives the same cathodic protection as the hull. What should be checked?

Back

Question 1 of 20

5eccef9cbacbc34ba4d45b4e

In monitoring an impressed current cathodic hull protection system, it is important to ensure that the propeller screw receives the same cathodic protection as the hull. What should be checked?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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