You are at a shipyard in dry-dock. New...

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Question 1 of 2066636eee28f7522a1c51f2f1

You are at a shipyard in dry-dock. New anodes for the impressed current system are being installed. The yard workers are installing the capastic layer on the hull. What is the primary function of the capastic epoxy?

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Question 1 of 20

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🔍 Key Concepts

• Impressed current cathodic protection (ICCP) systems and how they differ from sacrificial anodes • The purpose of an insulating / dielectric / capastic coating between active anodes and the steel hull • How electrical current would behave if an anode were in direct metallic contact with the hull

💭 Think About

• Think about what happens to the protective current if the anode is electrically connected straight to the steel hull with no special coating in between. • Ask yourself whether the capastic epoxy is mainly about mechanical protection, changing the distance from the hull, or controlling the path and spread of electrical current. • Consider which choice best describes both insulation from direct short-circuiting and shaping the current distribution over a larger area of hull steel.

✅ Before You Answer

• Verify which option talks about electrical insulation / preventing a short rather than physical impact protection. • Check which choice refers to current distribution over the hull, not just ‘range’ or spacing from the hull. • Eliminate any answers that only describe mechanical protection or do not mention the electrical behavior of the ICCP system.

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