Which practices are typical for mitigating corrosion on exposed ALRE components?

• A. Increase operating temperature and reduce lubrication.
• B. Remove coatings and expose metal.
• C. Use protective coatings; regular cleaning; seal replacements; hardware corrosion resistance.
• D. Replace components yearly regardless of corrosion.

Answer: (C)

Exposing ALRE components to harsh environments makes corrosion a major reliability concern, so the best mitigation combines a strong barrier, regular maintenance, and materials designed to resist corrosion. Protective coatings create a physical shield between metal surfaces and the surrounding moisture, salts, and pollutants. When these coatings are properly applied and maintained, they slow or stop the ingress of corrosive agents that start rust and pitting. Regular cleaning removes salt deposits, dirt, and other residues that can trap moisture and promote galvanic activity, so the metal surfaces stay in a stable, clean condition. Seal replacements keep joints and enclosures watertight, preventing moisture intrusion and humid environments that accelerate corrosion in crevices and interfaces. Using hardware that is corrosion resistant—such as coated fasteners or alloys specifically chosen for seawater exposure—reduces the likelihood of rust and electrochemical interactions that drive deterioration. Collectively, these practices address the environmental exposure, material interfaces, and protective barriers necessary to extend life and reliability of exposed ALRE components.

Other approaches fall short because they either increase the factors that drive corrosion (for example, higher temperatures with reduced lubrication can accelerate wear and corrosion), improperly remove protective barriers (stripping coatings exposes metal to hazards), or rely on costly, blanket replacements without addressing the ongoing causes or maintaining the protective systems.