Since flexible risers usually have both polymer and metallic layers, monitoring the corrosion of the metal components is essential as well.

• Corrosion Coupons: These are small metal pieces attached to the riser to monitor the rate of corrosion over time.
• Galvanic Corrosion Monitoring: Monitoring the galvanic potential between the polymer and the metal layers can provide insights into corrosion effects, especially in underwater environments.