corrosioncontrol

Corrosion control is the set of methods used to limit metal deterioration caused by chemical or electrochemical reactions with the environment. Its aims are to extend asset life, ensure safety, and reduce maintenance costs by preventing failures and leaks.

It applies to a wide range of industries, including energy, water treatment, transportation, and construction. Common targets include pipelines, storage tanks, bridges, ships, and process equipment. Corrosion mechanisms vary with environment and material and include oxidation, pitting, galvanic corrosion, and hydrogen embrittlement.

Strategies are chosen based on material, environment, and cost, and may be used alone or in combination. They include material selection and design to minimize susceptibility; protective coatings and linings; cathodic protection (galvanic and impressed current); corrosion inhibitors added to fluids; environmental controls such as humidity and temperature management; and proper cleaning, drainage, and maintenance to reduce stagnant water and deposits.

Monitoring and maintenance are essential. Common practices include periodic inspections, coupons and weight-loss measurements, ultrasonic thickness testing, electrical resistance probes, and corrosion monitoring programs. Data-driven maintenance and risk-based inspection are often used to prioritize actions.

Industry standards and organizations such as NACE, ISO, and ASTM guide corrosion control practices. While no single solution fits all cases, effective corrosion control relies on integrating multiple methods throughout design, operation, and maintenance, tailored to the specific asset and environment.