INSTITUTE OF CORROSION’s Post

Cathodic protection works by creating a protective electrical field around the metal surface, which prevents corrosion from occurring. How can it can benefit your applications?#ProtectiveField #CorrosionPrevention #ICorrExpertise https://lnkd.in/gyQN25G

Cathodic protection is a powerful corrosion prevention technique that can save time, money, and resources. Shouldn't you learn how to implement cathodic protection in your applications? #CorrosionPrevention #ResourceEfficiency #ICorrMembership https://lnkd.in/gyQN25G

Exploring Galvanic Anode and Impressed Current Cathodic Protection Corrosion is a major challenge in maintaining the integrity of infrastructure in aggressive environments. Cathodic protection is a proven method to combat this issue, utilizing either galvanic anode or impressed current systems. Galvanic Anode Cathodic Protection (GACP) In GACP, sacrificial anodes made of zinc, aluminum, or magnesium are used. These anodes corrode in place of the steel, providing the necessary protection. This method is simple, reliable, and widely used in offshore structures and short pipelines. Impressed Current Cathodic Protection (ICCP) ICCP involves the use of a DC power source to drive the protection current. Anodes in ICCP systems are typically made from materials like mixed metal oxides coated on titanium. This system is ideal for large structures and long pipelines due to its ability to deliver higher currents. Choosing the appropriate cathodic protection method depends on various factors, including cost, environmental conditions, and the specific requirements of the structure. Both GACP and ICCP have their unique advantages and applications. The Institute of Corrosion provides specialized training to ensure professionals are equipped with the knowledge and skills to design and maintain effective cathodic protection systems. Proper implementation of these systems can greatly extend the life of critical infrastructure, ensuring safety and reducing maintenance costs. #CorrosionControl #CathodicProtection #Infrastructure https://lnkd.in/gyQN25G

CATHODIC OVERPROTECTION Overprotection by use of cathodic protection can be a disaster for the applied paint/coating system. See the figure. From about -1100mV, (measured against a Copper/Copper sulphate, Cu/CuS04 cell), the painted Cathode (steel) will develop H2 Hydrogen gas and OH- alkaline. The gas will make blisters in the coating, which will later strip off the coating from the steel surface. This is also called Cathodic disbonding. The steel will however be overprotected and no corrosion will take place, due to the OH- alkaline. Overprotection can often be seen either very close to an Zn or Al anode or when use of wrong adjusted Impressed Current Systems. By use of Impressed Current System, a thick coating of epoxy or polyester are normally used around the anodes to protect the coating system from flaking. This method can also be to some help. Some years ago, a Shipyard had to clean some round gas tanks internal, in a new building, before delivering. The steel surfaces had got a thin layer of corrosion products. Instead of building expencive scaffoldings in the round tanks, I told them to fill the tanks with seawater, salt content ca 2,5%, and use Mg (Magnesium) anodes (stripping anodes) in the tanks. Because they give very negative Voltage, -1300mV, the Mg anodes will produce an overprotection. The steel bar inside the Mg anode was welded to the steel tank, to ensure a proper grounding. The tank surfaces were sufficient cleaned after the seawater was pumped out. The operation took some days. The steel surface was overprotected during the operation and was not harmed. The ship owner used the tanks for gas cargo, as they become, after steaming. The method can also be used for cleaning corroded water ballast tanks (e.g. fore- or after peaks), where blast-cleaning can be difficult to access. NB NB!! This method can be very dangerous, because of the H2 Hydrogen gas development, which can easy take fire and make an explosion. Therefore, sufficient ventilation is absolute necessary and no open flames, sparks or people shall be close to the fan outlet or the tank openings. If this method shall be used, it must be in close co-operation with the Mg-anode producer or local representative.

Mitigating Corrosion: Utilizing MCI® in High-Temperature GCC Regions #Cortec’s #MCI®Technology #MitigatingCorrosion

* Mitigating Corrosion Under Insulation and Supporting the Longevity of Industrial Pipe Insulating Systems: https://lnkd.in/dgawADB6

Dear connections, Good day! Let us know about The Causes of Storage Tank Failures: #Corrosion: Exposure to corrosive materials or environmental factors can lead to tank degradation. Material Fatigue: Continuous stress, temperature changes, or inadequate material quality can cause structural fatigue. Improper Maintenance: Lack of regular inspections, cleaning, or maintenance can exacerbate tank issues. Design Flaws: Poor design choices, such as weak joints or inadequate materials, can cause structural weaknesses. External Factors: Natural disasters like earthquakes, floods, or accidents like vehicle collisions can damage tanks. Methods to Rectify Tank Failures: Corrosion Mitigation: Regular inspections and coating tanks with corrosion-resistant materials can prevent corrosion-related failures. Utilizing cathodic protection methods or using corrosion-resistant alloys can also help. Material Testing and Upgrades: Assessing the quality and integrity of tank materials regularly can help in identifying weaknesses. Upgrading materials or reinforcing weak areas can prevent failures. Routine Maintenance: Implement a comprehensive maintenance schedule including inspections, cleaning, and repairs. Replace worn-out parts or components promptly. Redesign and Retrofitting: Address design flaws by redesigning vulnerable areas or retrofitting tanks with reinforcements to improve structural integrity. Emergency Response Planning: Develop and implement emergency response plans to mitigate damage caused by external factors like accidents or natural disasters. Monitoring Systems: Install monitoring systems for early detection of potential issues such as leaks, pressure changes, or temperature fluctuations. Compliance with Standards: Ensure that the tank meets industry standards and regulations, including proper installation and adherence to safety protocols. Professional Expertise: Consult with engineers or professionals experienced in tank design and maintenance for thorough assessments and effective solutions. #api653 #storagetank #stroragetankinspection #api571 #damageprevention #tanks #api650 #inspectionservices #oilandgas

Corrosion is the natural enemy of steel pipes, threatening their structural integrity, lifespan, and overall performance. As the backbone of many industries, from oil and gas to water distribution, ensuring the longevity of steel pipes is paramount. Anti-corrosive coatings and linings are a formidable solution that safeguards steel pipes against the relentless forces of corrosion. In this article, we’ll dive into the world of anti-corrosive coatings and linings, exploring their importance, types, application methods, and benefits https://lnkd.in/dxZeG4aD

Design phase is one of the basic and most important stage used to fabricate and install specific pipelines, Some pipelines may be installed above ground from original design basis with out any additional protection like protective coating or other suitable protection means, Although the environments surrounding may have remote nature like deserts or other soil areas showing groundwater levels rise in some months of the year.  After some periods had been elapsed, pipelines may become partially or fully covered by sand due to sand movement in desert environments and in case of heavy rains, water flooding made soil around pipeline wet which could strongly initiate corrosion cell if unfortunately meet the undesirable contaminates mixed with sand (i.e. sand+clay or sand +gypsum) where sand its self is non corrosive. For areas showing ground water raise, in such case the pipeline may fully or partially immersed based on the quantity and level of water. in both cases external protection against external corrosion threats by applying suitable protective measures as coating and/or wrapping will promote pipeline operating life cycle and corrosion mitigation strategy. RBI for all installed pipeline should be revised once any parameter of design is significantly changed like pressure, temperature, fluid chemistry, service type and conditions like our subject change pipeline from above ground to partially/fully buried condition which should be taken in consideration. some damage mechanisms should be created and considered and not limited to soil corrosion, MIC and atmospheric corrosion. #pipelines #design #corrosion #RBI

Different methods of corrosion protections and control. #corrosion #corrosionprotection #corrosioncontrol