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  • September 18, 2018

    Last week, we hosted CUI Test Results: Understanding the Corrosive Mechanism, a live webinar detailing the latest test results from the most recent long-term corrosion under insulation (CUI) testing. Our webinar covered the various types of corrosion, the science behind the thermodynamics of corrosion, and the latest findings from long-term corrosion research on Thermo-1200™ calcium silicate, and Sproule WR-1200® expanded perlite, and a silica aerogel blanket specimen.

  • September 18, 2018

    Galvanic corrosion (also called bimetallic corrosion) is a deteriorative electrochemical process that occurs when two dissimilar metals are in contact with each other in the presence of an electrolyte. This type of corrosion is characterized by the accelerated corrosion of one metal, while the other remains mostly unaffected. In other words, one metal becomes the anode and corrodes preferentially, thus sacrificing itself while protecting the other metal, the cathode.

  • September 18, 2018

    When it comes to corrosion under insulation (CUI), I tend to call it a "minefield," and for more than one reason. It’s not only a hidden phenomenon, but it's also one that can really come back to bite companies who don’t invest in a good CUI mitigation strategy, because sooner or later, those companies are going to get their names in the papers due to unwanted accidents, production loss and environmental damages. 

  • September 18, 2018

    Guided Wave Ultrasonic Testing (GUL), or Long Range Ultrasonic Testing (LRUT), is considered a viable screening approach for detecting CUI related problems in the oil and gas industry. Guided wave ultrasonic testing is a nondestructive inspection method in which low-frequency omnidirectional ultrasonic waves propagate along internal geometric boundaries, in order to detect corrosion. As the guided waves travel across the confined boundaries, the waves will then be reflected at areas with cross-sectional changes, identifying areas with corrosion.

  • August 8, 2018

    Last month, we published a blog titled Accelerated System Corrosion Testing with Calcium Silicate and Perlite Insulations.  The blog reviewed the developing NACE TG 516 protocol and results from the accelerated corrosion testing that Johns Manville completed on a pipe assembly insulated with our Thermo-1200™ and Sproule WR-1200® rigid insulation products. 

  • August 8, 2018

    Corrosion impacts our society on a daily basis. Automobiles, buildings, infrastructure, appliances and energy distribution systems are examples of some of the components negatively affected by this phenomena.

    Corrosion is defined as the deterioration of a material as a result of chemical reactions between it and the surrounding environment. Although corrosion affects a variety of materials including polymers and ceramics, the term is most often associated with the degradation of metals.

  • August 8, 2018

    Annually, the impacts of corroding materials cost the global economy over $1 trillion. Some alloys are exposed to extreme temperatures and stress, causing the formation of an oxide film, which in turn accelerates the breakdown of the alloys.

  • August 8, 2018

    We have all experienced corrosion in the form of rusting bridges, road salt corroding aluminum wheels and rusting our vehicles. These same corrosion processes occur in power distribution equipment, especially in offshore or near-shore locations, with the potential for causing catastrophic failures. Corrosion is a naturally occurring process that affects virtually all metals, though at different rates.

  • July 11, 2018

    Corrosion under insulation (CUI) is a concern that industrial owners, engineers, and contractors spend a great deal of time managing every day.  As a leader in the industrial insulation market, Johns Manville conducts corrosion-based testing to provide the industry with the information they need to make decisions.  Johns Manville conducts tests using industry-accepted laboratory-scale ASTM protocols, as well as tests under simulated “real-world” environmental and installation conditions.  One of these “real-world” accelerated tests is being finalized into a protocol by NACE Tas

  • July 11, 2018

    Corrosion is a major challenge and essential risk to contain for any oil and gas operator. Loss of containment can mean loss of process, loss of revenue, expensive repairs and – most importantly – a potentially major safety hazard. But while a breach in a cross-country pipeline can be a major incident and environmental risk, it’s another matter downstream. Different plant and processes are tightly packed together, with all manner of hydrocarbons and other combustible fluids boiling, cooling or flowing. Workers dart in-between, never more than a few dozen feet from a potential corrosion risk.