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  • 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.

  • July 11, 2018

    The nuclear, renewable-energy and construction sectors also spend a fortune monitoring corrosion that is hidden under insulation.

    For the offshore sector, corrosion under insulation (CUI) on pipelines and other infrastructure is estimated to cost about £3.5 billion a year.

    Current practice relies on periodic removal of insulation in selected areas to check visually for problems – but that could be about to change.

  • July 11, 2018

    As we discussed in our previous article, corrosion under insulation (CUI) is one of the most difficult corrosion processes to prevent. The reason for that is, by and large, no matter the precautions taken, water invariably seeps into the insulation and begins its dirty work—sometimes unseen until process leakage occurs. Data shows that about 60% of pipe leaks are caused by CUI. That’s not good.

  • June 14, 2018

    In 2017 and 2018, Johns Manville built upon the long-term, third-party corrosion testing we started in 2016, and the new results are in. The research sought to explore how corrosion under insulation (CUI) impacts a completely insulated pipe system (pipe, insulation, and jacketing) under conditions designed to accelerate corrosion. The test program started in 2016 with two hydrophobic high-temperature blanket insulations (InsulThin™ HT microporous blanket and a silica aerogel blanket) and in 2017 was expanded to include testing on calcium silicate and expanded perlite insulation.

  • June 14, 2018

    It is often necessary to predict the performance of a specific material in a particular environment to determine the inherent corrosivity of the system. Such tests are often substantially different from those used for corrosion inhibitor qualification, particularly in the case of the corrosion testing of corrosion resistant alloys. Predicting corrosivity is especially important when designing subsea equipment, most of which is extremely challenging to repair or replace once it is installed.