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Advanced technology high performance tank linings are often applied by plural spray equipment and occasionally one of the components could be off ratio. Worse still, some well-intentioned field personnel might add more curing agent to speed up the cure, or alter other properties, or may not utilize the entire curing agent portion in a single leg application. This paper investigates the effects of under-cure or over-cure on the performance of two high temperature tank linings by deliberately mis-mixing the two components.
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Harvesting ocean energy will play an important role in supplying fossil-free energy for future generations. The oceanic environments around the world are unfortunately of the toughest possible to operate in. Most technologies use a power take-off (PTO) unit with mechanisms that are placed inside protective enclosures or sealed buoys to protect from the harsh environment in seawater. This gives a barrier from the corrosive electrolyte and biological activity that can deteriorate the components. The energy from the oceans in form of relative movements and forces are transferred to the PTOs with help from complex dynamic sealing systems.
In this paper, failure analysis methodology will be applied to the principal mechanisms by which FBE coatings fail during long term service; with specific application to case studies involving blistering. The case studies apply standard failure analysis techniques to determine the primary causes and modes of failures.
Stainless steel is selected for use in the municipal waterworks industry because of its inherent corrosion resistance properties. Designers oftentimes overlook the associated problems with coupling stainless steel with carbon steel metals. When these materials are electrically connected and placed into aqueous environments (immersion service) accelerated corrosion of the anodic carbon steel metal is initiated.
Galvanic primers have been found to be effective at reducing crack formation aluminum alloys. This paper will review primers that Luna has developed and explore a variety of commercially available ones.
Global Environmental Regulations have driven many coatings developments over the last decades. Today´s regulations around worker safety and environment protection are seen as important drivers in new product development. More recently such regulations are spreading widely, as people want to live on a planet where everyone can enjoy a better quality of life, breathe clean air, where rivers and oceans are preserved, and the impact of humans on wildlife is reduced.
VOC was one of the paint emissions accused to be an environmental hazardous material and among the main causes for SBS (Sick Building Syndrome). The term SBS was coined in the late 1970's to describe situations where building occupants experienced acute health problems. “According to WHO (World Health Organization), 4.3 million people a year die from the exposure to in-house air pollution”
The aim of this work is to identify an approach to materials selection and corrosion control that can address the specific requirements of a Carbon Capture and Storage (CCS) project. This work is largely based on the accumulated knowledge and expertise that has been published. Besides the direct guidance from this document, specific topics may require more detail that can be found in the references.
As oilfield technologies have advanced, they have made high temperature (HT) reservoirs more accessible. HTs make the application of chemical more difficult because chemical instability at HT restricts what intermediates will work in these environments and the safety and complexity of HT testing further adds to the challenge.
Erosion is a major threat to liquid hydrocarbon transmission pipeline integrity when high liquid flow ratesare combined with the presence of solid particles. However, there is currently no generally acceptedguidance document or standard by which liquid petroleum pipeline operators can define maximum allowable velocities to manage the threat of erosion in their pipelines.
Typical austenitic stainless steels like 316L (S31603) contain chromium, nickel, and, optionally, molybdenum as major alloying elements. These are required to provide their beneficial properties, which include e.g. very high corrosion resistance and high ductility and toughness, yet showing comparably low strength and hardness. General corrosion resistance is primarily achieved by the element chromium, which causes formation of a thin but dense chromium oxide layer on the surface, when the amount of chromium dissolved in the metallic matrix is larger than approximately 10.5 wt%.
Olin Epoxy has designed a unique low VOC and high solids epoxy system which offers superior performance in tank liner application. The formulation of these novel materials in high temperature and high chemical resistant ambient cure tank liner will be described.