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Houston, TX, United States

Islam M.,Corrpro Companies
NACE - International Corrosion Conference Series | Year: 2012

Special precautions are required for the application of marine and other coating systems on steel surfaces prepared by Ultra High Pressure Waterjetting (UHP-WJ) and having flash rust. Coating manufactures also stipulate strict guidelines and pre-conditions for the use and guarantee of their systems if these are to be applied on UHP-WJ surfaces. This paper presents the results of testing of some high performance marine coatings that were applied on steel panels prepared by UHP-WJ, and exposed to natural seawater over a 12-month period. Results of cathodic disbondment tests on the same coatings are also reported. Coating application, testing and performance assessment were carried out using standard protocols. On the basis of the present data it appears that solvent free moisture tolerant epoxy systems can perform equally well or better on UHP-WJ surfaces with a light to moderate flash rust compared to Abrasive Grit Blasted (AB) surfaces, provided no Cathodic Protection is applied.

Kroon D.H.,Corrpro Companies
Materials Performance | Year: 2014

Pipelines are often located on alternating current (AC) overhead transmission line rights-of-way. Under these circumstances, the likelihood of AC interference and AC corrosion must be evaluated. AC interference can cause elevated step and touch voltages that create unsafe conditions for the pipeline operator and the public. Pipeline construction near AC transmission lines requires additional safety measures. Part 1 of this article covers safety considerations and Part 2 (in the October 2014 issue of MP) will present an example of a pipeline project that illustrates advances in predictive modeling and the design of AC interference mitigation and monitoring.

Islam M.,Corrpro Companies
NACE - International Corrosion Conference Series | Year: 2011

Ballast tanks on ships are used in various modes - completely filled with seawater, partially filled, or sometimes completely empty. It is the normal practice to coat the interior of the tanks with a suitable coating and also apply cathodic protection (CP). During service, the interiors of the ballast tanks are exposed to complete immersion in seawater when they are full. When half full, the top half of the tank interior is exposed to moist, salt-laden air while the bottom half is completely immersed. When completely empty, the tank interior only has moist salt-laden air. A project was undertaken to study the performance of some marine coatings under simulated ballast tank conditions by utilizing a large (2000-gallon) mock-up ballast tank. The impact of the type of surface preparation, in particular abrasive blasting (AB) and ultra high pressure waterjetting (UHP-WJ), on coating performance was investigated and the results are reported in the paper. © 2011 by NACE International.

Lindemuth D.,Corrpro Companies
Proceedings of the American Gas Association, Operating Section | Year: 2013

Pipeline monitoring technologies including coupons, corrosion rate probes, dataloggers, and remote monitoring are an essential part of the arsenal to combat stray current interference. Because too much CP can accelerate corrosion influenced by AC, CP levels must be optimized - corrosion rate probes help in this regard. A presentation covers stray current and stray current control; a case study of a transit system, the MARTA subway in Atlanta, GA; and a case involving a 20-mi long high pressure natural gas pipeline, 3 mi from transit system at closest point. This is an abstract of a paper presented at the 2013 AGA Operations Conference (Orlando, FL 5/21-24/2013).

Olabisi O.,Corrpro Companies
NACE - International Corrosion Conference Series | Year: 2012

Corrosion/erosion management for an operation is the systematic application of policies, practices, and resources to control corrosion/erosion and provide reliable safeguards against unexpected failures and leaks that can jeopardize mechanical integrity, operation, health, safety and environment (HSE). This paper highlights the use of a single key performance indicator in tracking monitoring strategy, mitigation strategy, and pipeline integrity for aboveground pipelines in the North Slope. The approach enables the integration of corrosion/erosion control, process monitoring, inspection, mitigation, environmental control, and materials management into a comprehensive management strategy. In this instance, external corrosion and stress corrosion cracking are effectively controlled; consequently, internal corrosion becomes the sole time-dependent failure type. Internal corrosion rate, like any KPI, enables the organization to operate with greater efficiency, reliability and control. The approach underscores a strategy that ensures that the facility remains fit for purpose during its design life. It satisfies the need to proactively control corrosion from growing to a size that could affect the structural integrity of components so that the facility remains sound and capable of safely performing the tasks for which it was designed and is compliant with the applicable regulations and standards governing design, operation, and maintenance. ©2012 by NACE International.

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