Pipeline coatings operating in salt flats have a tremendous responsibility to protect the pipe in a very aggressive environment. When the coating shows a weak spot and fails the carbon steel pipe will corrode until a repair is performed. However many repairs in salt flat regions have seen disbonding or other issues due to high salt concentration. The following paper is an overview of the development and testing of a composite repair system that has been designed to handle these harsh conditions. The results include a one-year field trial in a salt flat environment with no signs of degradation as well as a general summary of the issues seen in salt flat areas. Whether a serious repair is needed or just an aggressive re-coat is wanted it is vital to ensure that the repair lasts a long time.

Cathodic protection (CP) systems are often a vital component of integrity management programs for oil sands facilities. The electrical components of these systems must be designed and installed in accordance with regional electrical codes such as the Canadian Electrical Code (CEC) or the National Electrical Code (NEC). The CEC and NEC include limited direction on the electrical requirements for CP systems. This paper examines installations of typical CP components and suggests ways in which the CEC and NEC can be interpreted. It is demonstrated that interpretation of electrical requirements for CP systems can be difficult. To help improve compliance and understanding future revisions of these codes should provide additional guidance for the design and installation of CP systems.

Microorganisms are notorious for being involved in serious metal infrastructure damage popularly known as microbiologically influenced corrosion (MIC). Long term corrosion incubations (~2 years) with carbon steel (CS) beads were established using produced water collected from a Canadian oilfield where nitrate was routinely used for souring mitigation.Experiments were set up under methanogenic sulfate-reducing and nitrate-reducing conditions to stimulate electrical MIC (EMIC) with iron present as the sole electron donor.Microbial community analysis chemical measurements metal weight loss and surface analysis were conducted to assess EMIC under these different conditions. After 2 years incubations in the nitrate-reducing environment did not show surface damage to the carbon steel beads nor substantial weight loss (2-3%). However incubations in the sulfate-reducing environment showed 10-16% weight loss with severe pitting on the CS beads and community sequencing revealed the predominance of known acid producers (<em>Mesotoga</em>and<em>Acetobacterium</em>) and methanogens (<em>Methanosaeta</em>). Incubations in the methanogenic environment showed comparatively less weight loss (2-6%) though surface analysis revealed an abundance of pinhole-like pits; microbial communities were dominated by putative syntrophs (<em>Petrimonas</em>and<em>Pseudomonas</em>) and a known methanogen(<em>Methanosaeta</em>). In addition to the establishment of new EMIC enrichment cultures this study demonstrated that the localized effect of MIC cannot be accurately assessed solely using weight loss corrosion assays but additionally requires microscopic and surface studies along with an understanding of the microbial community composition.