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Interpretation of Electrical Codes for Cathodic Protection Installations

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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.

Product Number: 51319-13187-SG
Author: Matt Viveiros
Publication Date: 2019
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Underground AC Power Transmission Line Feasibility Study

Product Number: 51319-13034-SG
Author: Matthew Lechelt
Publication Date: 2019
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Alternating Current (AC) interference affects pipelines collocated near high voltage transmission lines. While overhead high voltage AC transmission line collocations are common underground high voltage AC transmission line collocations while less common can cause similar interference effects on pipelines. This paper describes a feasibility evaluation of a proposedunderground transmission line route in the United Kingdom affecting a nearby pipeline. The proposed transmission line was to consist of either three 220 kV circuits or six 132 kV circuits; both cases were evaluated. The proposed transmission line phase cables were to be installed with concentric sheath conductors direct buried in a close trefoil configuration and bonded to underground splice boxes at various locations. In addition to the proposed transmission line route the project evaluated a set of base cases: a typical pipeline paralleling at varying offsets for various lengths under a variety of operating conditions and a typical pipeline crossing scenario. The effect of soil resistivity on the interference levels experienced by the pipeline was considered. The feasibility study assessed the expected steady state fault state and AC corrosion effects that the proposed transmission line could have on any nearby pipelines. Results for all cases and scenarios will be discussed.Key words: AC interference case study underground AC power transmission pipeline integrity
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03202 The use of Dedicated Simulation Software for the Design and Understanding of the Cathodic Protection of Underground Pipeline Networks under various Interference Conditions

Product Number: 51300-03202-SG
ISBN: 03202 2003 CP
Author: Leslie Bortels
Publication Date: 2006
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A simulation software for the cathodic protection (CP) of underground pipeline networks is presented.  In this paper, the software will be applied to two different cases. The first concerns the design of the cathodic protection of a 55 km pipeline section. The second is the evaluation of an existing pipeline network in the north-west of The Netherlands.
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03701 ELECTRICAL GROUNDING CASE HISTORIES

Product Number: 51300-03701-SG
ISBN: 03701 2003 CP
Author: Earl L. Kirkpatrick
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