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Case Study: Integrated External Corrosion Management for A 12-Inch Crude Oil Pipeline

Picture for Case Study: Integrated External Corrosion Management for A 12-Inch Crude Oil Pipeline
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The Enbridge External Corrosion Prevention team (ECP) is developing an Integrated External Corrosion Management (IECM) process by which management of external corrosion control systems can be optimized while
maintaining asset integrity and safety. IECM is intended to provide a methodology by which operators can move from a traditional reactive approach to a state-of-the-art proactive strategy commensurate with industry expertise and technology. Here we discuss a case study intended to demonstrate and assess the outcomes of IECM. The subject is a 12-inch diameter crude oil pipeline located in North America. Results of the process reveal opportunities for improvement and efficiencies in operation and maintenance (O&M).

Product Number: 51323-18970-SG
Author: Keith Parker, Trey Johnston, Christophe Baeté, Michael Snow
Publication Date: 2023
$0.00
$20.00
$20.00

Recent years have seen advances in controlling external corrosion for buried pipelines. Specialized equipment and
methods for assessing cathodic protection effectiveness and AC corrosion threats, state-of-the art corrosion
sensing equipment, remote monitoring dataloggers, and advanced modeling techniques offer operators
technologically advanced means and methods for managing external corrosion risks. While proof of compliance
continues to rely on long-established field tests and monitoring cycles, there are opportunities to improve external
corrosion management programs to incorporate advanced technologies and methods. This paper presents a case
study demonstrating the Enbridge Integrated External Corrosion Management (IECM) methodology for a 12-inch,
85-mile-long crude oil pipeline located in North America. Pipeline construction, external corrosion history,
modeling, field validation assessment, and resulting IECM protocols are presented and discussed.

Recent years have seen advances in controlling external corrosion for buried pipelines. Specialized equipment and
methods for assessing cathodic protection effectiveness and AC corrosion threats, state-of-the art corrosion
sensing equipment, remote monitoring dataloggers, and advanced modeling techniques offer operators
technologically advanced means and methods for managing external corrosion risks. While proof of compliance
continues to rely on long-established field tests and monitoring cycles, there are opportunities to improve external
corrosion management programs to incorporate advanced technologies and methods. This paper presents a case
study demonstrating the Enbridge Integrated External Corrosion Management (IECM) methodology for a 12-inch,
85-mile-long crude oil pipeline located in North America. Pipeline construction, external corrosion history,
modeling, field validation assessment, and resulting IECM protocols are presented and discussed.

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Product Number: 51323-19393-SG
Author: Thomas Hayden, Joseph Mazzella, Keith Parker, Christophe Baete
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Managing external corrosion, especially for underground assets, is a significant challenge dating back to the first underground pipeline in 1865. The very first issue of the journal, CORROSION, featured a headline story on this subject. This subject is fundamental for corrosion engineers and pipeline operators.
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Validating Digital Twin Model of a Complex Pipeline System

Product Number: 51323-18958-SG
Author: Keith Parker, Christophe Baete, Trey Johnston
Publication Date: 2023
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Historically the corrosion condition and cathodic protection (CP) effectiveness of pipeline networks have been monitored by over-the-line surveys. Pipe-to-soil potentials and rectifier outputs are the major parameters measured, and for some pipelines a more intensive close interval survey is executed. Today test stations and more frequently rectifiers are equipped with remote monitoring devices which is shifting the industry towards the world of digitization. Unfortunately, external corrosion is still not fully under control.
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50 mV As a Screening Criteria for Shorted Casings – Case Study

Product Number: 51323-18899-SG
Author: Keith Parker, Len Krissa, Kris Hoisington
Publication Date: 2023
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While performing cathodic protection surveys, carrier pipe and casing potential readings are typically recorded at the same test station location near the end of a casing. Comparing these potentials should reveal a difference between the cathodically protected pipe versus an unprotected and electrically isolated casing. The difference in potentials is one of available tests to determine whether a casing may be electrically shorted to the carrier pipe. The pipe-to-electrolyte and casing-to-electrolyte potential comparison is usually the initial “screening” method.
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