AMPP Store - Products tagged with 'interference'

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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

$20.00

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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10102 High Voltage Direct Current Interference with Underground/Underwater Pipelines

Product Number: 51300-10102-SG

ISBN: 10102 2010 CP

Author: Peter Nicholson

Publication Date: 2010

$20.00

This paper will outline the effect of stray current that originates from an HVDC transmission system that runs parallel to and crosses a crude oil and natural gas pipeline system.

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51317--9786-Risk Analysis for Assessing AC Corrosion in Trasnmission Pipelines

Product Number: 51317--9786-SG

ISBN: 9786 2017 CP

Author: Alfonso Garcia Rojas

Publication Date: 2017

$20.00

Expansion has increased the risk of AC in pipelines. In this work, calculations of induced AC voltage and current are performed for scenarios involving: HVAC transmission powerline configuration, lateral distance to the transmission pipeline, and parallelism between the transmission lines, soil, and pipeline and coating properties.

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A Novel Approach to Assessing Stray Current Interference without Potential Interruption

Product Number: 51324-20452-SG

Author: Parker B. Robbins

Publication Date: 2024

$40.00

A novel approach is proposed to assess a procedure for testing whether a pipeline may be interfered with from DC stray current. With the rise in popularity of portable coupons in AC mitigation testing, the paper proposes a method to evaluate DC stray current with a portable or stationary coupon without requiring potential interruption on foreign structures. This may allow technicians to conduct additional testing on suspected interference spots without requiring the interruption of a foreign pipeline or structure. This paper outlines and proposes a procedure for determining the likelihood of DC stray current interference utilizing coupons. Additionally, the paper recommends and outlines a proposed study to assess the accuracy of the techniques in the proposed procedure. While DC current cannot typically be measured and quantified for a bare metal holiday on a pipeline, coupons allow for a controlled and measurable connection to a simulated pipeline holiday. The procedure may be utilized to distinguish when suppressed potentials are occurring on a pipeline as a result of DC stray current interference rather than from inadequate current provided by CP system, a foreign voltage gradient, shielding or electrical grounding, even when the source of current is unknown. The procedure may also be beneficial in situations with atypical interring-structures where the existence of the interfering structure is unknown or where the applied voltage of the interfering structure cannot be interrupted traditionally such as with the prevalence of DC current situations occurring from installed or newly repaired direct-buried communication utility cables with weak splices at unknown locations. The procedure may also be utilized as an initial step to determine first steps in a DC stray current interference situation.

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A Pipeline Operator’s Experience With AC Induced Corrosion

Product Number: 51321-16518-SG

Author: Kyle Platt

Publication Date: 2021

$20.00

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AC Corrosion At Other Frequencies Part A: Field Investigation And Mitigation

Product Number: 51321-16807-SG

Author: Wolfgang Fieltsch, P. Eng.; Fation Shahinas, P. Eng.; Andreas Junker Olesen, Ph.D., Eng.; Lars Vendelbo Nielsen, Ph.D., Eng.

Publication Date: 2021

$20.00

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Cathodic Protect Area Of Influence Study

Product Number: 51321-16877-SG

Author: Jared Pannell; Naga Vijayasankaran; Elens van Roggen Corrpro

Publication Date: 2021

$20.00

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Effective Pipeline Corrosion Monitoring in Regions Impacted by External DC Polarization Factors

Product Number: 51324-21132-SG

Author: Angel R. Kowalski; Jason Charles Land; W. Brain Holtsbaum

Publication Date: 2024

$40.00

Effective pipeline external corrosion control can be achieved by maintaining an adequate balance between the coating condition and the cathodic protection level. When a pipeline is in a corridor shared with parallel buried pipelines and high voltage alternating current (HVAC) power transmission lines, determining the adequacy of the cathodic protection (CP) system becomes a challenge. Misinterpretation of data being collected, or unreliable data can lead to the implementation of either ineffective or excessive mitigation programs for these pipelines. To obtain a better representation of the year-round performance of the CP system, additional testing to the conventional adjustive survey or close interval potential survey (CIPS or CIS) might be required on transmission pipelines collocated in HVAC corridors. The variation of the structure-to-electrolyte potential values over time and the effect of polarization cell replacement (PCR) units should be assessed when determining the level of polarization of the pipeline. Data from a case study is analyzed to illustrate additional testing procedures required to minimize the effects of HVAC systems when monitoring the CP level on transmission pipelines. The proper interpretation of the field monitoring data allows pipeline operators to develop and implement effective corrosion control mitigation plans.

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Interference Study between a Solar Array Power Station and a Transmission Pipeline

Product Number: 51324-21051-SG

Author: Andres Peratta; Cristina Peratta; John Baynham; Nora Villamizar Piñeros; Didier Lozano Abril

Publication Date: 2024

$40.00

It is nowadays becoming increasingly common for new onshore structures and electrification systems to be installed in close vicinity to existing underground pipelines already equipped with their own CP and earthing systems. The problem with sharing common right of way between different structures is that their different earthing and CP systems are likely to interfere with each other. The coupling may reduce the performance of the individual designs or lead to major problems such as stray currents or shielding effects. Numerical modelling of these types of scenarios allows identifying such problems in advance, gaining understanding on the nature of the interference, and evaluating possible mitigation strategies. In this work the impact of constructing a solar power station across a set of transmission pipelines is investigated. The pipelines are protected by an ICCP system. The solar array includes galvanized piles and copper earthing system. The territory is mainly composed of clays or muds with flat and slightly undulating shapes with average resistivities in the order of 900 O-cm. Simulation results are presented showing the status of the pipelines before and after the solar array is constructed, as well as the solar array considering that the pipeline does not exist. The results show that the solar array piles and earthing system have measurable effects on the CP potentials on the pipeline.

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Laying the Foundation for an Engineered and Integrated Approach to Pipeline External Corrosion Protection

Product Number: 51322-17962-SG

Author: Keith Parker, Trey Johnston, Dale Lindemuth, Alfonso Garcia, Stephen B. Gibson

Publication Date: 2022

$20.00

Enbridge is proposing to develop a program that utilizes state-of-the-art technologies and proven inspection methods to prescribe interventions related to external corrosion mitigation using a predictive, integrated approach. This new program embraces complex problems by collecting, analyzing, and integrating environmental, pipeline integrity, and corrosion control data to predict external corrosion risk with sound engineering models (mechanistic, reliability and risk) to anticipate, prevent, and contain unexpected events.

Products tagged with 'interference'

Association for Materials Protection and Performance