logo
Discover our complete solutions portfolio covering Cathodic Protection and Corrosion management - PCB design and plating - Functional and decorative plating - Electrocoating - Acoustics
Discover
Protect
Elsyca V-PIMS
A revolution in digital PIMS combining Pipeline Corrosion Integrity Management System (PIMS) and computational modeling capabilities
Elsyca IRIS
Deep analysis of AC threats and design and engineering of efficient mitigation systems
Elsyca CatPro
Graphical simulation platform for cathodic protection and DC stray current analysis of pipeline networks
Elsyca CPManager
3D CAD-based software simulation platform for the design and analysis of cathodic protection installations
Elsyca ACTA
Unique engineering service offering accurate, disambiguated, and tailored risk ranking report of pipeline networks
Plate
Elsyca PlatingManager
Leverage a digital twin of your plating line to predict plating performance and increase manufacturing capacity
Elsyca CuBE
Avoid signal integrity problems during the design phase using an upfront, accurate and easy DFM test
Elsyca PCBBalance
The world’s only PCB DFM software that applies automated and optimized copper balancing to your PCB design and panel layout.
Elsyca PCBPlate
State-of-the-art graphical simulation platform for enhancing the plating performance of your PCB panel and pattern plating processes.
Elsyca ECoatMaster
CAD independent software platform for the simulation of the automotive electrocoating process of a body-in-white (BIW).
Elsyca EPOS
Simulate the performances of electropolishing processes based on a virtual mock-up of the electropolishing cell.
Elsyca AnodizingManager
State-of-the-art graphical simulation platform for analyzing the production performance and quality of anodizing processes.
Innovate
Elsyca CorrosionMaster
CorrosionMaster identifies corrosion hot spots and predicts corrosion rates, enabling engineers to look at alternative material combinations and/or coating systems, or investigate corrosion-mitigating measures.
Elsyca LeakageMaster
Improve vehicles interior acoustic comfort by performing upfront virtual smoke tests.
Elsyca MeshingMaster
Automatically creates meshes for a variety of applications such as acoustics, CFD, thermal analysis, etc
Elsyca XPlorer
Interactive simulation results viewer for Finite Elements results

Variances in Pipeline AC Interference Computational Modeling (NACE 2019)

Smart surveys for AC corrosion prevention

Variances in Pipeline AC Interference Computational Modeling (NACE 2019)

There are various ways of modelling pipeline and High Voltage AC (HVAC) AC interference, and depending upon the inputs and the pipeline calibration, this can result in various results and outputs, which can often be to the detriment of the pipeline owner/operator.

There are a number of important parameters, however, one of the most critical aspects pertains to the accuracy of locating and measuring the relative changes and values in the soil resistivity along the pipeline route. The soil resistivity can have a significant impact on the pipelines coating resistance, which can in turn, affects both the computed AC voltages and current densities. These can have a significant impact on both safety and the integrity of the pipeline, due to the AC corrosion current density. The other very important parameters, regarding the accuracy of the modelling pertain to both the power line LEF and EMF, measurements, together with the AC pipe to soil potentials, which are all used to “calibrate” the AC Interference, especially where powerline load data is absent.

Insufficient soil resistivity data, can have a dire impact on the magnitude and location of the AC Mitigation system. When one compares the significant impact these measurements can have, when collected every 1,000ft versus every 5,280ft (1 mile), and how this is further exacerbated particularly where these soil resistivity measurement values change significantly along the route. The net result of the accuracy of the soil resistivity field data relative to the actual routing, affects the correct placement of the AC Mitigation (grounding), as well as the resistance of the grounding, which in turn has a cost implication to the asset owners and/or operators.

It is therefore critical that the correct locations and adequacy of data is collected for the AC Interference studies, to prevent costly installations and to mitigate the incorrect positioning of AC Mitigation systems, due to inadequate information.

Download pdf