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Pipeline

solor powered cathodic protection

Solar Powered Cathodic Protection Systems—Design Considerations

Solar powered cathodic protection systems require careful design to minimize current and resistance requirements, since power supply costs increase exponentially with wattage. Key strategies include conservative current sizing, low-resistance anode bed configurations, and deploying multiple smaller systems to reduce…
ac corrosion social

AC Corrosion Criteria: What It Is & How to Identify It

NACE SP21424-2018 establishes AC corrosion control criteria for cathodically protected pipelines based on time-weighted AC and DC current densities, with thresholds that vary depending on whether DC current density is controlled below 1 A/m².
ac mitigation grounding sketch

Case Study: AC Mitigation Design Criterion – It Matters

On a 200-mile pipeline project with 41 high-voltage AC collocations, changing the AC mitigation design criterion from 30 A/m² to 50 A/m² and refining input data reduced parallel mitigation requirements by nearly 50 miles, illustrating how criterion selection significantly affects project scope and cost.
cathodic protection remote monitoring

Cathodic Protection Remote Monitoring

Cathodic protection remote monitoring systems allow pipeline operators to continuously oversee CP and AC mitigation performance without dispatching technicians to remote locations. This article covers the equipment, features, and data transmission methods common in modern CP remote monitoring deployments.
pipeline cathodic protection as264156927

New Pipeline Cathodic Protection Design | 12 Things to Consider

Designing cathodic protection systems for new pipelines requires attention to a broad set of factors beyond basic CP principles. This article outlines 12 key considerations—including soil resistivity, pipeline routing, coating type, and operating conditions—that CP designers should address during the design phase.
hdd bore zinc ribbon installation

Zinc Ribbon Installation Projects

Two MATCOR AC mitigation projects highlight zinc ribbon installation capabilities in challenging environments. The first used horizontal directional drilling in a congested northwestern Ohio corridor, while the second employed specialized rock trenching equipment at a highly rocky site in West Texas.
pipeline recoating services

PHMSA Rule Making Updates – a look at what is ahead on the US Regulatory Front

The US pipeline regulatory environment was moving toward new PHMSA rules expanding integrity management and safety requirements. This article reviews key pending changes, including the Liquids Final Rule that extended integrity management and leak detection obligations beyond high consequence areas.
pipeline cathodic protection design new transmission station

Pipeline Cathodic Protection Design for New Transmission Stations

Growth in US pipeline construction has increased demand for cathodic protection engineering at new transmission stations. This article describes MATCOR’s approach to cathodic protection design for new compressor and pump stations, including the installation advantages of linear anodes in new construction environments.
aging pipeline coatings as107283129

Remediation Options for Aging Pipeline Coating Systems

As pipeline coating systems age and degrade, operators must evaluate remediation strategies to maintain pipeline integrity. This article examines two approaches—pipeline recoating and linear anode installation—as alternatives for managing aging pipelines with deteriorating external coating systems.
pipeline rehabilitation article

Pipeline Rehabilitation and “Attenuation Deficit Disorder”

Aging pipeline coatings are failing worldwide, degrading cathodic protection performance in what MATCOR describes as “attenuation deficit disorder.” This article examines two rehabilitation strategies—pipeline recoating and linear anode installation—for operators facing deteriorating CP coverage on aging pipelines.
close interval survey article

Not Just a Walk Along the ROW: Close Interval Potential Surveys

Close Interval Potential Surveys (CIPS) or close interval surveys (CIS) for those in the United States, are an invaluable assessment tool used to maintain pipeline integrity.

Private: Oil sands critics target a new concern – pipelines

Critics of Canada’s oil sands industry have argued that oil sands crude poses elevated pipeline corrosion risks due to higher contaminant levels than conventional crude. The debate gained legislative attention during discussions of the proposed Keystone XL pipeline following a series of North American pipeline spills.
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FLASH RECTIFIER SALE

Need a Rectifier Now? We Have It.

Get a tested MATCOR rectifier without the manufacturing wait. Our in-stock units are ready to ship. Limited quantities available.

See Available Rectifiers
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