Cathodic Protection Design & Installation
ACC designs, supplies, installs and commissions impressed current and sacrificial anode cathodic protection systems for pipelines, tanks, marine structures and reinforced concrete. We select an approach suited to the asset and its environment, supporting new systems, replacements and substantial upgrades from specification through installation and commissioning. Our Majestic Building project demonstrates experience in hybrid cathodic protection design and specialist installation supervision.
Discuss Your CP System
Corrosion Investigation & Assessment
Understanding why corrosion occurs is the first step towards a suitable solution. ACC investigates deterioration and failures in steel and concrete assets through field inspections, targeted testing and corrosion-mechanism analysis. Our reports explain the findings and provide practical recommendations for repair, corrosion control and ongoing asset management. Recommendations may involve repairs, coatings, materials advice or other mitigation measures; a new cathodic protection installation is not always required. This includes root-cause analysis and advice on corrosion risk, material suitability and galvanic compatibility in the intended service environment.
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CP Surveys, Monitoring & Maintenance
Existing cathodic protection systems need regular assessment and maintenance to keep performing as intended. ACC provides routine and annual surveys, remote monitoring, performance assessment and fault-finding for pipelines, steel tanks and other protected assets. Depending on the system, testing can include instant-off potential measurements, depolarisation testing and system-output checks. We assess results against applicable protection criteria, standards and project specifications, identify deficiencies and recommend adjustments, repairs or upgrades. Clear engineering reports support maintenance planning and ongoing monitoring. Steel-tank surveys may also include anode-current and resistance measurements and isolation-flange testing.
Plan Your CP Monitoring
Concrete & Marine Corrosion Services
ACC assesses corrosion and durability in reinforced concrete, wharves, jetties, piles and other marine structures. Inspections, condition surveys and reinforcement-corrosion monitoring help establish the condition of the asset, identify deterioration and guide repair priorities. We also support cathodic protection design, installation and performance testing for concrete and marine assets, with recommendations suited to the structure, its exposure and maintenance needs. Depending on the structure, condition assessments may include visual and delamination surveys, concrete-cover measurements and non-destructive testing to guide repair priorities.
Discuss Your Structure
Pipeline Coating & CP Surveys
ACC carries out a range of specialised pipeline surveys, including Close Interval Potential Surveys (CIPS), Direct Current Voltage Gradient (DCVG), Alternating Current Voltage Gradient (ACVG), and pipeline current mapping (PCMx/ACCA). These techniques allow us to assess coating condition, cathodic protection performance and the electrical characteristics of buried pipelines.
We combine field measurements with engineering analysis to identify coating defects, areas of inadequate protection and locations requiring further investigation. Our reports clearly explain the findings and provide practical recommendations for monitoring, coating repairs or improvements to the cathodic protection system.
Stray Current & Interference Testing
Stray DC currents from traction systems, nearby cathodic protection installations and other electrical sources can contribute to corrosion in buried metal assets. ACC investigates potential interference through field testing, monitoring and data logging. We assess the electrical behaviour of the asset, interpret the corrosion risks and recommend appropriate mitigation measures. This work supports the diagnosis of existing problems and decisions about cathodic protection design, operation and ongoing monitoring.
Where required, ACC can coordinate pipeline electrical hazard (LFI/EPR) assessments in accordance with AS/NZS 4853 through a specialist electrical/earthing partner and integrate relevant outcomes with the cathodic protection design and specification.
Discuss Interference Testing
Electrical Continuity & Isolation Testing
Effective cathodic protection depends on the intended electrical connections and isolation within the system. ACC tests pipeline electrical continuity, insulating joints, bonds and associated infrastructure to identify defects and assess system integrity. Field testing helps establish whether components are connected or isolated as intended and whether electrical faults may be affecting protection performance. We interpret the findings and provide practical recommendations for further investigation, repairs or maintenance.
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CP System Fault-Finding & Upgrades
When a cathodic protection system is underperforming, ACC investigates the cause and helps determine the next steps. Our work includes assessment of rectifier performance, anode beds, reference electrodes, monitoring equipment and electrical connections. Output and potential testing, fault-finding and engineering analysis help identify deficiencies and inform practical recommendations for repairs, optimisation or upgrades. We support asset owners in understanding the condition of the existing system and planning work to improve its operation.
Discuss a CP System Fault
Corrosion Monitoring & Data Analysis
ACC provides field and remote monitoring of cathodic protection systems and reinforcement corrosion activity. We use data logging, trend analysis and engineering interpretation to assess performance and explain changes over time. Monitoring results support maintenance planning, further investigation and decisions about corrosion management. Clear reporting helps asset owners understand the findings, identify developing issues and determine appropriate follow-up actions for their infrastructure.
Discuss Corrosion Monitoring
Soil Resistivity & Current Drain Testing
Soil conditions and protection current requirements are important inputs to cathodic protection design. ACC undertakes soil resistivity and current drain testing to characterise site conditions and assess the current needed to protect an asset. We interpret the field measurements to support the design or upgrade of cathodic protection systems. Findings help inform engineering decisions about the protection approach and the requirements for the asset and its operating environment.
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