CTL Products & Services
Cathodic Protection System Supply
CTL Corrosion Technologies supplies a full range of corrosion control equipment and materials, including:
- Impressed Current Anodes
- Sacrificial/Galvanic Anodes
- Dielectric Isolation Kits
- A.C. to D.C. Rectifiers
- Coke Breeze
- Digital Volt/Amp Meters
- Current Interrupters
- Reference Electrodes
- Soil Resistance Meters
- Current Test Meters
- Direct Burial Cable
- Electrical Tapes
- System Survey Equipment
- Test Stations
Cathodic Protection System Installation
CTL installs cathodic protection systems to protect metal structures exposed to soil or liquid (electrolytic) environments.
- Oil/Gas/Water Pipelines
- Oil/Gas Well Casings
- Tank Farms
- Plant and Battery Facilities
- Concrete Reinforcement
Cathodic Protection System Maintenance
Proper routine maintenance is imperative for maximum efficiency and operation life of the Cathodic Protection System.
CTL Corrosion Technologies’ goal is to:
“Provide an efficient Cathodic Protection System maintenance program that is coherent with the technical and budgetary requirements of our clients.”
Cathodic Protection System Surveys
There are two main activities involved in a Cathodic Protection Survey:
- The inspection of the cathodic protection system (sacrificial and/or impressed current)
- The collection of structure-to-soil potentials on the steel structures electrically continuous with the cathodic protection system.
CTL will consult with field operations personnel prior to the survey to review any changes to the pipeline network. During and following the survey, the technician reviews the results for any necessary cathodic protection upgrades required for optimal system operation.
Minor remedial upgrades, will be addressed before leaving the field, to avoid the extra cost of a subsequent field trip. A technical report, data and deficiency list is provided, which compiles the results, and details any outstanding remedial work.
The schedule for the Cathodic Protection System Survey procedure, explained below, is determined by client requirements.
1. Inspection and adjustment of D.C. current devices (rectifiers, anode bed, test points, current control devices)
2. An interrupted, both, “ON” and “OFF” voltage readings survey is conducted. The structure-to-soil potential data collected throughout the systems provides an additional indication of the level of cathodic protection.
3. All points of electrical isolation are checked to ensure the dielectric devices remain effective.
4. Foreign structures are checked for possible stray current (interference) effects.
5. A detailed and complete report is provided to the client in a timely manner.
Owner / Operator Rectifier Surveillance
Rectifier readings must be obtained by qualified/certified personnel. Our technical staff can schedule routine rectifier readings for the client or analyze supplied data and any concerns or deficiencies will be discussed with your field personnel.
Company certified field personnel record the rectifier data and submit the information to CTL via facsimile (403-227-3842) or email (rectifiers@corrosiontechnologies.ca).
CTL will analyze the data, and any concerns or deficiencies will be discussed with field personnel. The data is tracked monthly to ensure the readings are recorded and submitted.
Arch Over-the-Line System
The Arch OTL system is a fully integrated and operational system designed and tested to conduct various surveys in order to determine the effectiveness of corrosion protection and evaluate the pipeline coating.
The survey system combines precision, accuracy, and ease of operation as its core capabilities. Built from the ground up, Arch is a light-weight, compact system designed with a focus on cathodic protection principles.
It is capable of capturing:
- AC Voltage Gradient (ACVG)
- AC Current Attenuation (ACCA)
- Close Interval Surveys (CIS)
- Depth of Cover (DOC)
- Sub-Meter GPS (SMGPS)
- Elevation Profile (EP)
Multiple ports are still available to add additional capabilities (Sonar, Leak Detection, ETC.) as required. The software has been proven through extensive field testing.
AC Interference
What is AC Interference?
AC Interference occurs when a pipeline becomes coupled with high voltage AC transmission lines. AC interference can create safety hazards to personnel due to unsafe AC voltages being transferred to pipelines, and integrity hazards due to AC corrosion. This has become an increasingly prevalent issue as more pipelines and electrical transmission lines are built on shared right-of-ways (ROW).
CTL Corrosion Technologies offer AC Interference services that include:
- Initial field testing
- Interference Modelling
- AC Mitigation Design
- AC Mitigation Installation
- AC Mitigation Monitoring and Evaluation
- 3rd Party Review
Head Office
Innisfail, AB T4G 1S7