Cathodic Protection Services
Cathodic Protection is an electrochemical means of corrosion control in which the oxidation reaction in a galvanic cell is concentrated at the anode and suppresses corrosion of the cathode in the same cell.
The steel pipeline is cathodically protected by its connection to a sacrificial magnesium anode buried in the same soil electrolyte.
Cathodic protection was first developed by Sir Humphrey Davy in 1824 as a means of controlling corrosion on British naval ships.
Cathodic protection prevents corrosion by converting all of the anodic (active) sites on the metal surface to cathodic (passive) sites by supplying electrical current (or free electrons) from an alternate source. Usually this takes the form of galvanic anodes, which are more active than steel.
Cathodic protection systems are systems which are designed to control the corrosion of a metal surface. Corrosion can destroy the integrity of your infrastructure. Patching the damaged area may seem the simplest and least expensive process of repair, but it may also be the least effective method for cathodic protection. Materials used for patching soon require repairs, and on a cyclical basis - each time growing more expensive.
These repairs weaken the structure and may lead to the need for total replacement.
Our engineers understand the principles of corrosion, we can provide you with a cost effective corrosion control system designed to protect your infrastructure and prevent corrosion in new structures and mitigate corrosion in existing structures .
GPS construction teamhas the expertise to install galvanic and impressed current cathodic protection systems in piping systems, storage tanks and marine structures.
Construction Services EquipmentOur equipment is the highest quality and maintained to the highest standard.
GPS is a leading provider of cathodic protection services, equipment and materials for the world's infrastructure. Designing and installing cathodic protection systems for maximum long-term protection. Services,
equipment and materials include:
Cathodic Protection Systems • Field surveys • System specifications and designs • Plans and detail drawings
System Materials and Construction • Conventional groundbeds • Deep anode groundbeds • Distributed anode systems • Cathodic protection test stations
Power Supplies • Transformer – rectifiers • Solar power systems • Thermoelectric generators
Interference Control Systems • Bond stations • Auxiliary drainage systems • AC interference mitigation • DC interference mitigation • Fault current protection
maintenance and inspection programs designed for cost-effective cathodic protection system performance and corrosion control. Our service is performed by qualified cathodic protection technicians to maintain the corrosion control objectives of the owner.
Automatically Controlled Rectifiers
Rectifiers furnished are specifically designed for the water industry. Our standard automatically controlled rectifiers provide continuous and accurate performance for optimum corrosion control under all conditions. We offer custom designs for special applications or customer requirements.
Services include:
When underground metallic pipelines are in close proximity to high voltage power transmission lines, they are subjected to the electromagnetic field created by the alternating current (AC).
AC Interference Services
* Soil testing with variable frequency instruments
* Multi-layer soil resistivity measurements and modeling
* Subsurface geologic investigations
* Electrical ground resistance-to-earth measurements
* High voltage transmission system analysis
* Modeling of induced AC and fault currents
* AC interference mitigation cathodic protection designs
DC Interference Services
* Field testing for foreign pipeline influence
* transit system current analysis
* Computer modeling of stray current interference
* Interference mitigation designs
related services include:
• Pipeline Cleaning. o Smart Pigs and scrapers o Surfactants o Black powder removal • Pipeline Modifications • Launchers and Receivers • Tool Selection o Gauging o Deformation o Magnetic Flux Leakage (MFL) o Ultrasonic Thickness (UT) • Program Implementation • Aboveground Marker (AGM) Placement and Documentation • Inspection Monitoring • Inspection Analysis • Information Integration • Data Analysis and Correlation • Rehabilitation Programs
Our team of internal corrosion experts provide
Our team of internal corrosion experts provide comprehensive solutions for internal pipeline integrity. These services cover initial corrosion assessment and testing, design and planning of mitigation programs and measurement of the efficacy of corrosion control efforts. Starting with Internal Corrosion Direct Assessment (ICDA) to identify maximum risk locations, the control of internal corrosion in pipelines is optimized by one or more of
The following activities:
• Pipeline System Evaluation and Assessment
• Engineering Calculations
o ICDA process optimization
o Prediction of corrosivity
• Laboratory Analysis of Gas, Liquids and Solids
• Microbiologically Influenced Corrosion (MIC)
Testing, Studies and Evaluation
• Corrosion Monitoring
o Coupons
o Probes
o NDT (Non-Destructive Testing, In-line Inspection,
Ultrasonic)
Cathodic Protection Services
Downloads
| Rig Inspection Services | Full Rig Inspection |
| Lifting Inspection | Lifting Services |
| NDT Common Methods | NDT Common Methods |
| Tanks Services | storage tank Ins. |
| Pipeline Services | Pipeline Ins. |
| Advanced NDT Services | Advanced NDT |
| EX Services | Explosion Proof Ins. |
| Drops Services | Dropped Object Surveys |
| Calibration Services | Calibration & Testing |
| Tubular Inspection Services | Tubular inspection |
| Training Services | Training |
| Drilling Services | GPS Drilling Services |
| Pipeline Construction Services | Pipeline Construction |
| Other Services | Fire (Alarm & Fighting Systems |
| blasting and painting | sandblasting and painting |