Specialized Oil & Gas Engineering Co.Ltd

96638923777

http://www.kcg.cc

I – PRE DESIGN SITE SURVEY

An initial survey to identify site conditions relevant to corrosion con trol e.g. for buried pipes and tank bases etc. The survey would involve investigation of the following factors:

Soil resistivity test and analysis.
Checking whether interference exists.
Pipeline crossings or parallel.
Road crossings.
Overhead HV power lines.
Note any other features that might have a significant effect on the system.
The result of this survey in conjunction with information on the structure / plant to be protected provide basic information for the design of the corrosion protection system whether to be Sacrificial System or Impressed Current System as well as the type of the anode ground bed to be installed in case of impressed Current System.

II – CP-SYSTEM DESIGN

Design of the Cathodic Protection System includes:

Survey Report
Design Calculation
Bill of Materials
Detailed Drawings
Installation Procedure
Any other information required for the project
All designs submitted by SOGEC are performed according to client’s highest and professional standards. These standards are applied for calculations, material selection and drafting. During calculations, SOGEC uses advanced and up-to-date softwares and simulation programs to simulate the actual performance of our CP-Systems. Even during construction phases, SOGEC might be called for technical ad vices that could include providing alternative economical CP System which still meet highest quality standards.

III – SUPPLY OF MATERIAL

SOGEC is proud to introduce itself as the only authorized LIDA® anode customer in the Kingdom of Saudi Arabia. LIDA® is a part of group. The advantages of being so are:

Lower prices than the factory itself
Better delivery schedule due to availability of material in stocks. SOGEC supplies the materials as per the design, bill of materials and in compliance with:
Client’s specifications and standards
NACE Standards
British Standards
Any other applicable standards
SOGEC supplies any type of Impressed Current Anodes such as:

High Silicon Anodes (bare or canistered)
Graphite Anodes
Mixed Metal Oxide Anodes, i.e.:
Tubular Anodes (LIDA)
Rod Anodes (LIDA)
Mesh Anodes (LIDA)
Ribbon Anodes (LIDA)
Mesh Ribbon Anodes (LIDA)
SOGEC supplies a wide variety of sacrificial anodes to suit all requirements such as:

Magnesium Anodes.
Zinc Anodes
Aluminum Anodes These anodes may be supplied in any shape or configuration to suit application requirements.
SOGEC also supplies various types of Transformer Rectifiers for Impressed Current System, which maybe manufactured to client’s specifications:

Air cooled or oil cooled
Constant voltage, constant current
Dual controlled current or voltage
Indoor, outdoor use
Automatic potential controlled
For hazardous, Non-hazardous areas
Single phase or 3 phase input voltage
IV – INSTALLATION

SOGEC installs or supervises the installation of any cathodic protec tion systems in any part of the Arabian Gulf Countries. As for the installation itself, SOGEC is confident to install all types of CP Systems meeting the highest professional standards and client’s schedules and deadlines. None of SOGEC installations occur without the supervision and approval of our QA/QC Department.

Our installations are complete from supplying the manpower (labor ers, technicians, engineers, project managers) to supplying the equipments (drilling machines, welding machines etc…)

V – TESTING AND COMMISSIONING

Upon the completion of the installation of the cathodic protection sys tems, SOGEC engineers test and commission the CP System, adjust the output current and voltage to achieve the required level of protection for the structure.

SOGEC then submits a fully detailed report on the performance of the system complete with as-built drawings.

VI – MONITORING OF THE SYSTEMS

SOGEC offers a monitoring procedure to maintain control of the protection system with regular inspection so that continuous protection is ensured and maintained.

Our installations are complete from supplying the manpower (labor ers, technicians, engineers, project managers) to supplying the equipments (drilling machines, welding machines etc…)

VII – AC INTERFERENCE & MITIGATION

SOGEC represents in Saudi Arabia ARK Engineering & Technical Ser vices Inc. which is a leading company for the AC Interference & Mitigation. Pipelines are often forced to share right-of way corridors with high voltage power lines and other facilities.

As a result inductive and conductive electrical interference is an in creasingly familiar problem.The induced voltages and currents due to the AC interference can cause a number of safety issues if not handled properly.

The installation of mitigation systems on the pipelines can reduce the interference levels and eliminate safety and operational issues. Through field surveys and investigation, ARK Engineering determines voltage levels and current flow in both the underground structures and overhead electrical networks.

Once the current flow is assessed in detail, an effective mitigation sys tem can reduce electrical interference to safe levels. This design will be integrated into the client’s construction drawing to aid in implementation of the mitigation system during the installation and testing phase. As part of our comprehensive engineering services, we provide post commissioning testing to ensure that the mitigation sys tem is functioning as designed and that it is effectively reducing the interference levels in the buried structures.

VIII – CIPS & DCVG SURVEY

The Close Interval Potential Survey (CIPS) and Direct Current Voltage Gradient (DCVG) Survey are two techniques that work together us ing the pipeline’s Cathodic Protection System to evaluate its protective efficiency and its coating conditions. CIPS technique evaluates the pipeline protection level and may indicate the present coating faults through pipe to soil potential.

DCVG is a coating fault locating technique. The DCVG technique is a method for detecting CathodicProtection current pickup at coating holidays.

Combining the two techniques, with the Transformer Rectifier of the CP System set at On/Off measurements, the method require synchronous switching of all applicable DC current sources polarizing the pipeline section under survey. This type of measurement allows determination of the CP effectiveness and detection of insulation leak ages (coating defect).