CIPS & DCVG SURVEY
Corrosion Control & Services – SBU
CIPS SURVEY
A close interval potential survey (CIPS) is a preventive action that can help prevent this corrosion before it starts. CIPS is one part of asuite of tools used to identify conditions that cause corrosion, allowing you to assess the effectiveness of the cathodic protection (CP) system protecting your pipeline – ensuring it is operating to NACE SP0169 specified standards.
PT Tri Mulya Gemilang provides a variety of monitoring and inspection services for cathodic protection systems. In addition to the design and installation of CP systems, Trimulya’s trained technicians provide surveys, non- destructive testing and other services to monitor the efficiency, productivity and output of CP systems. This is integral to any CP program and ensures the continued operation of your facility.
DCVG SURVEY
Direct Current Voltage Gradient (DCVG) surveys are used to evaluate defects in pipeline coatings. Corrosion normally occurs where the bare metal surface of a pipeline comes in contact with its surrounding electrolyte (water and soil). The primary purpose of a DCVG survey is to find and size pipeline coating anomalies associated with corrosion.
CIPS for Potential Surveys and DCVG for Coating Condition Surveys. Like all survey equipment, the Hexcorder Millennium is equipped with a 12-satellite GPS engine for interruption synchronization as well as coordinate display and logging. It can store GPS time and pipeline chainage. It comes with 1 Mbyte of non-volatile CMOS RAM, factory upgradeable to 2 Mbytes. It comes with a large graphic LCD display for text and graphs, and 40-key QWERTY keyboard for data entry. It is shipped ready to use and includes new CuCuSO4 half cells and a spool of wire.
The unit can simultaneously measure and record structure-to-electrolyte potentials as well as the voltage gradient between two half-cells. It can measure and store the rectifier ON and Instant OFF structure-to-electrolyte potentials, voltage gradients, chainage, GPS coordinates, and UTC time. It has a built-in active filter to minimize the effect of induced AC voltages on the measured structure-to-electrolyte potentials. The active AC filter combined with software rejection results in over 80 dB of AC rejection.