The Hidden Variable in Your Close Interval Survey
Pipeline professionals invest significant resources in planning CIS operations. But one variable is often underestimated until something goes wrong in the field: the quality of the survey trailing wire itself.
Survey wire is the physical and electrical link between the reference electrode and the data logger. Every pipe-to-soil reading passes through it. If the wire breaks, fails to make contact, or delivers inconsistent conductivity, the survey data is compromised – and the run may need to be repeated.
The Real Cost of Pigtail Failures
Ask any experienced CIS crew about their biggest field frustration. Pigtail failures will consistently top the list. The pigtail is the connection point between the wire and the electrode or dispenser assembly. It takes constant mechanical stress – wire tension, terrain, road crossings, and the daily wear of being dragged across the right-of-way.
When a pigtail breaks, the entire spool connected to it becomes unusable. The crew stops. A replacement is located. The data gap is documented. In remote pipeline corridors, that means real delays and real costs.
Advance Electrical’s pigtails are built to be the most durable in the industry. Our field-tested connections hold up where competing products fail – and it is one of the top reasons CIS contractors keep coming back.
Wire Breaks and Challenging Terrain
Road crossings, fence lines, and stockyards are high-stress zones where survey wire is most at risk of snapping. In these areas, heavier or more heavily insulated wire reduces break risk and maintains survey continuity. Our in-house spooling process allows us to customize wire configurations for projects with known terrain challenges.
Conductivity and Gauge Consistency
Accurate P/S potential readings depend on consistent electrical conductivity throughout the trailing wire. Variations in copper purity, gauge tolerance, or insulation quality introduce resistance that can skew voltage measurements and lead to incorrect assessments of CP system performance.
Advance Electrical sources all copper survey wire directly from a trusted manufacturer, ensuring consistent conductivity and tight gauge tolerances – spool after spool.
What to Look for in a Survey Wire Supplier
- In-house spooling capability – not just re-packaged product
- Consistent copper purity and gauge tolerance
- Field-proven pigtail construction
- Spool sizes compatible with your dispenser equipment
- Knowledgeable staff who understand CIS survey requirements
- Quick lead times to support project scheduling
With 40 years in the cathodic protection industry, Advance Electrical checks every box. Call (936) 588-4419 or visit advanceelectricalco.com to request a quote.
