CEATI REPORT No. T203700-3715B for project 3715. The testing was performed and the report was prepared by Powertech Labs Inc. PRCI co-funded the CEATI project.
An annual report summarized the work completed in the third phase of the project. The relationship between the coupon and the pipe was the primary focus. The overall objectives of Phase III are: (1) to provide a better understanding of the…
The Phase II study was divided into four tasks: Task 1 - Review of Coupon Studies, Task 2 - QperatThg PipeiThe Site Evaluations, Task 3 - Test Site Evaluations, and Task 4 - Guide/ The Development the purposes of Task 1 was to review other studies…
Demonstrates the concept of using surface or subsurface potential surveys to assess the effectiveness of cathodic protection of coated pipelines. Two electrical analogs have been developed to simulate bot discrete and parallel ribbon sacrificial…
Investigates possible techniques to monitor cathodic protection levels at inaccessible and remote locations. Includes field testing of five techniques under two different conditions.
Describes a portable measurement system capable of holiday detection and the estimation of holiday polarized potentials. The unit consisting of a data logger and associated signal conditioning circuitry is housed in a man carried pack. A belt worn…
Describes the development of 'the E-i method' for determining the resting potential of a cathodically protected pipeline. The revised method relies upon a linear-regression fit of a line to on and instant-off potentials and an extrapolation of that…
Research into the induction and conduction coupling response of a pipeline co-located with an electric power transmission line to assess the high voltage coupling response under fault conditions. Capacitive discharge tests were performed on primarily…
The objective of this research was to provide an evaluation of commercially available CP survey equipment used for measuring off-potentials on a pipeline. The objective was accomplished by a series of field evaluations on operating pipelines designed…