Methods and systems for automated pipeline testing

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters

Reexamination Certificate

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C324S713000

Reexamination Certificate

active

07317321

ABSTRACT:
A method for testing effectiveness of a cathodic protection device configured to apply at least one voltage across an underground structure and a reference point is described. The method includes providing a sample of the material from which the underground structure is fabricated, placing the sample proximate the underground structure, electrically connecting the sample to the underground structure through a switch, operating the switch at predetermined intervals, and measuring electrical characteristics of the sample at intervals based at least partially on the predetermined intervals and a position of the switch.

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