In-pipe coating integrity monitor for very long pipes

Details In-pipe coating integrity monitor for very long pipes In-pipe coating integrity monitor for very long pipes

2010-07-13

2011-10-04

Natalini, Jeff (Department: 2858)

Electricity: measuring and testing

For insulation fault of noncircuit elements

C324S559000, C324S238000

Reexamination Certificate

active

08030946

ABSTRACT:
Systems, methods and program products of instructions stored on a computer readable medium related to a tether free piggable inspection tool capable of detecting holidays and able to read and store non-conductive internal coating thickness values in very long conductive pipes, along with distance values for further off-line analysis, are provided. The inspection tool includes a plurality of thickness probes, a data storage unit, a control unit, a plurality of navigation wheels and a holiday detector that uses an electrical conductive medium, such as a gas or fluid, as the ground connection. A closed loop configuration is adopted allowing the system to autocorrect itself for different coating thicknesses along the pipe.

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patent: WO2007130723 (2007-11-01), None
PCT Search Report for related application PCT/US07/61575.

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