Patent ID: 7669614
Filing Date: 2010-03-02
Classification: F16L

Abstract:
1. A method for pipeline rehabilitation grout coverage inspection, the method comprising: installing a tubular liner within a pipeline by filling a space between the tubular liner and the pipeline with grout, wherein the tubular liner and the pipeline each have a front end and a back end; creating a heat transfer across the tubular liner by cooling an inside of the tubular liner; observing the inside of the tubular liner with an infrared camera to detect an infrared signal differential between areas of the tubular liner in contact with the grout and areas of the tubular liner not in contact with the grout; mounting the infrared camera on a camera frame with two or more wheels; coupling the camera frame with a swab; advancing the swab through the tubular liner from the front end to the back end of the tubular liner to distribute the grout between the tubular liner and the pipeline; and observing the inside of the tubular liner with the infrared camera during advancing of the swab.