Technical Discussions: Re: Thickness Measurement of buried Pipelines

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Re: Thickness Measurement of buried Pipelines
Posted by: Uli Mletzko (PID_130), E-mail: mletzko@mpa.uni-stuttgart.de, on January 16, 2003 at 10:21 :
In Reply to: Thickness Measurement of buried Pipelines posted by : paresh , E-mail: ndtindia@yahoo.com, on January 15, 2003 at 12:35 :
: Actually pipelines I am talking is buried below the ground level up to 2 meter depth. Pipeline is accessable only at start point and at end. In the pipeline there are 12-18 number of valves and total length of pipeline length is approx 180 Km. at present to be tested.
If you have 180 km of pipeline, but if you want to know about wall thickness at selected locations (e.g. railway crossing), IMHO there is no other way than to dig access holes into the ground to reach the OD of the pipeline, and then to try to apply guided wave ultrasonics wittin a range of some meters.
Regards
Uli Mletzko
MPA, University of Stuttgart, Germany

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: : Actually pipelines I am talking is buried below the ground level up to 2 meter depth. Pipeline is accessable only at start point and at end. In the pipeline there are 12-18 number of valves and total length of pipeline length is approx 180 Km. at present to be tested. . : If you have 180 km of pipeline, but if you want to know about wall thickness at selected locations (e.g. railway crossing), IMHO there is no other way than to dig access holes into the ground to reach the OD of the pipeline, and then to try to apply guided wave ultrasonics wittin a range of some meters. . : Regards : Uli Mletzko . : MPA, University of Stuttgart, Germany .

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