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524 views
02:05 Nov-04-2002

Theodoros Theodoulidis

Teacher, Researcher
University of Western Macedonia,
Greece,
Joined Dec 1999
5
Infrared Thermography of buried pipes

Is it possible to detect bad insulation or leakage from a buried hot water pipe located about 1m underground?
The pipe is used in district central heating.
The equipment to be used: Thermocamera Agema 570 from Flir.
Is there any literature on the subject?




 
08:12 Nov-05-2002
Kåre Johansson
Re: Infrared Thermography of buried pipes : Is it possible to detect bad insulation or leakage from a buried hot water pipe located about 1m underground?
: The pipe is used in district central heating.
: The equipment to be used: Thermocamera Agema 570 from Flir.
: Is there any literature on the subject?
.
We have detected "thermal leakage" using an Ageema 550. Unfortunately it is difficult to say if such thermal leakage is due to insultation failure or leaking hot water. Only digging in the affected areas will tell you. In our case it was the sand and backfill which had settled. Perhaps experience will show the difference between leaks and settlement.

I don't know of any literature, but I am sure there is some - somewhere.
Regards Kåre Johansson


 
08:59 Nov-05-2002
Otto Kroggel
Re: Infrared Thermography of buried pipes : Is it possible to detect bad insulation or leakage from a buried hot water pipe located about 1m underground?
: The pipe is used in district central heating.
: The equipment to be used: Thermocamera Agema 570 from Flir.
: Is there any literature on the subject?
.
the combination (data fusion) of data from thermography and ground penetrating Radar could be helpful, provided that the surrounding ground is relatively dry in cases of no leakage.
Perhaps a little bit less effort than digging.


 


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