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maryko
Member

Join Date: Jun 2009
Location: Iran
Posts: 7

Gas pipeline leak detection

06/20/2009 1:19 AM

What methods/equipments are available to detect leaks in a natural gas pipeline?
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Pathfinder Tags: leak detection
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ducon
Guru

Join Date: Dec 2006
Location: Hop around Toronto, New York & Karachi
Posts: 1876
Good Answers: 19
#1

Re: Gas pipeline leak detection

06/20/2009 12:34 PM

Various depending on type of gas :

Easy - soap water test.

Siniffing Dogs - No joke!

Flame ionization detector

Soil monitoring method

Flow monotiring devices to measure rate of changes of pressure and/or the mass flow rates at different section of the pipeline.

Active Optical method; Tunable diode laser absorption spectroscopy(TDLAS).

Passive Optical method: Thernal imaging and multi-wavw imaging.

Finally - Get an expert fropm your Gas Company.

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edwardgrifffin
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Join Date: Jun 2009
Location: Opelousas,LA
Posts: 1
#2
In reply to #1

Re: Gas pipeline leak detection

06/20/2009 6:02 PM

Sniffing dogs are certainly no joke, It's our speciality. How much line are we talking and of what size? There are numerous ways to find a leak currently being used by gas companies.

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SAMSAM
Active Contributor

Join Date: Dec 2008
Posts: 17
#3

Re: Gas pipeline leak detection

06/20/2009 6:25 PM

Hi,

To DETECT not to ANALYSE i would use gas detector with simple sensor (wheatstone bridge) vide catalityc for combustible gases.

Calibrate it for CH4 which is if i remember correctly 90-95 % vol of natural gas.

The sensors are quite cheap just use google with fraze " CH4 detection".

BR,

SAM
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The Prof
Guru
Engineering Fields - Mechanical Engineering - New Member Hobbies - CNC - New Member

Join Date: Aug 2006
Location: Western Australia
Posts: 767
Good Answers: 58
#4

Re: Gas pipeline leak detection

06/22/2009 1:57 AM

Expensive, but a very good tool (usual disclaimer).

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