Leak location
Geosynthetics | October 2011
GMA techline answers from Bob Koerner
RE: Leak location
I have been reading though the GSI White Paper #8 regarding the CQA method.
I am designing a reservoir that will be around 50ft deep and has many 2:1 sideslopes (uncovered 60-mil HDPE liner) that I would also need to test for leakage.
It doesn’t seem that the ELLS water-puddle technique could be used on sideslopes. How are sideslopes to be tested?
Also, I am not quite understanding the electrical part of the water-puddle technique. Can you help me connect the dots on that issue?
(Rob | California)
Reply: The sideslopes are usually surveyed using a spray of water placed immediately before the electrode does its monitoring. ASTM is set up nicely in this regard with five or six methods, one of the being the water-spray method specifically for sideslopes.
Regarding the circuitry, it is rather straightforward and the ASTM methods are quite descriptive in this regard. Please be aware that there are certified companies that provide such service.
P.S. I hope that you are using textured sheet.
Reply: Thanks for the answers. And yes, we are using a textured sheet.
(Rob | California)
RSS
Twitter
Facebook
Comments
Comments are the opinion of individual posters and do not reflect the views of Geosynthetics or Industrial Fabrics Association International.
11:32 am CST
Leak Location
Dear Dr. Koerner
We as a company would like to introduce into the Bolivian market the leak detection process. However, I have been unable to find the tools (equipment) necessary for this to evaluate the whole project.
Can you guide us through this?
Thank you.
Best regards,
Mauricio Lema
Submit a Comment