20 Years in Electrical Leak Location

MARCH 29, 2021

Our geosynthetics expert Carl Charpentier has been featured in a paper on Geosynthetica. for his 20 years career.

An article highlighting his journey, from his beginnings as an electronic technician to the specialist he has become in the ELL (Electrical Leak Location) field.


Permanent capping and the water puddle method

OCTOBER 8, 2020

Leak location is frequently used on permanent caps to prevent rainwater infiltration, ensuring that confined materials are allowed to dry out, to prevent biogas leaks and to verify the performance of collection systems.


Site extensions, natural materials and the water puddle method

OCTOBER 1, 2020

The electrical isolation of a survey site is much easier to achieve when the site is independent of its surroundings. However, site expansions also often require leak location. Carl Charpentier presents the key steps of a successful campaign on expansion cells.


Isolation, Mechanical Anchors and the Water Puddle Method

SEPTEMBER 24, 2020

Mechanical anchor points can register as leaks during leak location, as each screw hole allows current to pass into the foundation beneath the geomembrane layer. Carl Charpentier explains how to preform a successful water puddle survey despite the presence of mechanicanl anchors.


Low Points and Electrical Isolation in the Water Puddle Method

SEPTEMBER 17, 2020

In this article, Carl Charpentier considers the various challenges related to low points in confinement systems when applying the water puddle method.


Geosynthetics and creativity (GeoCreatives)

MAY 11, 2020

Our geosynthetics expert Carl Charpentier has been featured in a paper on Geosynthetica (a technical magazine dedicated to geosynthetics)

An interesting portrait of workers in the geosynthetics industry, discussing how they spend their free time and presenting a few of their hidden talents, proving that the world of engineering is not all about calculations and data, but it can also coexist with creative personalities.

The article features the lead of Groupe Alphard's Electrical Leak Location team, Carl Charpentier.


Defect in a geomembrane created by sheer tension

APRIL 4, 2020

In this article, Carl Charpentier shows us a serie of pictures of a rather rare penetration in a polyethylene geomembrane (HDPE).

The method used to locate that hole is called “dipole”...


Dipole on a geomembrane sitting on a GCL

MARCH 10, 2020

We are frequently asked about the impact of a GCL (geocomposite clay liner) on leak location. The answer is always the same : if the product is not completely desiccated...

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