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Amex© Seals rehabilitate remote irrigation pipe in Australia

Murrumbidgee is one of the largest private irrigation companies in Australia serving over 3,260 landholdings that are owned by over 2,300 shareholder customers within an area of 378,911 hectares. The irrigation water and drainage services provided have helped create a diverse and highly productive agricultural region known as the Murrumbidgee Irrigation Area (MIA).

In 2020 a series of four RCP large irrigation pipelines faced joint and spot damage, causing immense leakage and water loss. The local irrigation renewal alliance realized the need to repair the pipelines to conserve water and began looking for a solution.

Challenges


The four pipelines on Gum Creek Rd Griffith presented a number of challenges. First, the pipelines are extremely large, measuring at just over 2 meters in diameter. This severely limited the different types of rehabilitation methods that could be considered. In addition to this, the pipelines were located in a regional part of NSW, resulting in the need for a product that needed no maintenance with a long design life.


Finally, due to the upstream gates not sealing and bringing continual steady water flow into the pipes, the team used pumping equipment to drain the water to a manageable level each morning. This is one of the key advantages of installing the Amex Mono© Seal – it can be installed whilst some minor water flow is present.

Outcomes


It was determined that the Amex© Seal system would be the best solution for rehabilitating these pipelines. The Amex Mono© 180mm width seal was chosen because it can be installed despite continual water flow, the flexibility of the EPDM rubber and design life. Working with its partner in Australia, Drainco, the installation of 80 Amex Mono© seals took place over the course of several days. Since then, exfiltration has ceased and the pipes are running at full capacity.



Amex Mono© Specifications


How it works

Amex© Seals are composed of EPDM rubber providing both flexibility and endurance

With a size range from 180mm to 6000mm, there is something for almost every job

Depending on the damage, the width of the seal ranges from 180mm to 600mm

Tested to withstand internal pressures of up to 25 bar and external pressure up to 8 bar

The seals can be installed in any type of pipe material and most shapes


Main advantages

Use of hydraulic tool allows for quick and easy installation

Design life of over 50 years!

More than 30 years of experience between our technicians

Own production and service

No resin, no impregnation, and no curing needed

Can be custom made to fit your specifications

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