Plastic Pipes Conference Association # 2023 Lake Buena Vista
Jennifer Ravereau, Catherine GIORNI, Benjamin RABAUD, Frederic Mohier, Mehdi Ahmadi
Pipe installation and renewal are critical for network management and extension both in terms of cost and of logistics for installation. Plastic materials, as polyethylene, are constantly evolving to offer additional benefits (chemical resistance improvement, mechanical resistance, innovative functionalities). However, they may bring about drawbacks for operators related to installation requirements such as the use of welding techniques.
This work aims to evaluate new solutions for improving productivity and safety of operators during work on water distribution network, switching from traditional pipes to innovative plastic pipes with restraint joint. Thus, it aims to assess different pipe solutions considering the following criteria: durability, safety, ease, and cost of installation.
Two locked joint technologies were tested with two main steps: a field test in France and accelerated ageing tests. In the field, the restraint technologies were compared to two traditional technologies. The accelerated ageing tests of polyethylene jointing methods were carried out for 18 months under different conditions: oxidative solutions (ClO2, HOCl and reference H2O), pressure (6 bar), and temperature (40°C).
The field test validated the benefits of locked joint technologies in terms of laying rate, cost, safer working conditions, and environmental impacts compared to traditional materials and techniques. The long-term performance assessed through the accelerated ageing tests allowed to select the most reliable restraint joint technology.
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