ADVERTORIAL
The Primus Liner for rehabilitating the brine transport pipeline runs from the
drum into the corresponding excavation pit. On the left in the picture is the connecting piece for the bypass.
Double application of Primus Line®
In the south of France, operator KEM ONE uses the Primus Line® system for both the habilitation of a brine transport pipeline and for a bypass solution. The latter ensures the supply of the production plant during the rehabilitation work.
KEM ONE, one of Europe’s largest vinyl producers, is rehabilitating an eight-kilometre section of a transport pipeline for brine with a total length of 92 kilometres between its saline in Vauvert and the production plant in Fos-sur-Mer in the south of France. From the brine, KEM ONE extracts raw materials to produce vinyl chloride monomer (VCM). In order to maintain the brine supply to the plant in Fos-sur-Mer and thus also production, the transport pipeline is being rehabilitated in eight sections of one kilometre each. To do so, a bypass is used for every rehabilitation section. A realisation period of one month is estimated for each section. The entire project, however, extends over 18 months, as there is a pause during the summer months due to the regional forest fire risk.
Why this solution?
The DN 300 steel transport line runs through the Natura 2000 protected area of the Camargue: safe transport and protection of the environment are top priorities. As the eight-kilometre-long pipeline had already suffered various damages over time, KEM ONE decided to rehabilitate it.
“We looked at different technical solutions: One of the first was to replace the pipe in its original position with a traditional steel pipeline,” explains Mathieu Bernardini, Pipelines Manager at KEM ONE. “Then we thought about a solution based on polyethylene (PE). And after some consideration, we chose the product from Rädlinger primus line GmbH.”
Both financial and organisational aspects were crucial for the decision: The combination of rehabilitation with a trenchless system and maintenance of operation via bypass is considerably more cost- effective than the new laying of the transport pipeline in conventional, open construction. Furthermore, the trenchless method substantially facilitated the authorisation process that every French operator has to pass for rehabilitation projects in the protected area. “It is extremely complicated to excavate trenches here. We are not only in a nature reserve, but also in the middle of a collection of pipelines from various regional utilities,” explains Jérôme Boissière, Managing Director of Altero Travaux Publics, installation partner of Rädlinger primus line GmbH in France. “These pipelines transport hazardous materials in some cases. The environmental aspect is omnipresent.“
Together with Primus Line experts and the engineering company Eureteq, a specialist in transport pipelines, Altero developed the idea of working trenchless and with bypasses. DREAL PACA, the regional directorate of the Ministère de la Transition Ecoologique (Ministry of Ecological Transition) and responsible for environment,
30 | October 2023 |
www.draintraderltd.com
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