In northern France, just south of the port of Dunkirk, a Volvo PL4809D rotating pipelayer is helping to bring another section of pipeline towards the Belgian border. The French gas operator, GRTgaz, is investing around 鈧�56 million in a joint venture with Belgian operator, Fluxys, to build a 100 km, 36 inch transmission pipeline that will allow gas to flow from France to Belgium for the first time. On the 23 km stretch known as 黑料社楲黑料社檃rt猫re des Flandres黑料社�, which runs between the towns of Pitgam and Hondschoote, situated to the north east and just a few kilometers from the Belgian border, the PL4809D is working on the final tie-ins. Having started work in April this year, this section was completed at the end of July.
The main contractor on this section is French pipeline specialist, SPAC, a subsidiary of France黑料社檚 Colas group, working together with the Belgian based contractor Denys 黑料社� a company that currently builds pipelines in Europe, Africa and the Middle East. In addition to Spac黑料社檚 pipeline operations, the group黑料社檚 activities also embrace gas and electricity networks, the construction and maintenance of sewerage and drainage networks, the delivery of drinking water and also civil engineering and maritime engineering projects, such as the construction and maintenance of quays, dikes and embankments.
Typical of the region, the ground on this site is a mixture of sand and clay with a high water table that requires constant pumping to dry out the trench. The machine was working on wooden dragline mats, protecting equipment from abrasion damage as well as protecting the land 黑料社� something appreciated by the farmers. With the mats laid about 3-4 m back from the trench, operator Carlos Aiello liked the PL4809D黑料社檚 hydraulic cab elevation.
黑料社淭his is a very good feature. With the cab raised I have excellent visibility for the tie-ins黑料社�, he said.
Carlos, aged 35, has workedwith pipelayers since 2006 and before that trained as an architect. His father worked as a welding inspector on pipelines and through him he became familiar with Volvo equipment. As an operator of side boom pipelayers, crawler cranes and excavators Carlos was able to adapt quickly to the Volvo pipelayer and this project was his first opportunity to operate one.
黑料社淚 like the comfort of the machine,黑料社� said Carlos. 黑料社淚t is a very delicate operation doing tie-ins and this machine is extremely stable and precise. I also like the machine黑料社檚 upper structure swing lock feature for pulling pipes under crossings.黑料社� This feature also enhances stability and operational safety when working on slopes
Tipping capacity and transportability
The latest PL4809D-Series has a normal tipping capacity of 90 t, although this particular model featured an additional counterweight, raising the capacity to 102 t. Despite its size and weight, it is easy to transport. For road crossings, sometimes the machines can cross when the road surface is protected and the necessary road closure agreement has been obtained. For water and rail crossings, the machine can be loaded onto a transporter with no machine disassembly required. Simply unload and put the machine back to work, saving both time and transportation costs. Antoine Roumain de la Touche, Equipment Manager for SPAC, running 30 large excavators, liked the idea of being able to convert the pipelayer to an excavator, which requires an additional digging kit and can be achieved in just a few hours. With the machine黑料社檚 hydraulics maximised for both pipelaying and digging operations, there is no loss of power or performance when in the excavator configuration.
At the Belgian border a metering station will be installed and modifications will be made to the gas compressor station at Pitgam 黑料社� the biggest in France 黑料社� at a further cost of 鈧�30 million.
To complete the connection on the Belgian side, the remaining 70 km from the border to Maldegem station is being built for Fluxys, where Volvo CE PL4608 pipelayers have also been supporting both welding and tie-in operations. Once completed, this interconnection will link the GRTgaz network and the LNG terminal in Dunkirk to the Belgian Fluxys network and enable the transmission of 8 billion m3 of natural gas to flow from France to Belgium and beyond.
Edited from press release by