Categories for Public

For the construction of the Calais cross-channel terminal’s public wastewater system. SEPD, the port operator, has selected the Boulogne-Sur-Mer Agency (Arras Regional Division), in partnership with Veolia, to build the system. From individual to shared Currently routed and treated using micro-plants, wastewater from the site’s 15 buildings, i.e. approx. 70m3/h, is set to be collected and discharged into the town’s shared system by next spring. This change of method requires the construction of custom infrastructure. New systems SADE’s teams built a 1.3km interlocking PVC CR16 ø200 tube gravity system including 55 manholes, a 1.3km, HDPE ø90 backflow system including 20...

The town of Beauvais is reinforcing one of its main clear wells supplying the town centre. Managed by the Beauvais Agency (Arras Regional Division) in collaboration with Veolia, this worksite involves the reinforcement of the connection of a well, located at the top of a slope, to the catchment wells and distribution system set up downhill. Technically speaking, it consists of the construction on the side of a slope on 30°-gradient (i.e. 60%) terrain over a 30m stretch, of two parallel underground cast-iron ø400 pipes, the first to supply and the second to distribute. A complex worksite The worksite was...

Or how to build systems hoping that, just for once, they will never be needed… Securing fuel cooling ponds, in case of pump prime loss, is a key component of our post-Fukushima operations. At Penly and Paluel, the Normandy Regional Division is building the main systems for the Backup Water Supplies (BWS) to tackle this major issue. One process For both nuclear power plants, the BWS works in the same way. The process involves building capable infrastructure, irrespective of events (earthquake, flood, etc.) to route water - via a gravity system, i.e. using zero energy - from the existing basins...

…with SADERTELEC, which renewed its framework agreement with the electricity transmission company. Do we still need to introduce SADERTELEC, our subsidiary that works exclusively for RTE, and whose headquarters are based in Marseille? A little history, all the same… It was back in 2009 that the Marseille Regional Division got in touch with the electricity transmission company, realising that burying very high voltage lines (63 to 400KV) was a fast-growing business. Our initial aim was to offer specific structural services, particularly microtunneling with STS. In 2013, a new entity was created to specifically focus on this business line: SADERTELEC. This...

No problem, SADE has got the skills! As part of a judicial enquiry led by OFB (the French Biodiversity Office or “environmental police”), DREAL (Direction Régionale de l'Environnement, de l'Aménagement et du Logement, i.e. Regional Environment, Development & Housing Directorate) issued formal notice to Gelagri, a Loudéac-based business, regarding its wastewater discharge management. Excerpt from Ouest France newspaper “Kilometres of stream have been polluted”, says Alain Marteil, chairman of Loudéac fishery (Côtes-d’Armor). “This is organic pollution spreading down from the Calouët stormwater basin that appears to have been discharged into the Ouest River level near La Ville Léo”, explains Jean...

In Lyon, Gantelet-Galaberthier has dug a tunnel 5 metres under the water table and 8 metres under natural ground level, using a standard sheltered technique with jet grouting in the soil mass. The Lyon subsidiary set itself the impressive challenge of creating the final section of these sewer mains along 180m! This is the first time a gallery has been dug using traditional methods in the alluvium of the Saône river. To achieve this, a technique had to be devised in order to create a waterproof underground mass, from surface level, around the future location of the gallery, enabling miners...

SADE Group is bolstering Bouaké’s drinking water supply for PFO Africa, head of the consortium awarded the overall contract by the Ivory Coast Hydraulics Ministry. After work began on the site at the end of March 2020, COVID-19 put a real spanner in the works: repatriation, temporary site shutdown, plus new health & safety rules. The project practically ground to a halt for several months, leading to comprehensive reorganisation last July.  Since then, 3 teams armed with an impressive selection of excavation equipment have been working 6 days a week to meet the deadline: two Ø 1,200 teams and one...