Civil engineering works and installation and welding of pre-insulated steel tubes as part of the construction of the Bayonne PRISSE urban heat network Civil Engineering Works and Installation and Welding of pre-insulated steel tubes as part of...

Civil engineering works and installation and welding of pre-insulated steel tubes as part of the construction of the Bayonne PRISSE urban heat network Civil Engineering Works and Installation and Welding of pre-insulated steel tubes as part of the construction of the Bayonne PRISSE urban heat network
The mission which will be entrusted to the service provider will be for - Earthworks/trenching to position the networks - Laying of the tubes in the trenches - Welding of the tubes, implementation of the leak detection system, - Refilling of the trenches, including all the material (sand, gravel, etc.) and all the equipment (warning mesh, etc.) - Renovation of the horizontal surfaces identically (green spaces, bitumen, etc.) - Possible installation manholes / draft chambers, key vents - Penetrations into buildings - Possibly, the installation of ducts for optical fiber The heat network, made up of pre-insulated steel tubes, with steel tube diameters between DN32 and DN200, will have a length of between 5000 and 6000 linear meters of trenches. The market is divided into sections: a firm section (main feeder) and optional sections (relating to other antennas) defined subsequently in the business consultation file. The market will not include the supply of tubes.