Riddes - construction work

Notification number: 2020-01

Description: The project consists of the creation of 3 new phase shifter transformers (PST) in the Riddes substation area. The following activities are planned within the project:
- Dismantling of old underground reinforced concrete foundations corresponding to an old configuration of the station.
- Rehabilitation of existing reinforced concrete foundations that are in a poor state of preservation
- Construction of 3 new PST and the corresponding operational buildings
- Manufacturing of the new AIS equipment required for the future operation of the site
- Realization of an extension of the existing GIS service building
- The delivery, installation and commissioning of all SAS equipment required for the renovation of the station.
- The delivery, installation and commissioning of the station's internal services
- The adaptation of the earth network, the drainage system, the sewage and wastewater system and the outdoor facilities to integrate the building project into the existing environment

The following works must be carried out within the framework of this tender for the construction of the new 220 kV building:

• Construction site facilities, including fences and security measures, access gates, construction site slopes.
• demolition of existing underground structures
• excavation, concrete and finishing work
• excavation and civil engineering work
• Delivery and installation of the system earthing