CERN’s technical galleries are used for distribution network services throughout the campus and/or between buildings. The 80 galleries form a 14 km-long maze and are located just below ground level on the Meyrin and Prévessin sites. Having been in operation for more than 50 years, they are in dire need of an overhaul. This is why the Technical Galleries Consolidation programme (TG-CONS) was approved by the CERN Council in 2020 with a budget of 34 MCHF. The programme was launched in 2021 and will stretch over 12 years
The main objectives of the TG-CONS project are to:
- Fix existing issues and refurbish the galleries’ conditions to the extent reasonably possible.
- Prepare for probable future expansions, with respect to CERN’s MasterPlan 2040.
- Further improve the management of safety and environment-related aspects.
The programme covers a multitude of services and networks, such as the heating network, water networks, safety systems, electrical cables, gas pipes, and optical fibres.
Many of CERN’s departments are involved, including the HSE Unit. Safety is a major part of this programme, both throughout its execution and for the future operation of the galleries.
TG-CONS is a unique opportunity to perform a comprehensive safety analysis and assessment and implement the required measures. As an example, there are ongoing studies on ventilation, emergency preparedness, fire safety, and a lead and asbestos analysis. The TG-CONS were invited to the HSE Technical Management Board in April 2023, and you can find all the presentations on the Indico-page (Access key: TMB05042023).
The programme also addresses environmental issues, such as the renovation of the water circuits, carrying drinking water supply but also water used by the CERN Fire & Rescue service. The layout of the drinking water network in the West Area of the Meyrin site have just been completely revised and optimised. Take a tour of your own with a deep dive in this video!