Tunnel Ventilation Upgrades — Jubilee and Northern Line Sites.

Descriptions

This is the complete upgrade of 4 London Underground mid-tunnel ventilation systems. 3 sites are on the Jubilee Line and 1 site is on the Northern Line. Works include removal of the existing ventilation systems, installation, commissioning and handover of upgraded systems. The works at are primarily mechanical and electrical in nature, although all sites have significant structural engineering element, including 1 site where there is extensive demolition and rebuilding works. A full detailed design will be provided by the Employer.