London Power Tunnels

(asked on 18th May 2016) - View Source
Questioner
Portrait
Paul Monaghan
(Scottish National Party - Caithness, Sutherland and Easter Ross)

Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Energy and Climate Change, what the total length is of tunnels for each specific diameter being constructed by the London Power Tunnels Project; and what length of each such type of tunnel has been constructed to date.

Answered by
Andrea Leadsom Portrait
Andrea Leadsom
Parliamentary Under-Secretary (Department of Health and Social Care)
This question was answered on 26th May 2016

National Grid has said that:

The total length of the tunnels is 32km and tunnelling was completed in March 2015.

19.6km of the network was constructed using a 3m internal diameter tunnel boring

machine

  • Willesden to St John’s Wood 3m diameter tunnel – 7.4km

  • Wimbledon to Kensal Green 3m diameter tunnel – 12.2km.

    12.4km of the network was built using a 4m internal diameter tunnel boring machine

    - St John’s Wood to Hackney 4m diameter tunnel.

Reticulating Splines