TUBE CONTRACTOR Metronet has slashed the cost of renewing track by 75% by reducing the scope of work which needs to be done across 15km of the network.
The revised strategy will cut the cost per kilometre of track renewal by £5M and will save the contractor £75M in total.
It is seen as Metronet chief executive Andrew Lezala's first major breakthrough since he was brought in to shake up the company last April (NCE 21 April 2005).
Renewing track under London Underground (LUL) management previously involved replacing the rail, rail supports and part of the concrete base. Drilling out the concrete, removing it from site and pouring fresh concrete was the most time-consuming part of the process.
'We found that we didn't always have to break out the concrete if we could prove it was strong enough, ' said Metronet head of Tube track delivery Frank Fullick.
Metronet found that by using the new approach and programming the work better it could increase work rates by 80%.
Doubling the length of new rail installed from 90m sections to 180m also cut costs from £6.5M/km to £1.5M/km.