Wimbledon Substation

Wimbledon Substation

Background

Vac-Ex have completed a vacuum excavation project in London underground, as part of National Grid’s seven year ‘London Power Tunnels’ project aimed at rewiring the capital. This major electricity substation is on the 275kV and 132kv underground lines networks.

Job Description

Reduced level dig across the new building footprint to prove existing and unknown services.

Key Issues

Limited space and tight access on site therefore creating a difficult working footprint.

Solution

By rear steer with a 32t Mega vacuum excavation machine and “Mega Arm” extendable hydraulic power arm, we excavated from the furthest point first with our National Grid Person (Substation) Operator with 15 years’ experience.

Conclusion

Successfully achieved a reduced level dig and highlighted dozens of unknown services with ZERO strikes. There were no reported incidents in respect of service strikes.

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