Power station - South London


Portastor, part of York-based Shepherd Group Engineering, has designed, built and installed 12 Portable Relay Rooms (PRR) and other auxiliary modules which house electrical protection and control equipment at New Cross, London for the South East Electricity Substation Alliance (SEESA), which is made up of representatives from Alstom Grid, Skanska and Mott MacDonald, who work for client National Grid.

The £900k contract is part of an on-going national investment programme by National Grid, which includes the improvement and expansion of electricity substations such as the one at New Cross.

Portastor continues to work in collaboration with SEESA, providing pre-fabricated modular buildings designed and manufactured off-site to rigorous specifications and standards. Previous contracts include modular buildings designed, manufactured and installed at Bramford in Suffolk, Sellindge in Kent and Chafford Hundred in Greater London.

At New Cross, an initial seven PRRs were delivered during the first phase of the expansion programme, with the remaining five delivered at the start of December as part of the second phase, which is due for completion in 2015.

Portastor CEO David Jennings said: “The benefit of using off-site construction during the investment programme is clearly one which resonates with clients operating in hazardous environments such as electricity substations. Our experienced team has an excellent knowledge of the specifications and standards expected in the power sector, and this is evidenced by our close working relationship with our partners at SEESA.”

Portastor sister company Yorkon, part of National Grid’s Framework, has also supplied a modular amenity building at New Cross, providing office and welfare facilities for site staff. Yorkon completed the amenity building a week ahead of schedule, after only three weeks on site.

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