Draft Overview of HPC Construction - EDF Hinkley Point

4.3.21 Two all weather five a side sports pitches would be constructed to the north of thebuildings and the internal landscaping would be implemented.4.3.22 Security fencing, with associated lighting and CCTV, would then be erected aroundthe perimeter of the site.f) Construction of the National Grid 400kV Substation4.3.23 Construction of the 400kV substation will be a separate activity, undertaken byNational Grid and its contractors. In addition to the substation, National Grid willdivert some of the existing overhead lines in the vicinity of the site to serve the newsubstation. They will also provide a new overhead line link to the existing HinkleyPoint B 400kV substation.4.3.24 The 400kV substation compound includes a building which will house the gasinsulated switchgear, an amenity building, workshop buildings and a diesel generatorbuilding. In addition, there will be three inductors, which will be brought by sea toCombwich Wharf and then by road to site.g) Construction of the Emergency Access Road and the Bridge Over BumBrook4.3.25 The emergency access road provides an access route to the site for emergencyvehicles, which is independent of the main site access. It runs from a junction withthe road running through Shurton to the power station outage access, via the roadconnecting Wick Moor Drive to the southern power station car park.4.3.26 The emergency access road will not normally be used and there will be a locked gateat the junction in Shurton. The road is single-track with passing places andincorporates a bridge over Bum Brook. The bridge is single lane and is designed tokeep the road above the maximum flood level of Bum Brook whilst minimising therestriction to floodwater flows. It will also incorporate a footway to provide pedestrianaccess to the landscaped areas at the south of the site.4.3.27 The emergency access road junction in Shurton will be designed in accordance withhighway standards and will incorporate provision for adequate visibility splays andturning circles for emergency service vehicles. This will necessitate the removal of alength of existing hedge in order to achieve acceptable sight lines. New hedges willbe planted as part of the landscaping scheme and a pedestrian gate will be providedalongside the locked vehicle gate to facilitate pedestrian access.4.3.28 The southern part of the emergency access road, including the junction in Shurtonand the bridge over Bum Brook, will be constructed shortly after DevelopmentConsent is granted as part of the early landscaping of the area south of grid line144750mN. The northern part of the road will initially be temporary and connect tothe construction road network, although it will only be used as an alternative accessfor emergency vehicles. Once construction of Hinkley Point C is complete and theaccommodation campus buildings have been removed, a revised temporary routewill be established through the site of the campus so that the final landscaping canbe implemented and the final road alignment can be established across thelandscaped area.DRAFT | Overview of HPC Construction | February 2011 27