22.6.3 Potential Impacts during Decommissioning 178. This section describes the potential impacts of the decommissioning of the onshore electrical transmission works including access with regards to impacts on land use and agriculture. The decommissioning of the project would be subject to a detailed decommissioning programme process as required by DECC under the Energy Act 2004. The approach provided below provides a high level likely approach which could be taken, however the exact nature of any procedures would depend on regulatory requirements and best practice in place at the time of decommissioning.
22.6.3.1 Landfall and onshore cable route 179. It is anticipated that the onshore cable would be decommissioned (de-energised) and the cables left in-situ. In this case there would be no impact for any receptor upon decommissioning. However, where cables are installed in ducts, it may be possible to remove and recycle them in which case impacts to receptors would be similar to, but likely be of lower magnitude than those described for construction in section 22.6.1. It is assumed that the jointing pits would be left in-situ.
180. The worst case scenario would be if excavation of the buried cables is required to facilitate for decommissioning. The potential impacts would then be similar to the potential impacts for construction of the cable route as outlined for Scenario 2 involving construction of temporary access, trenching and excavation etc. (refer to section 22.6.1).
22.6.3.2 Converter station 181. In relation to the converter station, the programme for decommissioning is expected to be similar in duration to the construction phase. The detailed activities and methodology would be determined later within the project lifetime, but are expected to include:
Dismantling and removal of outside electrical equipment from site; Removal of cabling from site;
Dismantling and removal of electrical equipment from within the converter station buildings;
Removal of main converter building and minor services equipment; Demolition of the support buildings and removal of fence; Landscaping and reinstatement of the site (including land drainage); and Removal of hard standing.
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 22 Land Use Page 50
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75