Environmental Statement Chapter 5 Project Description .Environmental Statement Chapter 5 Project

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Text of Environmental Statement Chapter 5 Project Description .Environmental Statement Chapter 5 Project

  • August 2013

    Environmental Statement Chapter 5 Project Description Application Reference: 6.5

  • DOGGER BANK CREYKE BECK

    F-OFC-CH-005 Issue 4 2013 Forewind Chapter 5 Page ii

    Document Title Dogger Bank Creyke Beck

    Environmental Statement Chapter 5

    Project Description

    Forewind Document Reference F-OFC-CH-005 Issue 4

    Date August 2013

    Drafted by Forewind

    Checked by Adrian Pattison

    Date / initials check AP 05/08/2013

    Approved by Mark Legerton

    Date / initials approval ML 05/08/2013

    Forewind Approval FAC

    Date / Reference approval FAC 05/08/2013

  • DOGGER BANK CREYKE BECK

    F-OFC-CH-005 Issue 4 2013 Forewind Chapter 5 Page iii

    Title: Dogger Bank Creyke Beck Environmental Statement - Chapter 5 Project Description

    Contract No. (if applicable) (Onshore / Offshore)

    Document Number: F-OFC-CH-005

    Issue No: 4

    Issue Date: 05-Aug-13

    Status: Issued for 1st. Technical Review Issued for 2nd. Technical Review

    Issued for PEI3 Issued for Application Submission

    Prepared by:

    Forewind Engineering & Electrical Teams

    Checked by:

    Adrian Pattison / Sophie Barrell

    Approved by: Mark Legerton

    Signature / Approval (Forewind)

    Mark Legerton

    Approval Date: 05-Aug-13

    Revision History

    Date Issue No. Remarks / Reason for Issue Author Checked Approved

    31/10/2012 1 Draft for first technical review Forewind ER AP

    21/01/2013 2 Draft for second technical review Forewind ER ML

    21/03/2013 3 Issued for PEI3 Forewind AP ML

    05/08/2013 4 Issued for Application Submission Forewind AP ML

  • DOGGER BANK CREYKE BECK

    F-OFC-CH-005 Issue 4 2013 Forewind Chapter 5 Page iv

    Contents

    1 Introduction ................................................................................................................... 1

    1.1 Overview ............................................................................................................. 1

    1.2 Project Development Envelope - Flexibility ......................................................... 1

    1.3 Project Description - Summary ........................................................................... 2

    1.4 Project Capacities & Overplanting ...................................................................... 8

    1.5 Project Output & Electricity Generation ............................................................... 8

    1.6 Links to the Development Consent Order ........................................................... 9

    1.7 Relevant Guidance ........................................................................................... 11

    1.8 Consultation ...................................................................................................... 14

    2 Site Description ........................................................................................................... 21

    2.1 Site Location ..................................................................................................... 21

    2.2 Offshore Site Description .................................................................................. 36

    2.3 Onshore Site Description .................................................................................. 37

    3 Offshore Project Components ..................................................................................... 40

    3.1 Wind Turbines ................................................................................................... 40

    3.2 Offshore Structure Foundations ........................................................................ 50

    3.3 Protection Against Foundation Scour & Subsea Damage ................................. 78

    3.4 Grout ................................................................................................................. 82

    3.5 Seabed Preparation, Drilling & Disposal of Spoil Arisings ................................ 83

    3.6 Piling & Noise Modelling ................................................................................... 88

    3.7 Offshore Platforms ............................................................................................ 97

    3.8 Offshore Cables .............................................................................................. 104

    3.9 Offshore Cable Installation and Removal ........................................................ 110

    3.10 Remedial Cable Protection ............................................................................. 118

    3.11 Offshore Cable & Pipeline Crossings .............................................................. 124

    3.12 Offshore Electromagnetic Fields ..................................................................... 129

    3.13 Meteorological Monitoring Stations ................................................................. 133

    3.14 Vessel Moorings ............................................................................................. 136

    4 Onshore Project Components ................................................................................... 139

    4.1 Cable Landfall ................................................................................................. 139

  • DOGGER BANK CREYKE BECK

    F-OFC-CH-005 Issue 4 2013 Forewind Chapter 5 Page v

    4.2 Onshore Cables .............................................................................................. 142

    4.3 Onshore Cable Routes ................................................................................... 145

    4.4 Cable Installation ............................................................................................ 149

    4.5 Onshore Construction ..................................................................................... 163

    4.6 Onshore Converter Station ............................................................................. 174

    4.7 Expected Construction Traffic ......................................................................... 178

    5 Offshore Project Layouts ........................................................................................... 179

    5.1 Wind Farm Layouts ......................................................................................... 179

    5.2 Wind Turbine Array Layout Rules ................................................................... 180

    5.3 Layout of Other Offshore Project Components ............................................... 187

    5.4 Wind Turbine Spacing ..................................................................................... 187

    5.5 Proximity to Existing Infrastructure .................................................................. 188

    6 Project Life Cycle ...................................................................................................... 190

    6.2 Pre-Construction Engineering Surveys ........................................................... 190

    6.3 Construction .................................................................................................... 191

    6.4 Commissioning ............................................................................................... 204

    6.5 Operation & Maintenance ............................................................................... 205

    6.6 Replanting/Life Extension ............................................................................... 214

    6.7 Decommissioning ............................................................................................ 215

    7 Health & Safety and Environmental Management .................................................... 220

    7.1 Health and Safety ........................................................................................... 220

    7.2 Waste Management ........................................................................................ 220

    7.3 Hazardous Material ......................................................................................... 222

    7.4 Safety Zones and Other Potential Navigation Safety Measures ..................... 224

    7.5 Navigation and Aviation Safety Markings ........................................................ 225

  • DOGGER BANK CREYKE BECK

    F-OFC-CH-005 Issue 4 2013 Forewind Chapter 5 Page vi

    Table of Tables

    Table 1.1: Summary of key project components ........................................................... 6

    Table 1.2: Key project capacity figures (per individual project) ..................................... 8

    Table 1.3: NPS requirements ...................................................................................... 11

    Table 1.4: Summary of key consultation and issues raised by consultees.................. 15

    Table 2.1: Key Zone characteristics ............................................................................ 21

    Table 2.2: Dogger Bank Creyke Beck A key project characteristics............................ 23

    Table 2.3: Dogger Bank Creyke Beck A boundary co-ordinates ................................. 24

    Table 2.4: Dogger Bank Creyke Beck B key project characteristics............................ 24

    Table 2.5: Dogger Bank Creyke Beck B boundary co-ordinates ................................. 25

    Table 2.6: Export cable corridor key co-ordinates (major vertices) ............................. 28

    Table 2.7: Temporary work area dimensions