scroby sands offshore wind farm update 18 april 2002 anne marie coyle n.
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Scroby Sands Offshore Wind Farm Update 18 April 2002 Anne-marie Coyle. Scroby Sands Update. Introduction & Overview. Powergen Renewables portfolio The wind farm The site Background – technical Background – environmental Consenting route Likely conditions

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Presentation Transcript
scroby sands update
Scroby Sands Update

Introduction & Overview

  • Powergen Renewables portfolio
  • The wind farm
  • The site
  • Background – technical
  • Background – environmental
  • Consenting route
  • Likely conditions
  • Construction 1 – Contract Strategy
  • Construction 2 – Installation
  • That picture – with a difference…
slide3

Bowbeat

Deucheran Hill

Siddick

Blyth Offshore

Bessy Bell

Great Eppleton

Siddick

Out Newton

Lowca

Ovenden Moor

Askam

Royd Moor

Rhyd-y-Groes

Completed pre 2000

Blood Hill

Rheidol

Completed construction in 2000

Tursillagh

St Breock

Construction in 2001

Scroby Sands Update

Powergen Renewables Existing Portfolio

scroby sands update1
Scroby Sands Update

Scroby Sands Offshore Wind Farm

  • Up to 38 2MW wind turbines
  • Steel monopile foundations - location specific
  • 3 export cable runs totalling 27km plus 11km cable run
  • Onshore works winter 2002
  • Offshore works summer 2003
  • Visitors Centre
slide5

Scroby Sands Update

Scroby Sands - the site

  • Scroby Sands - 3km x 12km dynamic bank system
  • North Middle and South Banks
  • Average depth approx 3m - 12m
  • 2m tidal range
  • Up to 3 knot tides
  • Sand, sandy gravel and clay
  • Best weather window April - September
scroby sands update2
Scroby Sands Update

Background - Technical Studies

  • Site assessment commenced in 1993-4
  • Anemometry mast installed 1995
  • Good port facilities at Great Yarmouth
  • Grid connection survey and evaluation
  • Seismic, bathymetry and test bore studies
  • Metocean data collection
  • Export cable route planning
  • Site electrical infrastructure
  • Detailed foundation design
scroby sands upadte
Scroby Sands Upadte

Background - Environmental Studies

  • Seals and Birds
  • Benthic assessment
  • Fisheries assessment
  • Sand bank and coastal geomorphology
  • Wave climate
  • Marine archaeology
  • Noise assessment
  • Navigation, traffic and shipping
  • Aviation, television, radio and radar
scroby sands update3
Scroby Sands Update

Consenting Route

  • Crown Estate prequalification in April 2001
  • DTLR - Section 34 Coast Protection Act 1949
  • DEFRA - Section 5 Food and Environment Protection Act 1985
  • DTI - Section 36 Electricity Act 1989

incorporating General Permitted Development Order

scroby sands update4
Scroby Sands Update

Likely Conditions

DEFRA

  • Installation Sequence
  • Birds
  • Seals
  • Benthos
  • Subsea vibration monitoring
  • Coastal processes
  • Beach profiles
  • Geomorphology
  • Scour

DTI

  • Noise
  • Hours of work
  • Micrositing
  • Colour
  • TV & radio surveys
  • CAA

DTLR

  • Cables
  • Navigation aids
slide10

Supply

Grid connection

  • All Cables

Install

Onshore cables

Scroby Sands Update

Construction 1 - Contract Strategy

Supply

Turbines

Monopiles

WTG switchgear

SCADA

EPC

Install

Monopiles

Turbines

Offshore Cables

SCADA

WTG switchgear

PROWL

slide11

Scroby Sands Update

Construction 2 - Installation

  • Constrained by Little Terns
  • Avoid southern most row until end July
  • Piles South to North
  • Turbines North to South
  • Cabling
  • Commissioning