Panel 27 th November 2017 0 0 Introduction Presentation at the - - PowerPoint PPT Presentation

▶
panel
SMART_READER_LITE
LIVE PREVIEW

Panel 27 th November 2017 0 0 Introduction Presentation at the - - PowerPoint PPT Presentation

Mar 17, 2023 220 likes •589 views

Preesall Underground Gas Storage Community Liaison Panel 27 th November 2017 0 0 Introduction Presentation at the request of CLP Governance of Group Introductions and Programme 1 Agenda Introduction Overview

slide-1
SLIDE 1

Preesall Underground Gas Storage

Community Liaison Panel 27th November 2017

slide-2
SLIDE 2

1

Introduction

  • Presentation at the request of CLP
  • Governance of Group
  • Introductions and Programme
slide-3
SLIDE 3

2

  • Introduction
  • Overview
  • Construction Process
  • Environmental Stewardship
  • Q&A

Agenda

slide-4
SLIDE 4

3

Overview

Extent of the Preesall Underground Gas Storage Scheme:

slide-5
SLIDE 5

National Transmission System

Caverns Dock River Wyre Irish Sea

Preesall Underground Gas Storage Scheme: How it works

Nateby

slide-6
SLIDE 6

National Transmission System

Caverns Dock River Wyre Irish Sea

Preesall Underground Gas Storage Scheme: How it works

slide-7
SLIDE 7

7

Overview

What we have been doing since the DCO was granted?

  • Commercial – Contractors, Investors & market sector
  • Technical – Surveys & Design
  • Engagement – Regulators & Stakeholders
slide-8
SLIDE 8

8

Engagement

Community Liaison Panel

slide-9
SLIDE 9

9

Overview

Is this new technology?

slide-10
SLIDE 10

10

Background

Types of storage in UK:

  • Depleted oil/gas fields
  • Reservoirs
  • Caverns:
  • Bedded salt strata

Preesall will use new purpose built caverns

Scheme Overview – What is it?

slide-11
SLIDE 11

11

Background

UK Gas Network Intermittent generation need expanding UK gas storage depleted by Rough closure 70% of UK storage lost 13 days down to 4 days

slide-12
SLIDE 12

12

Overview

Response to recent enquiries Will gas be stored in legacy brine wells? Can gas escape from the caverns? Can the gas pressure build up to a dangerous level? Will fracking effect the caverns? Is mercury waste stored in caverns?

slide-13
SLIDE 13

13

Overview

Response to recent enquiries Will gas be stored in legacy brine wells? A No gas will be stored in the legacy

  • brinewells. Gas will be stored in newly created

caverns specifically designed for gas storage

slide-14
SLIDE 14

14

Overview

Response to recent enquiries Can gas escape from the caverns? A Gas is stored in salt deposits because of its unique properties which prevent gas migrating:

  • Low porosity so there are no voids for gas to

migrate through

  • salt is self healing
slide-15
SLIDE 15

15

Overview

Response to recent enquiries Can the gas pressure build up to a dangerous level?

A

The pressure is controlled and monitored between maximum and minimum permitted levels The maximum pressure is 83% of overburden pressure The minimum is 30% of overburden pressure The cavern pressures are within the range of the pressures in the National Transmission System

slide-16
SLIDE 16

16

Overview

Response to recent enquiries Will fracking effect the caverns? A Seismic forces, whether from fracking or natural seismic events, will not affect the cavern stability. A seismic risk assessment has been undertaken by independent international experts

slide-17
SLIDE 17

17

Overview

Response to recent enquiries Is mercury waste stored in the Halite Energy caverns? A Mercury waste is reported to be stored within Brinewell 107 which is owned by NPL Estates.

slide-18
SLIDE 18

18

Construction Process

slide-19
SLIDE 19

19

Construction Process

Preesall UGS (DCO July 2015): “No authorised development shall commence until a written scheme setting

  • ut

all the stages

  • f

the authorised development has, after consultation with the highway authority, been submitted to and approved by the relevant planning authority.” “The authorised development shall not be carried out

  • therwise than in accordance with the approved

development plans.” (*) * Note s.4.2-4.6

slide-20
SLIDE 20

21

Stages of Authorised Development

Access Roads Higher Lickow Farm administration and security facility Brine Pipeline (On Land) Marine Brine Outfall Sea Wall Crossing Seawater Pump Station Pipelines Booster Pump Station Gas Compressor Compound Gas manifold and distribution pipelines Power Cables and River Wyre Crossings Interconnector Pipeline Metering Station Wellhead Compounds and Well Drilling Caverns Washing

slide-21
SLIDE 21

22

Stages of Authorised Development

Haul and Access Roads Work

slide-22
SLIDE 22

23

Stages of Authorised Development

Electricity Connection

slide-23
SLIDE 23

24

Stages of Authorised Development

Dock Water Supply

slide-24
SLIDE 24

25

Stages of Authorised Development

Marine Brine Outfall & Sea Wall Crossing

slide-25
SLIDE 25

26

Stages of Authorised Development

Wellhead Compounds

slide-26
SLIDE 26

27

Construction Process

From DCO Submission: Construction Report Nov 2011

Activity 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Preconstruction surveys and reports Basic Infrastructure Sea water supply Brine outfall Electricity supply NTS connector Gas compound Wellhead compounds etc Cavern washing Approvals & operation

slide-27
SLIDE 27

28

Environmental Stewardship

slide-28
SLIDE 28

29

Environmental Stewardship

  • Environmental commitments made within DCO

Application

  • Statements of Common Ground
  • DCO Requirements (Schedule 9 of DCO)
  • Deemed Marine Licence (Schedule 7 of DCO)
  • Environment Agency Discharge Consent
  • Environment Agency Abstraction Licence
  • Pre-construction surveys/investigations
slide-29
SLIDE 29

Environmental Commitments made within DCO Application

  • Environmental Statement
  • Habitats Regulations

Assessment

  • Landscape and Ecological

Management Strategy Plan (LEMSP)

  • Site Waste Management Plan
  • Travel Plan
  • Statement of Engagement of

Section 79(1) of the Environmental Protection Act 1990 Matters (Statutory Nuisances)

30

Environmental Stewardship

slide-30
SLIDE 30

Statements of Common Ground

  • Over 50 prepared
  • Topics Covered: Air Quality;

Archaeology and Built Heritage; Deemed Marine Licence; Ecology; Landscape; LEMSP; Noise & Vibration; Transport & Access; Water Quality, Sea Defences & Flood Risk

  • Agreed with: Wyre BC, Lancashire

CC, Natural England, Environment Agency, English Heritage, RSPB, Marine Management Organisation (and Cefas), Lancashire Wildlife Trust, Highways Agency

31

Environmental Stewardship

slide-31
SLIDE 31

DCO Requirements (Schedule 9)

  • Req 7 – European protected species
  • Req 8 – Ecological management scheme
  • Req 9 – Landscape scheme
  • Req 10 – Implementation & maintenance of

landscaping

  • Req 18 – Ground/surface water & pollution

prevention

  • Req 19 – Archaeology
  • Req 23 – Code of construction practice
  • Req 24 – Construction worker travel plan
  • Req 26 – Control of noise during construction &

maintenance

  • Req 27 – Control of noise during operational phase
  • Req 28 – Control of dust emissions
  • Req 29 – Protection of agricultural practice
  • Req 30 – Soil stripping, handling and storage
  • Req 37 – River Wyre crossings

32

Environmental Stewardship

slide-32
SLIDE 32

Deemed Marine Licence (Schedule 7)

  • Covers activities licensable under the

Marine and Coastal Access Act 2009

  • Agreement of Method Statements
  • Notification requirements
  • Reporting requirements
  • 11No. conditions prior to commencement
  • f licensable activities (e.g. marine

benthic and ecology habitats survey, Vessel Movement Plan, Construction Monitoring Plan, Written Scheme of Investigation)

  • 14No. conditions during construction of

the licensed works (e.g. best practice)

  • 4No. conditions following completion of

the licensed works (e.g. backfilling)

33

Environmental Stewardship

slide-33
SLIDE 33

Environment Agency Discharge Consent

  • Permits the discharging of trade effluent

(brine) 2.3km west of the coastline at Fleetwood into the Irish Sea

  • Informed by dispersion modelling (results

supported by recent Environment Agency modelling)

  • Exceedance limits on discharge volume,

rate, salinity, suspended solids, pH, tributyl tin, total cadmium and temperature

  • Requires ecological monitoring
  • Should discharge cause salinity, tributyl tin

and copper levels in the receiving waters to exceed the limits stated, the discharge will cease (and will not re-commence without the prior written agreement of the Environment Agency)

34

Environmental Stewardship

slide-34
SLIDE 34

Environment Agency Abstraction Licence

  • Permits the abstraction of water from

Fleetwood Fish Dock for the purposes of solution mining

  • Limits on maximum quantity of water to

be abstracted

  • Measuring and reporting requirements
  • 9No. additional conditions (e.g.

installation of a 1-2mm fish screen to prevent the entrapment, entrainment or impingement of fish and eels at the point

  • f abstraction)

35

Environmental Stewardship

slide-35
SLIDE 35

Pre-construction Surveys/Investigations

  • Pre-construction ecology surveys

➢Badgers ➢Bats ➢Barn owls ➢Otters ➢Water vole ➢Great crested newts (& other amphibians) ➢Arable weeds ➢Hedgerows ➢Trees ➢Marine benthic and ecology habitats

  • Pre-construction archaeological surveys
  • Pre-construction noise monitoring

36

Environmental Stewardship

slide-36
SLIDE 36

37

Questions and Answers