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Rev Prepared Sign Off Checked Sign Off Approved Sign Off Date of Issue Comments
1 F. Johnson
I. Sargent
E. Rollings
19/02/2015
2 F. Johnson
I. Sargent
E. Rollings
01/04/2015 Consultation response. Minor spelling and grammar changes. Removal of consultation table.
Construction Method Statement: HDD Marine Works Page 1 of 26
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
MeyGen Tidal Energy Project Phase 1
Construction Method Statement:
HDD Marine Works
This document contains proprietary information belonging to MeyGen Ltd. and/or affiliated companies and shall be used only for the purpose for which it was supplied. It shall not be copied, reproduced, disclosed or otherwise used, nor shall such information be furnished in whole or in part to third parties, except in accordance with the terms of any agreement under which it was supplied or with the prior consent of MeyGen Ltd. and shall be returned upon request.
Project Title/ Location MeyGen Tidal Energy Project, Phase 1a. Inner Sound.
Date: 01/04/2015
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 2 of 26
Table of Contents
Executive Summary ................................................................................................................ 3
1 Introduction .................................................................................................................. 4
2 Scope of Construction method statement ................................................................... 5
3 Communication, Roles and Responsibilities ............................................................... 6
3.1 Responsibilities and Ownership ....................................................................................... 6
3.2 Organisation Chart and Reporting ................................................................................... 6
3.3 MeyGen - Ecological Clerk of Works ............................................................................... 8
3.4 Principal Contractor – James Fisher Marine Services ..................................................... 8
3.5 Contractors .................................................................................................................... 10
3.6 Communication .............................................................................................................. 11
3.7 Reporting ....................................................................................................................... 12
3.8 Training .......................................................................................................................... 13
4 Programme ................................................................................................................ 14
5 Construction Methods and Procedures ..................................................................... 15
5.1 HDD Works .................................................................................................................... 15
5.2 HDD Marine Works ........................................................................................................ 16
5.3 Environmental Mitigation ................................................................................................ 19
6 Emergency Preparedness and Response ................................................................. 22
7 Licences and Legal Requirements ............................................................................ 23
8 Linkages with Other Strategies and SHE Management Systems ............................. 23
9 CMS Review and Consultation .................................................................................. 23
10 List of Abbreviations .................................................................................................. 25
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 3 of 26
EXECUTIVE SUMMARY
This Construction Method Statement (CMS) has been prepared by MeyGen Ltd. to set out the proposed method for discharging the Condition 9 of the Section 36 Consent for the Development.
The document details the construction methods proposed for the Development, how construction related mitigation detailed in the Environmental Management Plan is to be delivered, the construction procedures and good working practices for installing the Development, how this document integrates with the wider environmental management of the Development, and how communication will be maintained between the Principal Contractor and MeyGen Ltd. on this Development.
The CMS presented within this document is to satisfy Condition 9 and enable construction of the Development to progress, subject to the CMS being implemented.
The CMS will be submitted to the licensing authority and consulted on by SNH, SEPA, MCA, the Planning Authority, NLB, and any such other advisors as may be required at the discretion of the Scottish Ministers, and will be used, where appropriate, to inform the discharge of other Conditions within the Section 36 Consent which refer to it.
THIS DOCUMENT ONLY CONSIDERS HDD MARINE WORKS. FURTHER CONSTRUCTION WORKS WILL BE DOCUMENTED IN SEPARATE CMS SUBMITTED FOR CONSULTATION AND APPROVAL PRIOR TO THAT PHASE COMMENCING.
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 4 of 26
1 INTRODUCTION
The MeyGen Tidal Energy Project Phase 1 (“the Development”) received consent under Section 36 of the Electricity Act 1989 from the Scottish Ministers on 9th October 2013 (“the S.36 Consent”). This Construction Method Statement (CMS) is prepared to enable Condition 9 of the S.36 Consent (“the Condition”) to be discharged. Condition 9 states:
The Company must, prior to the Commencement of the Development, submit to the Scottish Ministers a Construction Method Statement (“CMS”), in writing, endorsed by the Ecological Clerk of Works, as referred to in Condition 10 of this consent, to the Scottish Ministers for their approval, following consultation with SNH, the Scottish Environment Protection Agency, the Maritime and Coastguard Agency, the Planning Authority, Northern Lighthouse Board, and any such other advisors as may be required at the discretion of the Scottish Ministers. Unless otherwise agreed in writing by the Scottish Ministers, construction of the Development must proceed in accordance with the approved CMS. The CMS must include, but is not limited to, the following information: a) Commencement dates; b) Working methods including the scope, frequency and hours of operations; c) Duration and Phasing Information of key elements of construction, for
example– turbine structures, foundations, turbine locations, inter-array cabling and land fall cabling;
d) Details of the location of the turbines, grid export cable(s), method of installation (including techniques and equipment) and depth of cable laying and cable landing sites;
e) Details of mitigation measures to prevent adverse impacts to species and habitats during construction;
f) Details of how all contractors and sub-contractors will be made aware of environmental sensitivities, what requirements they are expected to adhere to and how chains of command will work;
g) Confirmation of reporting mechanisms used to provide Scottish Ministers and relevant consultees with regular updates on construction activity, including any environmental issues encountered and how these have been addressed;
h) Vessel specification, routing, including location of vessel ports; and i) Pollution prevention measures including contingency plans.
The CMS must, so far as is reasonably practicable, be consistent with the Environmental Management Plan, the Project Environmental Monitoring Programme, the Vessel Management Plan and the Navigational Safety Plan.
Reason: To ensure the appropriate construction management of the Development, taking into account mitigation measures to protect the environment and other users of the marine area.
This document sets out the proposed CMS that MeyGen Ltd, intends to undertake, to allow the Condition to be discharged.
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 5 of 26
2 SCOPE OF CONSTRUCTION METHOD STATEMENT
Phase 1a of the Development is a 6MW, 4 tidal turbines initial phase to be installed and operatives under the restriction placed on the Development by Condition 2 of the S.36 Consent.
This document is the CMS for the marine works associated with the Horizontal Directional Drilling (HDD) Works for Phase 1a only (“HDD Marine Works”).
Given the Phase 1a programme for construction works associated with Phase 1a it has been agreed with the licensing authority that the CMS and other related consent documents for the installation of the Phase 1a infrastructure (4 x Tidal Turbine Generators (TTG), 4 x Gravity-base Turbine Support Structures (TSS) and Turbine Subsea Cables (TSC) can be submitted at a later date “the Construction Works”. MeyGen Ltd. will produce and update relevant documents for these construction works; these will be submitted and get approval prior to commencement of these works.
The CMS forms part of a suite of documents related to the consent conditions that MeyGen Ltd. seek to discharge:
Environmental Management Plan (EMP) (S.36 Consent, Condition 11) including Marine Pollution Contingency Plan (Marine Licence, Condition 3.2.13), Reporting Protocol for the Discovery of Marine Archaeology (S.36 Consent, Condition 16);
Vessel Management Plan (VMP) (S.36 Consent, Condition 14); and
Navigation Safety Plan (NSP) (S.36 Consent, Condition 17).
The CMS is in accordance with the construction methods assessed in the Environmental Statement (ES) and Supplementary Environmental Information Statement (SEIS) and includes details of how the construction related mitigation steps documented in the EMP are to be delivered. The EMP commits MeyGen Ltd. to safeguarding the environment through the identification, avoidance and mitigation of the potential negative environmental impacts associated with the development, construction and operation of the tidal array. The CMP will be an integral element of the EMP.
The CMS contains the following sections:
Roles and Responsibilities;
Programme;
Construction Methods and Procedures (including mitigation);
Emergency Preparedness and Response;
Licences and Legal Requirements;
Linkages with Other Conditions;
Linkages with Other Strategies and SHE Management Systems;
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 6 of 26
CMS Review and Consultation; and
Technical Appendices Containing Detailed Construction Methodologies.
3 COMMUNICATION, ROLES AND RESPONSIBILITIES
This section details the project team roles, responsibilities and lines of communication during the construction and operation of the Development.
3.1 Responsibilities and Ownership
The Principal Contractor (PC) will have the ultimate responsibility for ensuring the implementation of the CMS.
The Ecological Clerk of Works (ECoW) will provide quality assurance and approval of any version of the CMS.
Any updates to the CMS by the PC will require the ECoW to check compliance with current legislation, consent conditions and related documents. Updated CMS will then be submitted to Scottish Ministers for approval.
3.2 Organisation Chart and Reporting
The organisational chart for the HDD Marine Works is below in . This includes how communication as part of the CMS will be conducted in normal working procedures and in the case of emergencies.
The organisation chart presents the key interfaces, lines of communication and responsibilities with regards to the flow of requirements and provision of mitigating actions across the HDD Marine Works.
Details are provided in the Table 1 below for contacts relevant to the delivery of this plan. These details may change and the CMS will be updated when necessary.
Name Role Organisation Telephone Mobile
Ian Sargent Project Manager
James Fisher Marine Services
01565 658812 +447584 293680
Stan Groundwater
Marine Coordinator
James Fisher Marine Services
01565658824 +44 7747 843712
Tony Blackshaw HSE Advisor James Fisher Marine Services
01565 658817 +447824 150124
Ed Rollings ECoW MeyGen Ltd +441316599662 +447825 414402
Fraser Johnson Marine Package Manager
MeyGen Ltd +441316599672 +447787 518373
Table 1 Contact Details
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 7 of 26
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onsible for:
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environmencessfully imp
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Marine Work
struction act
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and actual
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0-HSE-001onMethodS
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Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 14 of 26
Any person working on the site/vessel will be competent and trained sufficiently to undertake their work in a safe and efficient manner. Each Contractor will ensure that their personnel maintain the necessary level of competence for their work & will maintain the training records on site & make them available for review and audit.
Training Target Persons Induction (which will include environmental aspects such as environmental sensitivities and controls, pollution prevention, waste management, emergency preparedness and response and include shipboard operations under STCW requirements)
All persons attending Site / Vessel (Site / Vessel personnel, contractors on Site / Vessel, and visitors)
Environmental Toolbox Talks Toolbox talks will be carried out at a minimum of one per week appropriate to the construction works being carried out on Site / Vessel at that time. All persons carrying out work on site (site personnel, contractors on site) shall attend.
Environmental Bulletins / Legislation Briefings / Best Practice Briefings
All persons carrying out work on Site / Vessel (Site / Vessel personnel, contractors on Site / Vessel) shall attend.
Job specific training e.g. IOSH Working with Environmental
Responsibilities / IOSH Managing Environmental Responsibilities.
Use of Pollution Prevention Equipment. Site Waste Management.
As identified for personnel with environmental responsibilities
Project specific information, including relevant elements of: the EMP, CMS, NSP, VMP Consent Conditions
Briefed out and available for reference to all Site / Vessel staff.
Table 3 Training
Any person working on the Site / Vessel will be competent and trained sufficiently to undertake their work in a safe and efficient manner. Each Contractor will ensure that their personnel maintain the necessary level of competence for their work & will maintain the training records on site & make them available for review and audit. Records of training will be maintained and made available for inspection.
4 PROGRAMME
The high level programme for the HDD Marine Works in shown in Figure 2. The Programme is subject to change and will be regularly updated during the course of the Development.
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 15 of 26
Figure 2 HDD Marine Works Programme
5 CONSTRUCTION METHODS AND PROCEDURES
5.1 HDD Works
4 x HDD Bores are to be drilled from the onshore Ness of Quoys Power Conversion Centre to target exit locations on the seabed (Figure 3). The HDD bores are drilled using at 16’ (406mm) drill bit. As the drilling is undertaken, the exact location of the drill head is monitored as it proceeds along its path and provide real-time information as to its location and depth. This will be achieved using a Real-Time Constant Rate Gyroscope based guidance system which is impervious to magnetic interference.
During the drilling process, drilling fluid (bentonite mud) is pumped down the inside of the drill string where it cools the guidance system and drilling motor. The drilling fluid then flows out of the drill bit via nozzles and flushes drilled cuttings back to surface as it flows up the annulus. The drilling fluid also lubricates and supports the borehole. Before the drill is punched out onto the seabed the drill string will be pulled from the bore and re-run performing a ‘wiper trip’ to condition the drilling mud and remove cuttings from the bore. When the drill punches out onto the seabed drilling muds will immediately stop cycling; a small amount of bentonite and cuttings will be released into the marine environment (bentonite will flocculate on contact with salt water).
As described in the EMP (Marine Pollution Contingency Plan) a small amount of bentonite drilling mud and cuttings will be released into the marine environment. As stated in Marine Licence Condition 3.1.9 any drill cuttings associated with the use of water-based drilling muds situated within the outer boundary of the works need not be removed from the seabed.
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0-HSE-001onMethodS
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0-HSE-001onMethodS
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thods are r
AREDNESS
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0-HSE-001onMethodS
Page 22 o
ng vessels
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of 26
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Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 23 of 26
Post incident reporting Training
7 LICENCES AND LEGAL REQUIREMENTS
Licence / Consent Legislation Granted
Section 36 Consent Electricity Act 1989 09/10/2013
Marine Licence (licence number 04577/14/0)
Marine (Scotland) Act 2010 31/01/2014
Decommissioning Programme Energy Act 2005 xx
Table 4 Consent
8 LINKAGES WITH OTHER STRATEGIES AND SHE MANAGEMENT SYSTEMS
The NSP complies with the Principal Contractor’s Construction Phase Health and Safety Plan (under the Construction (Design and Management) Regulations 2007) and their Health, Safety and Environment Manual.
9 CMS REVIEW AND CONSULTATION
Under Condition 9 of the Section 36 the CMS will be reviewed and commented on by the licensing authority and SNH, SEPA, MCA, NLB, the planning authority and any other such advisors that may be required at the discretion of the Scottish Ministers. The CMS must be approved by the licensing authority.
The CMS will be submitted to the licensing authority for distribution to the stakeholders and for approval.
Any changes the CMS deemed necessary (working methods or procedures) must be reviewed and approved by the ECoW before it is submitted for approval to the licensing authority (Figure 5).
Version control will be conducted by the revision review block on the front page of the CMS.
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 24 of 26
Figure 5 CMS Change Process
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 25 of 26
10 LIST OF ABBREVIATIONS
Abbreviation
CDM Construction (Design and Management) Regulations 2007
CMS Construction Method Statement
COSHH Control of Substance Hazardous to Health
ECoW Ecological Clerk of Works
EIA Environmental Impact Assessment
EMP Environmental Management Plan
ERCoP Emergency Response Co-operation Plan
ERP Emergency Response Procedures
EPS European Protected Species
ES Environmental Statement
HDD Horizontal Directional Drilling
HSE Health, Safety and Environment
IOSH Institute of Occupational Safety and Health
JNCC Joint Nature Conservation Committee
NSP Navigation Safety Plan
MCA Maritime Coastguard Agency
MHWS Mean High Water Springs
ML Marine Licence under the Marine (Sotland) Act 2010
MLWS Mean Low Water Springs
MMO Marine Mammal Observer
PC Principal Contractor – James Fisher Marine Services
Construction Method Statement: HDD Marine Works
MEY-1A-40-HSE-001-D-ConstructionMethodStatementHDD
Page 26 of 26
PEMP Project Environmental Monitoring Programme
RAMS Risk Assessments and Method Statements
SAC Special Area of Conservation
SCIMS Seal Corkscrew Injury Monitoring Scheme
SEIS Supplementary Environmental Information Statement
SEPA Scottish Environment Protection Agency
SHESQ Safety, Health, Environment, Security and Quality
SNCA Statutory Nature Conservation Agency
SNH Scottish Natural Heritage
SPA Special Protected Area
STCW International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978
S36 Section 36 of the Electricity Act 1989
TSC Turbine Submarine Cable
TSS Turbine Support Structure
TTG Tidal Turbine Generator
VMP Vessel Management Plan