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Marine Renewable Energy

Marine Renewable Energy

CASE STUDY 1: DEPLOYMENT & RETRIEVAL - 1MW TIDAL TURBINE

Location: EMEC Tidal Test Site, Fall of Warness, Orkney,

Summer 2012, On-going

Scope of works:

Principal Contractor for on-going floating support and lifting services for Tidal Turbine.

The turbine foundation is located in an area of strong tidal currents, where the opportunity for deploying and recovering the turbine is restricted to periods of slack water. Deployment/Retrieval is a specialist marine operation requiring coordination between the vessel crew, ROV crew and the turbine crew.

Under this scope of work KML take overall responsibility for all aspects of deployment of the turbine, including lifting in and out of the water at the quayside, turbine lifts on the quayside for repositioning, deployment and retrieval at sea including dunk testing.

KMLs crane barge BD6074, installation & support vessel Severn Sea, and newly acquired Cougar ROV are used used on this project. 

  • Deployment and retrieval of dummy foundation
  • Mobilisation of Severn Sea for 1MW turbine
  • Dunk testing of 1MW turbine
  • Deployment and retrieval of 1MW turbine
  • Miscellaneous light construction associated to turbine installations

CASE STUDY 2: POWER TRAIN REMOVAL

Location: Ireland

Summer 2011

Scope of works:

To provide methodology, workboat and supervision to receive power-train units, lowered by personnel from structure, transport to shore and provide craneage for discharge to shore for lay-down or haulage.

This project involved the removal of 2 no. powertrains from a tidal energy converter and loading onto a multicat workboat at the high tidal energy location in Ireland. The power-trains were then safely transported from the work site to the port facility where KML organised lifting facilities to place them on road transport and secure them safely.

KML authored engineering and marine procedures to complete this work as part of the Construction Phase Plan (CPP) under CDM Regulations.

Compliance overview including but not limited to consideration of the COLREGS, Offshore Oil and Gas ‘Safety Case’ legislation, the Construction (Design and Management) regulations, the Health and Safety at Work Act, the Lifting Operations and Lifting Equipment Regulations, the Provision and Use of Work Equipment Regulations, the Diving at Work Regulations, the Electricity at Work Regulations, the Docks Regulations and the Merchant Shipping Act 1995.

Unique lift plans for powertrains. This includes full specific lift plans including MSRA in accordance with LOLER and International Offshore Industry Guidelines, including detailed CAD storyboards.

Marine procedures including:

  • Specification of vessels and assets; personnel planning and local skill base analysis
  • Station keeping and positioning plans
  • Electrical safety relationship management
  • Contingency and emergency management plans

The project was extremely successful and completed ahead of schedule. No departures from the management documents were required.

CASE STUDY 3: DEPLOYMENT & RETRIEVAL - 500KW TIDAL TURBINE

Location: EMEC Tidal Test Site, Fall of Warness, Eday, Orkney,

March 2009, 2012

Scope of works:

Principal Contractor for on-going floating support and lifting services. Supply specialist vessels, crew and ROV to support the deployment, retrieval, and maintenance of tidal turbine.

  • Overall Project and Safety Management
  • Supply vessel fitted with project specific equipment
  • Marine support for Dunk Tests
  • Carry out Turbine commissioning / deployment & retrieval

KML have successfully carried out this work for a number of years. In this developing industry, we have been able to continually improve methods, increase working time in extremely challenging conditions and in doing so, have reduced O&M costs to the developer. 

CASE STUDY 4: PRINCIPAL MARINE CONTRACTOR - HEAVY LIFT, LOGISTICS & SUBSEA DRILLING

Location: EMEC Tidal Test Site, Fall of Warness, Eday, Orkney,

March 2009

Scope of works:

Principal Marine Contractor and CDM principal contractor for drilling phase of turbine base installation.

KML Crane Barge ‘BD6074’ mobilised to Rosyth Docks, Scotland, to receive client’s 80te prototype tidal turbine, assisted client in wet tests of unit then loaded out,

Stability, sea fastening and transport of turbine from Rosyth to Orkney. Turbine discharged in Orkney and wet tests continued, including installation of dummy subsea foundation for deployment trials.

KML designed, built, warranty approved, installed and load tested specialist heavy-duty mooring system for Crane Barge ‘BD6074’ in 7-8 knot tidal flow and exposed location at EMEC Fall of Warness.

‘BD6074’ remobilised as drill barge with drill team BAM Nuttall Ritchies of Glasgow. Throughout working season 2009 KML successfully provided barge drill platform, support and towage craft and all marine services including: drill rig heavy lift at sea over-boarding and ROV-spotted landing at 40m subsea, and recovery.

Drilling successfully completed September 2009.

CASE STUDY 5: INSTALLATION SUPPORT - TIDAL TURBINE

Location: Northern Ireland

Spring 2008

Scope of works:

Supervision and execution of heavy lift, stability, sea-fastening and transport by barge of device “Control Pod” to installation site.  General Marine support in extremely challenging tidal conditions (7-8 knot flow)