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Challenges Presented by Brownfield Sites to Major Projects PowerPoint PPT Presentation


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Challenges Presented by Brownfield Sites to Major Projects. Berlin, Germany. Annraoi Caffrey, ESBI Project Manager & Finbarr Quigley, ESBI Senior Consultant. 30th March 2012. ESB International in brief…. A multi-disciplinary engineering, consultancy and O&M business 1,100 employees

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Challenges Presented by Brownfield Sites to Major Projects

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Challenges Presented by

Brownfield Sites to Major Projects

Berlin, Germany

Annraoi Caffrey, ESBI Project Manager & Finbarr Quigley, ESBI Senior

Consultant

30th March 2012


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ESB International in brief…

  • A multi-disciplinary engineering, consultancy and O&M business

  • 1,100 employees

  • Annual turnover approx €110m

  • Projects completed in 115 countries

  • Current operations in >20 countries

  • Wholly owned by ESB Group (Irish state-owned)

35 Year Track Record in International Consultancy


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ESB International - Locations


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ESB International - Locations


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ESBI Recent Projects

  • Dublin Bay Power, Ireland

  • 412MW CCGT

  • Commercial Operation 2002

  • Brown Field

  • Amorebieta, Spain

  • 755MW CCGT

  • Commercial Operation 2005

  • Green Field


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ESBI Recent Projects

  • Coolkeeragh, Northern Ireland

  • 400MW CCGT

  • Commercial Operation 2006

  • Brown Field

  • Marchwood, Southampton UK

  • 840MW CCGT

  • Commercial Operation 2009

  • Brown Field


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ESBI Recent Projects

  • Aghada, Cork, Ireland

  • 435MW CCGT

  • Commercial Operation 2010

  • Brown Field

  • Carrington, Manchester, UK

  • 860MW CCGT

  • NTP 2012

  • Brown Field


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  • Good infrastructure connection

    • Gas Transmission System

    • HV Grid

    • Transport Routes

  • Residual Site Risks

    • Contamination

    • Existing services and structures

    • Disruption to existing

      industrial stakeholders

  • Cooling

    • Existing Cooling Source

    • Reduced Capex

    • Environmental

  • Suitable for CCR/ S

    • Availability of land

Benefits vs Challenges of Brown Field

  • Good planning context

    • Reusing Brownfield Site

    • Industrial zoning

    • Visual impact

    • Regeneration

800-1500MW CCGT


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The Carrington Project


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Original Coal Fired Station


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WaterSource

Gas Supply

HV Substation

Site Overview


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Proposed Development


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Key Challenges Experienced

  • Route for Gas Pipeline

  • Existing Buried Structures

  • Contamination

  • Invasive Plant Species


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Routing of

Gas Pipeline


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Power plant site

Pipeline

  • 2.4km

  • Welded steel

  • 600mm dia

  • 19.1mm thick

  • 70barg

Carrington

Gas Supply


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1.2km


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Canal

Landfill

Culverts

Canal

Culvert


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Canal

Landfill

Culverts

Canal

Landfill

Culvert

Canal

Culverts


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Canal

Landfill

Culverts

Canal

Culvert


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Horizontal Directional Drill


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Horizontal Directional Drill

Ground Level

Entry

Culvert

Structure

Exit

30m

1200m long drill

Bedrock


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Pipeline Outcome

  • Financial Commitment prior to Financial Close

  • Engineering Resource Requirement

  • Extension of Develop Phase Programme

  • Pipeline detailed design contract

  • Proved viability of pipeline route

  • Detailed design available

  • Significant Saving on Pipeline Construction Contract relative to Design & Build

  • Risks addressed thus reducing Client’s exposure (time & cost)

  • Project Value Increased

Risks successfully addressed prior to award of fixed price construction contract


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Buried

Structures

- Identifying

- Removal

- Mapping


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Site Issues

  • Existing foundations supported on piles

  • Inadequate drawings of foundations

  • Very limited information on ground conditions

  • Contamination Issues

    • Localised hotspots

    • Japanese Knotweed

    • Asbestos

  • Existing HV cables and drains crossing the site


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Original Coal Fired Station


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Site Overview


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Solution Options

  • Option 1

  • Include in EPC Contract scope

  • Single all inclusive contract

Option 2

Prep work in advance of the EPC Contract

Client invests upfront to manage risk

  • Option 2 Selected with the following objectives:

  • Provide Information for EPC Contract Negotiation

  • Prepare Site for handover to EPC Contract


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    What we did?


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    Foundations more extensive than Desktop Study


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    Additional existing piles -Original estimate 3,500- Final total 5,579


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    Proven Methodology

    Risk Workshops

    Project Risk Logs

    Geotechnical Risk Log

    Lessons Learnt Reviews & Log

    Safety Workshops

    Zero LTI Goal

    Safety Initiatives

    Interactive Safety Workshops with Contractors

    High Level Steering Committee

    Contract Delivery


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    Buried Structures Outcome

    • Financial Commitment prior to Financial Close

    • Engineering Resource Requirement

    • Extension of Develop Phase Programme

    • Significant Saving on Cost relative to that proposed by EPC

    • Significant Variation in scope

    • Risk addressed thus reducing Client’s exposure (time & cost)

    • Proposed Design now Site Specific

    • Site Value Increased

    Risk successfully addressed prior to award of turnkey fixed price contract


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    Conclusion

    Experience

    Lessons Learned

    Project Delivery Methodology

    Advance Works

    Robust Project

    Risks mitigated

    Fixed price construction contracts


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    Thank You

    Any Questions?


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