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Energy Efficiency Considerations in the Design of the Southern Seawater Desalination Plant

Energy Efficiency Considerations in the Design of the Southern Seawater Desalination Plant. SSDP. Electrical Consumption. Stage 1 Energy Forecast 24.673 MW and 187.876 GWh /year. Stage 2 Energy Forecast 52.556 MW and 401.873 GWh /year. Procurement Process.

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Energy Efficiency Considerations in the Design of the Southern Seawater Desalination Plant

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  1. Energy Efficiency Considerations in the Design of the Southern Seawater Desalination Plant

  2. SSDP

  3. Electrical Consumption • Stage 1 Energy Forecast 24.673 MW and 187.876 GWh/year. • Stage 2 Energy Forecast 52.556 MW and 401.873 GWh/year

  4. Procurement Process

  5. Key Elements for Alliance Development • Each bidder paid a sum determined by the Corporation • Facilities Engineer and Constructor selected • Basis for Design and Construct • Basis for Operations and Maintenance (25 years) • Alliance Agreement • They all stress ‘whole of life’ • Embedded staff • Engagement / Technical Presentation • Commercial negotiations • Final presentation after bids received

  6. Evaluation • Submission included • Engineering Summary Report • Draft O&M Plans • D&C Budget • 25 year O&M Budget including asset replacement. • Agreement • Technical Review • Normalisation • Most likely WOL outcome

  7. Commercial Drivers for WOL • Rigid selection process – the right partners • Competitive bid – embedded assistance • Evaluation on WOL – using Owners knowledge • Long term O&M commitment (25 years) • Risk / Reward regime in O&M – 50/50

  8. Alliance Phase • Lessons learnt from losing bid • Lessons learnt from evaluation • Embedded key staff • Design review • Procurement review • Emphasis on WOL and Sustainability

  9. Some energy outcomes • Tunnelling – optimise gravity; • RO Design – split / hybrid • Extensive use of VSD’s • Best available Energy Recovery System • Gravity Discharge of Brine • Sustainability assessment for procurement • Modified DWPS design for Stage 2

  10. Advantages of Split / Hybrid Pumping Pressures = energy

  11. Questions ? ? ?

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