Potential New Development: Oldbury Nuclear Power Station – Chris Pearce

1. A UK company of E.ON and RWE
Nuclear New Build at Oldbury
Chris Pearce – Lead Mechanical Engineer (CI)
Severn Estuary Forum
23rd September 2011

2. A UK company of E.ON and RWE
Agenda
• Horizon Nuclear Power
• Development plans for Oldbury
• Interactions with the Estuary
• Questions

3. A UK company of E.ON and RWE
Horizon Nuclear Power
• Safety First culture
• Formed in January 2009 – a 50:50 joint venture between E.ON UK
and RWE npower
• Head office in the Gloucester Business Park
• Partnership of two experienced nuclear operators
• Mission to develop around 6,000MW of new nuclear capacity by
2025. At least £15bn investment.

4. A UK company of E.ON and RWE
Wylfa
Gloucester
Oldbury
Site Locations

5. A UK company of E.ON and RWE
Main activities:
• Environmental studies
• Site Development
‒ Cooling Tower BAT
‒ Thermal Plume Modelling
‒ Transport / MOLF studies
‒ Flood Risk Modelling
• Working arrangements (PPA, SWoG)
• Community engagement
Programme: phased site development (Wylfa then Oldbury)
• Resources (people, funds, regulatory effort)
• Lessons learned and optimised overall schedule
Development at Oldbury

6. A UK company of E.ON and RWE
Oldbury – Site Location

7. A UK company of E.ON and RWE
Oldbury
Indicative Layout
• Based on twin Areva EPR
reactors
• CT BAT assessment
– Reduce visual impact by
clustering towers
– Shield residences from
CT noise
– Indicative settling system
solution
• Very illustrative!

8. A UK company of E.ON and RWE
• “Indirect” cooling requirement – Cooling Towers
• “Make-up” from existing tidal reservoir
• “Purge” to main river channel
• Sediment settling system
• Number of cooling towers (3 or 4)
• Cooling Tower Options Study
– Visual Impact
– Capital cost & efficiency/running cost
– Maintenance costs
– Reliability/availability
– Noise
– Sustainability
Oldbury – Cooling System

9. A UK company of E.ON and RWE

10. A UK company of E.ON and RWE

11. A UK company of E.ON and RWE
• Royal Haskoning
• TUFLOW
• Overtopping – direct and waves
• Breaching
• Three return periods (AEPs)
• 1 in 200 yr (0.5% AEP)
• 1 in 1,000 yr (0.1% AEP)
• 1 in 10,000 yr (0.01% AEP)
• Climate change impacts
• Sea level rise - Defra/PPS25 rates for
SW region vs. UKCP09
• Wave height increases – Defra PPS25
• Storm surges
• Tsunami must be considered but likely
bounded by tidal / storm events
Flood Risk Modelling

12. A UK company of E.ON and RWE
Questions?