International Atomic Energy Agency · International Atomic Energy Agency ... Horizon Nuclear Power Ltd (RWE/EoN Joint Venture) ... Typical Uprate Work Scope

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© 2011 Westinghouse Electric Company LLC. All Rights Reserved.

International Atomic Energy Agency 16th Meeting of the Technical Working Group

on Advanced Technologies for LWRs (UK LWR Activities)

Alan Palin Manager, Business Development Westinghouse Europe, Middle East & Africa (EMEA)

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Contents

National Status of the UK Programme

Applying New Technologies to existing plant

Impact of Fukushima

Questions

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National Status of the UK Programme

An update from July 2010

Sourced Material

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UK Perspective

• Between now and 2020 – 12GW of oil & coal closes as result

of Large Combustion Plant Directive – 7GW of nuclear closes from end of

Magnox and closure of 5 of the 7 AGRs

• Gap between predicted demand & supply

• Government Policy now supportive of new nuclear build

– New approach to licensing – Reliant on Utilities to fund

investment – Utilities pushing for higher carbon

prices to support investment in nuclear vs coal

Loss of capacity & carbon concerns => UK Government Policy of new nuclear build

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Nominated & approved sites 1.Bradwell, Essex,

• NDA 2. Hartlepool, Durham,

• EDF Energy 3. Heysham, Lancashire,

• EDF Energy 4. Hinkley Point, Somerset,

• EDF Energy 5. Oldbury, Gloucestershire,

• Horizon 6. Sellafield, Cumbria,

• NuGen 7. Sizewell, Suffolk,

• EDF Energy 8. Wylfa, Anglesey,

• Horizon

Sourced Material

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EDF Energy UK (EDF Energy/Centrica Joint Venture) 2 x 1600 MW EPRs for Hinkley 2 x 1600 MW EPRs for Sizewell 1st operating 2018, 4 by 2025 second tranche to follow

NuGeneration Ltd (Iberdrola/GDF Suez/SSE Joint Venture) Up to 3600MW operating by 2025 Technology to be decided

Horizon Nuclear Power Ltd (RWE/EoN Joint Venture) 6000 MW operating by 2025 Technology to be decided in 2011

New Build Plans for UK

Sourced Material

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Where are we now…

Justification: Completed October 2010

Electricity Market Reform: Consultation closed 11th March 2011

National Policy Statements:

Granted 18th July 2011

Fukushima: 11th March 2011

Weightmen Report:

Commissioned in end March 2011

Interim GDA: Conclusions, Expected Dec 2011

Investment approval for first plant: Expected 2012

Update on New Build since July 2010 ……

Sourced Material

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Applying New Technologies to Existing Plant

Power Up-rating in the UK – comparisons with Europe

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Typical Uprate Work Scope

NSSS Scope Fuel Safety Analyses Systems & Components

BOP Scope Systems & Components Design Change Packages Installation

T/G Scope HP Turbine upgrade/mods Generator Rewind/Replacement

Licensing Scope License Amendment Request FSAR, Tech Spec, etc

Environmental Impact State, Federal, Local

Grid Impact Studies Outage Planning Training, simulator, procedures,

etc

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Types of Power Uprates

Measurement Uncertainty Recapture (MUR) Power Uprate: 1%<X<2%

Taking credit for a way to reduce inaccuracy in feed water flow measurement hence more accurate calculation of power calorimetric

Stretch Power Uprate (SPU): 2%<X<7% Within the design capacity of the plant; Usually involves changes to

instrumentation setpoints but NOT major plant modifications

Extended Power Uprate (EPU): X > 7% EPUs require significant modifications to major BOP equipment (e.g., high-

pressure turbines, condensate pumps & motors, main generators and/or transformers)

MUR COMPLETED 34 Americas PWRs 5 European PWRs

2 Asian PWRs 1 in UK - Sizewell B

SPU COMPLETED 42 Americas PWRs 2 European PWRs

4 Asian PWRs

EPU COMPLETED 13 Americas PWRs 10 European PWRs

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Uprate Comparison

• Uprates provide additional generating capacity with relatively low site implementation

& licensing risk

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The impact of Fukushima

The Weightman Report and its impact on the AP1000

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Secretary of State for Energy and Climate Change, Rt. Hon Chris Huhne MP: “Safety is and will continue to be our number one priority. I am pleased that today’s report confirms that the UK’s current safety arrangements are working.”

Chief Nuclear Inspector, Dr. Mike Weightman: “The extreme natural events that preceded the accident at Fukushima – the magnitude 9 earthquake and subsequent huge tsunami – are not credible in the UK…But we are not complacent. No matter what the differences are, and how high the standard of design and subsequent operation of the nuclear facilities here in the UK, the quest for improvement must never stop.”

Interim report on Fukushima by the Chief Nuclear Inspector

Sourced Material

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UK GDA - Weightman Report

The Interim Weightman Report outlines 26 recommendations, it groups these recommendations into a number of sub categories including: - General Relevant to the Regulator Relevant to the Nuclear Industry Way Forward

Response on interim report requested by 15 June Westinghouse response has been provided

commenting on recommendations relevant to nuclear industry

Response will be made public, timing likely to align with issuance of final Weightman report

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Major Safety Advancements of AP1000 Event/Threats Response Summary

Events /Threats Westinghouse AP1000

Earthquakes and Floods

Seismic Design: AP1000 designed to withstand an earthquake that would happen once in every 10,000 years. Plants are being sited in seismically stable regions Robust: Designed to withstand other natural disasters: flooding, tornados, tsunamis, hurricanes.

Earthquakes and Floods

AP1000 can be safely shut down and maintained during a station blackout for 7 days. The advanced passive safety features rely on natural forces such as gravity, natural circulation, condensation and convection. The ultimate heat sink is the atmosphere. Power Sources Redundant safety-related DC batteries support safe shutdown for 72 hours (3 days). Two redundant 80 kw ancillary diesel generators provide cooling water to the

containment shell and spent fuel pool. Ancillary diesels can run for 4 days with no offsite support.

Two redundant 4 MW standby diesel generators can power equipment for 7 days with no offsite support (not required to cope with station blackout)

Water Sources Passive Containment Cooling Tank provides cooling to the containment shell for 72

hours Ancillary Storage Tank provides cooling to the containment shell and to the spent fuel

pool after 72 hours for a period for 4 more days

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Major Safety Advancements of AP1000 Event/Threats Response Summary

Events /Threats Westinghouse AP1000

Containment Integrity

Containment Design: The 44.5 mm (1¾”) steel containment is a high integrity steel pressure vessel surrounded by a shield building that protects it from missiles, including aircraft impact. Hydrogen Management: Battery powered hydrogen igniters & passive hydrogen recombiners prevent explosions

Spent Fuel Pool Integrity and Cooling

Structure: Spent fuel pool features 1+ m (3-5’) thick, heavily reinforced concrete structures lined with steel Makeup Water: Spent fuel will remain covered with water sources located in the spent fuel building for at least 3 days. Following 3 days, water is provided by the ancillary storage tank. Robust Building: Designed for protection against seismic events, natural disasters and aircraft impact.

Control Room Habitability

Heavily shielded room with a 72-hour air-pressurization system. Control room dose minimal

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Questions

Documents

International Atomic Energy Agency · International Atomic Energy Agency ... Horizon Nuclear Power Ltd (RWE/EoN Joint Venture) ... Typical Uprate Work Scope