The EPR design: the European reference

Transcription

1 The EPR design: the European reference Jean-Bernard Ville Executive Vice-President, New Builds June 25 th, London

2 1 EPR Design safety 2 EPR project delivery 3 A partnership-based approach Platts 7 th European Nuclear Conference June 25, p.2

3 CHRS (2x) x spreading compartment spray nozzles melt flooding via cooling device and lateral gap x passive flooding device in-containment refueling water storage tank x x water level in case of water injection into spreading compartment FL flow limiter EPR safety approach An accident is a complex series of events: NEED THE MEANS TO REMAIN IN CONTROL OF THE SITUATION, WHATEVER HAPPENS Emergency power sources Diversity (against common cause) Core catcher & Containment spray Complementarity (between active and passive systems) Redundancy (against single failure) Four safeguard divisions The EPR reactor is designed to resist exceptional events and prevent damage to the surroundings Platts 7 th European Nuclear Conference June 25, p.3

4 Imperative Imperative 1 1 RESISTANCE TO MAJOR HAZARDS Critical buildings Structural resistance Reactor building Safeguard division APC shell 1 Pre-stressed Concrete Containment Building Annulus 1,8 m Reinforced Concrete APC Shell Steel Liner Inside Outside BASEMAT APC shell & earthquake resistance Doors designed to resist external explosions & floods Pre-stressed concrete containment Steel liner Resistance to external (impacts) and internal hazards (leaks, high temperature ) Design robustness: the EPR design can be compliant with a vast variety of sites Platts 7 th European Nuclear Conference June 25, p.4

5 Imperative Imperative 2 1 ROBUSTNESS OF COOLING CAPABILITY Emergency injection system (water reserve in reactor building) Heat sink Alternate 1 2 (e.g. ocean) heat sink IRWST (1800m3) Robustness of cooling capability Water supply Tanks 400m 3 x4 Pump Emergency feedwater system (water reserve in safeguard building) 4 Fire fighting Tank (2600m 3 ) Pump In case of loss of main heat sink access 1,the EPR reactor can rely: On an alternate heat sink source 1 2 (against floods or earthquakes ) On significant protected water reserves: four EFWS 2 tanks 3 in the safeguards buildings a large fire fighting tank the IRWST in the reactor building The EPR design has multiple redundant and diverse access to water to cool the core Platts 7 th European Nuclear Conference June 25, p.5 1- or geographically diversified access for seaside sites 2- Emergency FeedWater System 3- In-containment Refueling Water Storage Tank

6 Imperative Imperative 2 1 ROBUSTNESS OF COOLING CAPABILITY Physical protection Robustness of cooling capability Emergency power Physical separation Redundancy & diversification SBO Diesels Diesels & fuel tanks housed in reinforced concrete buildings Earthquake resistant design Doors designed to resist external explosions & floods 2 separate buildings located on each side of the reactor building Deterministically impossible for both of them to be damaged by an external impact hazard (explosion, airplane crash ) Four main 100% redundant diesels: each with 72 hours autonomy at full load Two additional station blackout diesel generators (SBO): Fully diversified with 24 hours additional autonomy each 1 Batteries: 12h autonomy for critical systems 6 emergency diesels plus batteries: redundant, diversified and protected Platts 7 th European Nuclear Conference June 25, p.6 Note 1: 24h for OL3/FA3, autonomy dependant on site specific assessment

7 Imperative Imperative 3 1 PREVENTION OF ENVIRONMENTAL DAMAGE Long-term core melt stabilization Short-term cooling Long-term cooling The Core catcher protects the integrity of the containment basemat. It is designed to passively stabilize molten core: Passive valve opening Gravity-driven overflow of water Long-term core cooling is provided by the containment spray The grace period provided by the passive short term cooling allows ample time to recover active systems and ensure longterm stabilization Complementarity of active and passive systems for severe accident management Platts 7 th European Nuclear Conference June 25, p.7

8 The EPR design safety has been assessed positively in the frame of the so-called European «Stress tests» ASN The enhanced design ensures already an improved robustness with respect to the severe accident. In particular, this reactor has integrated, from the onset, specific design features to handle core melt situations and combination of hazards. STUK EPR reactor safety European stress tests assessment The safety systems of [the EPR reactor] OL3 are well designed to tolerate external events by applying adequate physical separation and protection against dynamic loads. Earthquakes and flooding are included in the design to ensure safety functions to a high level of confidence External events are comprehensively taken into account in the design [of the EPR reactor ] and the adequacy of the design has been demonstrated by PSA studies. Today, June 2012, TVO and STUK are not requesting any modifications to the EPR related to the Fukushima effects Platts 7 th European Nuclear Conference June 25, p.8

9 AREVA is strongly engaged in the UK market with: The ongoing Hinkley Point C project with NNB co The Horizon Nuclear Power development The NuGen project for the Moorside project EPR reactor safety UK EPR licensing status Licensing status: Interim Design Acceptance Confirmation (DAC) issued by the ONR on Dec 11 th 2011 To secure final DAC, AREVA and EDF must respond to 31 remaining open points 1/3 of the documents to be issued have already been transmitted by AREVA and EDF; half of the closures are anticipated to occur within next 3 months Final DAC is expected end 2012 / beg 2013 Platts 7 th European Nuclear Conference June 25, p.9

10 1 EPR Design safety 2 EPR project delivery»project status» Partnership-based approach» The value of experience Platts 7 th European Nuclear Conference June 25, p.10

11 Global leadership for the construction of Gen III+ reactors Percentage of completion in % (AREVA scope) Olkiluoto 3 82% complete (Supply of a turnkey power plant) Flamanville 3 60% complete (Supply of a Nuclear Steam Supply System) Taishan 1 & 2 70% complete (Supply of 2 nuclear islands) Platts 7 th European Nuclear Conference June 25, p.11

12 Olkiluoto 3 Progress update June 2012 OL3 Key Facts Concrete work completed Construction works : Civil works: completed Cabling: more than 1400km cabling laid down Piping: ~75% completed Primary circuit All main components installed Platts 7 th European Nuclear Conference June 25, p.12 I&C Delivery of electrical cabinets for Instrumentation & Control TI I&C cabinets installed and commissioned Licensing Master List for Operating License Application documentation delivered to TVO Commissioning Operators training ongoing on Full Scope Simulator Preparation of seawater injection in the cooling system Refueling machine introduced

13 Olkiluoto 3 moving towards completion: Simulator operational, fuel building ongoing September 11 Full Scope Simulator operational April 12 Refueling machine introduced in the Fuel Building Platts 7 th European Nuclear Conference June 25, p.13

14 Flamanville 3 Progress update June 2012 FA3 Key Facts Concrete work completed Reinforcement work completed awaiting concreting Installation of containment liner AREVA scope Engineering: ~100% completed Procurement: ~75% overall progress Licensing: Second batch of Final Safety Analysis Report issued in September 2011 Primary equipments: Successful completion of hydraulic testing of the 4 steam generators Piping: erection ongoing since beg % of isometrics issued I&C: ASN confirmed safety of the I&C architecture (April 2012) Installation: EBS pumps installed in April 2012 Civil works outside AREVA scope External containment at 40m: 1 lift remaining Note: all percentages (%) in terms of value; Platts 7 th European Nuclear Conference June 25, p.14

15 Flamanville 3 Nuclear Building installation works ongoing June 11 Introduction of the four SIS accumulators in the reactor building February 12 Steam Generators bunkers in the reactor building Platts 7 th European Nuclear Conference June 25, p.15

16 Taishan 1 & 2 Progress update June 2012 Taishan 1 Taishan 2 Concrete work completed Reinforcement work completed awaiting concreting Installation of containment liner Taishan 1&2 Key Facts AREVA scope Procurement: ~89% orders made Engineering: ~76% completed Main components: Unit 1 RPV installed in June 12 Steam Generators and Pressurizer delivered on site Polar Crane testing: done Delivery of the first I&C cabinets Outside AREVA scope Unit 1: Dome lifted Piping prefabrication started by the customer based on AREVA design More than people are working on the site everyday Note: all percentages (%) in terms of value; Platts 7 th European Nuclear Conference June 25, p.16

17 Taishan 1 Dome lifted, RPV installed Oct 11 Dome lifting June 12 Reactor Vessel installation Platts 7 th European Nuclear Conference June 25, p.17

18 1 EPR Design safety 2 EPR project delivery» Project status» Partnership-based approach» The value of experience Platts 7 th European Nuclear Conference June 25, p.18

19 AREVA has started to build a new UK supply chain for the construction of the EPR in UK Footprint strategy developed with the support of Nuclear Advanced Manufacturing Research Centre Some major partnerships established in the frame of UK projects : Rolls Royce Manufacturing of components for UK EPR with sharing of knowledge and skills Collaboration on potential recycling projects in the UK Collaboration on international projects, Balfour Beatty Vinci HNP Delivery Team - Civil Construction Work Many UK Companies already identified for Engineering, Equipment and Construction either for EPR or maintenance operations: Over 400 UK companies registered on the Areva s potential supplier list 60 UK suppliers ready to be involved in the next EPR projects 38 companies pre-qualified (Thomson Valves, Ultra electronics, SPX,..) 22 companies qualified, having already business with Areva for New Builds (Weir Group, Darchem,..) and operations (Babcock international, Doosan Power,..) Platts 7 th European Nuclear Conference June 25, p.19

20 Procurement strategy for Hinkley Point C Up to 40 Equipments rolled in 20+ RFQs starting from 2012 to secure Project Planning concerning long lead items Pressurizer Relief Tank Accumulator Volume Control tank Reactor coolant Tank Large High pressure Valves Large low pressure valves Small valves Primary support CVCS high pressure cooler CVCS regenerative HE Suction lines and boxes SS piping & fittings RIS pumps Canned pumps incl. drive RBS pumps LHSI Heat Exchanger Phase Separator Process Drain Tanks Process Drain NAB Relay Tank Core catcher equipment This is just the beginning. Further RFQs to be launched in 2013 Platts 7 th European Nuclear Conference June 25, p.20

21 AREVA and the Czech industry A long term partnership More than 1Bn Czech Crowns ordered to the Czech industry in the past 3 years Feb 12 Signature ceremony between TS Plzen and AREVA for a forging press and manipulator order Platts 7 th European Nuclear Conference June 25, p.21

22 AREVA and the Czech industry growing everyday To be integrated into AREVA s supply chain opens the way to opportunities worldwide in nuclear and renewables. E.g. : Best Drilling Chemicals MORAVIA products chosen for AREVA mining sites in Kazakhstan Mar 12 Signature ceremony between 14 Czech companies and AREVA in Praha Platts 7 th European Nuclear Conference June 25, p.22

23 1 EPR Design safety 2 EPR project delivery» Project status» Partnership-based approach» The value of experience Platts 7 th European Nuclear Conference June 25, p.23

24 The value of Experience: Knowledge management A mature field experience consolidation process A systematic process There are more than 1600 Experience feedbacks in the data base coming from current projects and our work on currently operating plants well established in the company: In 2011 alone, around 1 Experience feedback per day has been captured This unique project delivery experience has allowed AREVA to improve on all aspects of project execution Project management and organization Design Procurement Construction Design 44% 18% Construction 11% Procurement Experience feedbacks by Discipline 27% Project management & organization Platts 7 th European Nuclear Conference June 25, p.24

25 Heavy component delivery for Taishan: continuous in-house capabilities improvement Y1 Y2 Y3 Y4 Y5 (# months) 70 ~5y 60-40% 50 Tube sheet and lower shell 40 ~3y OL3 Shells subassembly Pressure boundary & lower part sub-assembly Hydraulic tests & preparation OL3 TSN Tube sheet and lower shell TS1 Shells subassembly Pressure boundary & lower part sub-assembly Hydraulic tests & preparation Source : AREVA, average of the four Steam Generators for each unit Apr 12 First two steam generators delivered on site Platts 7 th European Nuclear Conference June 25, p.25

26 The value of experience: Construction Illustration: Concrete slab one-step pouring Improvement Illustration Context Thick concrete slab (4m at FA3 and TSN) One-step pouring challenging Two-step pouring at FA3 Improvement One-step pouring method validated at Taishan thanks to temperature control Use of ice Use of integrated piping Use of a heating cover CGNPC One-step pouring Gain Construction schedule: 1 month shorter Concrete temperature check This improvement was made possible thanks to our Chinese partners CGNPC Platts 7 th European Nuclear Conference June 25, p.26

27 The value of experience: Construction Illustration, from OL3 to TSN: first main milestones Construction duration (# months) Dome lifting Slab +1,5m Start of inner containment Gusset pouring 1 st concrete OL TSN1 Platts 7 th European Nuclear Conference June 25, p.27

28 The value of experience: Summary Engineering Engineering hours for nuclear steam supply system - 60 % Construction Construction time from first concrete to dome lifting - 50 % Procurement Average delivery time - 65 % Global Overall project delivery time (from first concrete to fuel loading) - 40 % Platts 7 th European Nuclear Conference June 25, p.28