Fast Neutron Reactors Sustainable Development · Fast Neutron Reactors & Sustainable Development...
Transcript of Fast Neutron Reactors Sustainable Development · Fast Neutron Reactors & Sustainable Development...
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1FR09 December 7th, 2009, Kyoto
Fast Neutron Reactors&
Sustainable Development
Jacques BOUCHARDChairman of the Generation IV International Forum (GIF)
Advisor to the Chairman of the French CEA
International Conference onFast Reactors and Related Fuel Cycles
FR09December 7th – 11th, 2009, Kyoto, Japan
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2FR09 December 7th, 2009, Kyoto
The first build
EBR 1(USA, Idaho)
� 1951 : the first fast neutron reactor and the first nuclear electricity production
1950s : Nuclear Electricity
« EBR 1 lits Arco »
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3FR09 December 7th, 2009, Kyoto
The CREYS MALVILLE NPP
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4FR09 December 7th, 2009, Kyoto
The History of Fast Reactors• Fermi: The vision to close the fuel cycle
• 50’s: First electricity generating reactor: EBR-I
• 60-70s: Expected Uranium scarcity – significant Fast Reactor programs
• 80’s: Decline of nuclear – Uranium plentiful
→ USA (& others): once through cycle & repository→ France, Japan (& others): closed fuel cycles to solve waste
issue
• Late 90’s : Rebirth of closed cycle research and development for improved in the US waste management
• Now: Long term energy security and the role of nuclear
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5FR09 December 7th, 2009, Kyoto
The Generation IV International Forum4th Generation Nuclear Systems forsustainable energy development
E.U.
ChinaChina
RussiaRussia
– Technical maturity around 2030
– Steady progress• Economic Competitiveness• Safety and reliability
– Significant progress :• Waste minimisation• Resource saving• Security : non proliferation, physical protection
– Opening to other applications :• High temperature heat for industry• Hydrogen, drinking water
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FR09 December 7th, 2009, Kyoto
A Global Solution
-Fast Neutron Reactors
-Closed Fuel Cycle,
-Full Recycling of the Actinides
Uranium Supply will no more be a problemwhatever its priceThe existing depleted uranium that is stored today in France is worth 5000 years of the country current nuclear production.
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7FR09 December 7th, 2009, Kyoto
The Fuel Cycle of 4th Generation Reactors
R TUdep
FPU Pu MA
R TUdep
MAU Pu
FPR TUdep
FP MAU Pu
Homogeneous Recycling (GenIV)
Heterogeneous Recycling
Recycling U Pu only
� Resource Saving� Waste Minimisation� Proliferation Resistance
Various Options to be tested by the Prototypes :
50 times more electricitywith same amountof natural Uranium
Plutonium recycling Spent Fuel
Direct disposal
Uranium Ore (mine)
Time (years)
Relat
ive ra
dio
toxici
ty
P&T of MA
Pu +MA +FP
MA +FP
FP
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8FR09 December 7th, 2009, Kyoto
Superphenix (Creys-Malville)
Superphenix and the EFR project
Superphenix:Industrial prototype (1200 MWe),
started in 1985,shutdown in 1998
EFR Project (European Fast Reactor)
– 1500 MWe– Integrated Concept
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9FR09 December 7th, 2009, Kyoto
EFR vs SPX1: Comparison of specific steel weight in t/kWe
EFR Economic evaluations (1998)
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10FR09 December 7th, 2009, Kyoto
Sodium = first choice
� High conductivity� Liquid from 98°C to
883°C (at 1 bar)� Low viscosity� Compatible with
steels� Industrial fluid� Low cost
Lead is a variant
� No reactivity with air and water
� Good coolant
But reactive with air and water, and opaque
But corrosive, toxic, very dense, opaque (and solid…)
Helium is an alternative
� No temperature constraints
� No phase change� Inert� Transparent
But low density, high pressure
What coolant for fast neutron reactors?
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11FR09 December 7th, 2009, Kyoto
PrimaryContainment
Intermediatecircuit (sodium)Pool Loop
Sodium coolant: the concepts
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12FR09 December 7th, 2009, Kyoto
SUPERPHENIX
PHENIX
The integrated conceptPhenix and Superphenix
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13FR09 December 7th, 2009, Kyoto
Very good operationExtensive Feedback Experience: MOX fuel, closed cycle, technology (SG, IHX)Demonstration of ISI and reparabilityTransmutation of minor actinidesClosing down this year
PhenixPhenix (Marcoule)
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14FR09 December 7th, 2009, Kyoto
The Russian Reactor BN 600
Beloyarsk Plant, 600 MWe Reactor, integrated concept, sodium-cooledStarted in 1980, still operating
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FR09 December 7th, 2009, Kyoto
PBFR (India)500 MWe, 2010
CEFR (China) 65 MWth, 20 MWe
2010
Other Pool Type Reactors
BN600, 1980BN800, 2012
(Russia)
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FR09 December 7th, 2009, Kyoto
SG-HX unit, 600 MWNa/Pb-Bi/H2OΦ~4m X h~11m
« Ultra-compact »3-fluid component
(SG-HX)
(sodium / X / water)IntermediateIntermediate circuit circuit
designdesign
SG SG materialsmaterialsfor T > 550°Cfor T > 550°C
Pressure Pressure choicechoice
Na X Rankinecycle
Intermediate circuitdesign
SG materialsfor T° > 550°C
Pressureoptimization
Core
Containment
CirculationPump
Feed WaterPump
PHTSPump
�Gas cycle conversion (N2, supercritical CO2)�Water/steam (Rankine cycle)� Simplification of intermediate circuit and avoidance of sodium/water interaction
New Options for Energy Conversion
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17FR09 December 7th, 2009, Kyoto
Joyo (140 MWt)
Monju (280 MWe)
The Loop Concept
A Generation IV concept:JSFR (en project, 1500 MWe, 2025)
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18FR09 December 7th, 2009, Kyoto
ODS cladding to achieve high burn-up with elevated
temperaturePrevention of sodium
chemical reactions• Double-wall piping• High reliable SG with double-wall tube
Inspection and repair technology under sodium
Enhancement of reactor core safety
• Passive reactor shutdown system and decay heat removal by natural circulation
• Recriticality free core
� 1,500 MWe large-scale Sodium Cooled FBR with MOX fuel, � Innovative technologies for reactor core safety enhancement,safety enhancement,safety enhancement,safety enhancement, high economic competitiveness and
countermeasures against specific issues of sodium
Secondary pump
SG
Integrated IHX with primary Pump
Reactor Vessel
Innovative technologies to reduce plant materials and
reactor building volume
•Two-loop cooling system•Shortening of piping with high chromium steel
• Integrated Pump-IHX Component•Compact reactor vessel
The JSFR Project
Economics Reliability
Safety
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19FR09 December 7th, 2009, Kyoto
metal, carbide/nitride or oxide ?
� Metal fuel was developed in the US (EBR2)� MOX fuel feedback experience is the most extensive� Carbide and nitride enable to increase the margins with
respect to melting (gain in performances or in safety)
Liquid Metal Fast Reactor Fuel
Pu/(U+Pu) = 0.2 Carbide (U,Pu)C
Nitride (U,Pu)N
Oxide (U,Pu)O2
Metal (U,Pu)Zr
Heavy Atoms density (g/cm3)
12.95 13.53 9.75 14
Melting point (°C) 2420 2780 2750 1080 Thermal conductivity (W/m/K)
16.5 14.3 2.9 14
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20FR09 December 7th, 2009, Kyoto
Swelling of advanced austenitic steels and ferrito-martensitic steels used as fuel cladding in Phenixcladdings compare to F/M materials
0
1
2 3
4
5
6
7 8
9
10
60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 dose (dpa)
Average 316 Ti
Ferritic-martensitic (F/M) steels, ODS included
Average 15/15Ti Best lot of 15/15Ti
Embrittlement limit
(%)
Advanced fuel cladding: 316 Ti � 15-15 Ti � F/M ODS
- Large pin diameter - high burn up (dose > 200 dpa) � Cladding with no swelling
SUPERNOVA(Phenix)
SFR V283.4% Dth
Large-diameter pins,small-diameter spacing wire
Phenix88% Dth
Cladding material
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FR09 December 7th, 2009, Kyoto
Provisions for mitigating the core melting risk and, in the event of a core meltdown, for preventing high-energy accident sequences
Simulation of BTI* in Phénix(SIMMER-III code) Passive devices for corium channeling (FAIDUS, Japan)
A strategy for severe accident management
*BTI: Total Instantaneous Blockage of a fuel assembly
Safety Studies
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22FR09 December 7th, 2009, Kyoto
Objectives :� Gas : an alternative to liquid metals for fast reactors� Power range 300 – 1200 MWe� Outlet temperature of helium ~ 850 °C
� Robust fuel� Active + passive safety approaches� Cogeneration electricity + hydrogen
GFR SteeringCommittee
U.S.A.U.S.A.
JapanJapan
SwitzerlandSwitzerland
FranceFrance
South KoreaSouth Korea
South AfricaSouth Africa
EuratomEuratomcountriescountries
The GFR
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23FR09 December 7th, 2009, Kyoto
The Gas Fast Reactor (GFR)
OBJECTIVES : To concentrate on main problems (fuel and safety) in order to build in Europe, by the end of the next decade, a small experimental gas-cooled fast reactor (ALLEGRO)
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24FR09 December 7th, 2009, Kyoto
Choice of fuel for Gas Fast Reactors
0 25 50 75 100%vol. of actinide compound in the volume reserved to the fuel
Plates with boxes, high density
Advanced Particules
HTRs
RRG
Cladded pellets
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FR09 December 7th, 2009, Kyoto
Confirmation of DHR system performance (LOCA) with CATHARE
Efficiency of DHR systems and control of fuel temperature < 1600°C• 24 hr in forced convection (small pumping power ~ 10 kWe)• For longer term, natural circulation at 1.0 MPa
Analysis of GFR fast depressurization accidentGFR 2400 MWt, back-up pressure 10 bars
200
400
600
800
1000
1200
1400
0 20000 40000 60000 80000 100000time (s)
maxim
um fu
el tem
perat
ure (
°C)
Forced convection
24 h
GFR guard containment(metallic sphere 33 m diameter)
+ gas injection tanks
Safety Studies
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26FR09 December 7th, 2009, Kyoto
Objectifs :
•• cc
� Power reactor of 1200 MWe� Modular reactors of 300-400 MWe
� Coolant Pb or Pb-Bi� Material resistant to corrosion by Pb at 550-800 °°°°C� Fuel with actinides
(metal or nitrate)� Nuclear Battery 50-100 MWe –
cycle of 10-30 years
U.S.A.U.S.A.JapanJapan
South KoreaSouth Korea
The LFR
SwitzerlandSwitzerland
EuratomEuratom countriescountries RussiaRussia
Not yet signed
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27FR09 December 7th, 2009, Kyoto
The French ASTRID Prototype Project
*Technological Studies*Choice of ASTRID Power
End of Pre-Conceptual Design
End of Conceptual Design
Decision to continue
2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 ~ 2020
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28FR09 December 7th, 2009, Kyoto
The Need forHarmonization and Coordination at
International Level
� Harmonization of different national prototype / experimental reactor construction projects:�avoid duplication, seek complementarities
� Pooling of efforts, sharing of R&D tools / construction capabilities �optimisation of means
� Establishment of international safety standards, owing to the fact that safety and licensing are largely congruent among the international community�reference regulatory practices and regulations�international consensus on common (or compatible) high level safety philosophy
Conclusion