EERA JPN M Visi on Repport - fp7-matisse.eu · Project A. Mich 06/02/2 ents Coordinator aux, CEA...

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C Combination of Collabora Sta EER FP ative project Grant ag art date: 01/1 RA JPN P7-Fission-20 (CP) and Co greement no 1/2013 Dura D1.21a NM Visi 013 oordination a o: 604862 ation: 48 Mon ion Re nd Support A nths port Actions (CSA A)

Transcript of EERA JPN M Visi on Repport - fp7-matisse.eu · Project A. Mich 06/02/2 ents Coordinator aux, CEA...

C

Combination of Collabora

Sta

EER

FPative project

Grant agart date: 01/1

RA JPN

P7-Fission-20(CP) and Co

greement no1/2013 Dura

D1.21a

NM Visi

013 oordination a

o: 604862 ation: 48 Mon

ion Rep

nd Support A

nths

port

Actions (CSAA)

MatISSE – D.5

MatISSE –

Document

Main Autho

Number of

Document

Work Pack

Document

Issued by

Date of co

Dissemina

Summary

This reports

Approval

Rev. Da

1 14

Distribution

Name

MatISSE G

EERA JPNM

DG-RTD

EERA JPNM

ESNII Task

CEN-WS/64

5.21a – Fina

Contract Nu

t title

or(s)

f pages

t type

kage

t number

mpletion

ation level

s provides th

ate

4/01/2015

n list

eneral Asse

M Steering C

M Stake-hold

k Force

4-Phase-2 P

al version o

mber: 60486

EERA JPN

K-F Nilsso

15

Report

1

1.21a

JRC

15/01/2015

PU Public

e Vision for E

mbly

Committee

der group

PG2

on 19/12/20

62

NM Vision Pa

n, JRC, L. M

5

ly available

EERA JPNM

Lead

K-F N

14/01

Or

14..

Page 2/15

aper

Malerba, SCK

M in the timef

d Author

Nilsson, JRC

1/2015

rganisation

K•CEN, A. Jia

frame 2015-2

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Comm

anu, KIT

2020

Project

A. Mich

06/02/2

ments

Coordinator

aux, CEA

015

MatISSE – D.5.21a – Final version on 19/12/2014..

Page 3/15

ContentsExecutive Summary ........................................................................................................................................... 4 

1.  Target of this document ............................................................................................................................. 5 

2.  Nuclear energy in future low-carbon energy systems ............................................................................... 5 

3.  Materials for future nuclear reactor systems .............................................................................................. 7 

4.  Grand Challenges for structural and fuel materials for future nuclear reactors ......................................... 9 

5.  Towards an integrated European Nuclear Materials Programme ........................................................... 12 

6. Risks ............................................................................................................................................................ 14 

Appendix: milestones and high-level deliverables ........................................................................................... 15 

References ...................................................................................................................................................... 15 

MatISSE – D.5.21a – Final version on 19/12/2014..

Page 4/15

Executive Summary

Nuclear energy has an important role in implementing the challenge of the Energy Union’s forward-

looking climate change policy, as it provides energy with very limited CO2 footprint at stable and

comparably low prices, as well as a secure and reliable supply of base-load electricity. Nuclear power

today fulfils these requirements but two main issues remain, namely accident risk and long-lived nuclear

waste. Sustainability is not adequate (less than 1% of the energy content of the fuel is actually used), but

can be resolved completely by the deployment of Gen IV fast neutron reactors along with the necessary

fuel cycle facilities (beyond the state of the art) to extract reusable components of the fuel from which

new fresh fuel is generated. Thus, the energy utilization of the fuel is increased and the radiotoxicity of

the waste is dramatically curtailed. In this framework, the performance of nuclear (structural and fuel)

materials is essential for the development of sustainable nuclear energy. Materials in fast reactors will

be exposed to higher temperatures and higher irradiation levels than today's light-water reactors. Fast

reactors also use non-aqueous coolants, for which the full compatibility of materials needs to be

demonstrated. The European Energy Research Alliance (EERA) Joint Programme on Nuclear Materials

(JPNM) was launched in 2010 to provide the R&D for materials needed for the development and

implementation of fast reactors in Europe, as defined by the European Sustainable Nuclear Industrial

Initiative (ESNII).

This report describes the Vision of the EERA JPNM with respect to Grand Challenges that must be

addressed and resolved to take full advantage of the nuclear GenIV technology, with respect to safety,

performance and cost, and to ensure implementation towards 2040.

Grand Challenge 1: Elaboration of design rules, assessment and test procedures for the expected

operating conditions and the structural and fuel materials envisaged. This involves deployment of

infrastructures for relevant ageing phenomena and for testing of materials, data and knowledge,

which is currently limited.

Grand Challenge 2: Development of physical models coupled to advanced microstructural

characterization to achieve high-level understanding and predictive capability: an asset, given the

scarcity of experimental data and the difficulty and cost of obtaining them.

Grand Challenge 3: Development of innovative structural and fuel materials with superior thermo-

mechanical properties and radiation-resistance or, in general, nuclear-relevance, in partnership with

industry. Addressing these Grand Challenges requires a concerted action at European level involving research

community and industrial partners. The EERA JPNM addresses this by proposing a five-step process

towards an integration of relevant nuclear material laboratories in the EU Member States by 2020 with

the overall objective to ensure that nuclear GenIV technology can be implemented, as planned, in

Europe from 2040. The integration of nuclear materials research is necessary to optimise the use of the

available human and financial resources, as well as facilities and expertise, with the goal of solving the

future energy needs, but it requires sufficient support and engagement of the European Commission and

Member States.

MatISSE – D.5

1. Ta

This report

Nuclear Ma

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by 2035 [3]

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sting and de

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CO2 emiss

nergy at affo

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14..

Page 6/15

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MatISSE – D.5

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14..

Page 7/15

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MatISSE – D.5

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Figure 5 –

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14..

Page 8/15

partners, s

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MatISSE – D.5.21a – Final version on 19/12/2014..

Page 9/15

4. Grand Challenges for structural and fuel materials for

future nuclear reactors

The nuclear energy sector has always been required to deal with demanding material issues and has

responded by finding new engineering solutions. These include nuclear-grade materials and standardized

test procedures, design and construction codes and defect assessment codes. Furthermore, within nuclear

research programmes, state-of-the-art models in fields such as elastic-plastic fracture mechanics and high-

temperature degradation of materials, with and without irradiation, and, more recently, multi-scale models

and physics based models have been developed.

The requirements on structural materials, fuel and components of the prototype and subsequently industrial

scale GenIV nuclear systems present the nuclear community with a number of grand challenges. Some of

these are common for all fast reactor concepts, whereas others are reactor-type specific. The problems to be

addressed concern the degradation of properties of materials: this is a synergistic effect of radiation, high

temperatures, mechanical stresses and aggressive environments, accumulated over a long exposure time.

Moreover, under rare but abnormal conditions (e.g. accidents), the structural materials and the nuclear fuel

will encounter even harsher conditions, which also need to be accounted for in an integrity analysis. These

degradation modes may also interact, thereby further complicating their analysis. One problem that is more

pronounced for nuclear than other sectors is the need to predict, with sufficient confidence, the long-term

behaviour of materials and components under tough conditions, for which there is no or very little operational

experience.

Structural material exposed to irradiation and high temperature become mechanically less performing

(embrittlement, reduction of elongation, …) and change their dimensions (swelling, creep, …). Exposure to

coolants produces general and localised corrosion and erosion and these effects are generally exacerbated

by irradiation. The consequences of all these processes must be harnessed and mitigated via materials

science knowledge and appropriate design.

With respect to novel fuels, important features to be addressed are increased burn-up, tolerance to possible

accident scenarios (margin to melt), good compatibility with the coolant swelling, and cladding, capability to

include minor actinide, neutronic performance, etc. The fuel chemical form and consolidation mode (pellet vs

particle) need to be assessed.

One important objective of the GenIV nuclear systems initiative is the “safety and reliability” of the advanced

reactors, while also considering the overall cost. In order to accomplish this goal, the scientists and

engineers have to address three grand challenges related to structural materials and nuclear fuels:

Grand Challenge 1: Elaboration of design rules, assessment and test procedures suitable for the expected operating conditions and the materials envisaged. This involves deployment of infrastructures for relevant ageing phenomena and for testing of materials, data and knowledge, which is currently limited.

Design codes are crucial for ensuring that nuclear reactor components are designed on well-established

safety procedures and with proven safety margins. Design codes are also central to reducing the costs of

nuclear reactors, for instance facilitating licensing; e.g. the French design codes RCC-MRx will be used for

GenIV ESNII reactors.

MatISSE – D.5

However, s

limited cons

rules, mate

conditions;

both existin

This approa

correct env

robust engi

research fac

expected op

This involve

capabilities,

All these a

components

included in

Together w

guide the e

where expe

design code

reliable des

Grand Chcharacterizscarcity of

evolution, w

microstructu

Figure 6 -

scales

5.21a – Fina

ome rules o

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and (ii) deve

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ach will be b

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activities are

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subprogram

ith extensive

elaboration o

erimental dat

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sign criteria. T

allenge 2: zation to aexperiment

when operatio

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Models and

al version o

f these code

here are the

data and pro

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materials, but

based on ext

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are suitable t

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14..

Page 10/15

verly conser

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n order to ob

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uclear reacto

ngth and tim

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roperties. F

duces dama

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aterials’ ma

hallenge is

redict and v

roperties tha

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ected to spe

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fuel materials

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and fuel ma

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the availab

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For instanc

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‘separated effects’) with physics-based models at the appropriate length and time scales: these include

electronic structure calculations, molecular dynamics, kinetic Monte Carlo or cluster dynamics, dislocation

dynamics and crystal plasticity. Dedicated experiments, targeting the identification of specific mechanisms

and guided by models, must be used both for calibration and validation. For fuel materials there is a need for

thermochemical models to understand the complex behaviour of the fission products in gaseous, volatile or

solid form and their physical and chemical interaction with the fuels. The final step for prediction requires a

multi-scale approach that bridges models at different scales, allowing appropriate extrapolation, as illustrated

in Figure 6. Physics-based models that incorporate the relevant length scales are also necessary to correctly

interpret data from miniature tests such as nano-indentation and to apply this understanding to structural

components. Investigations along these lines have been initiated in EERA JPNM subprogrammes 4 and 6,

for structural and fuel materials, respectively.

Grand Challenge 3: Development of new materials with superior thermo-mechanical properties and radiation-resistance or, in general, nuclear-relevance, in partnership with industry for a faster industrial upscaling.

Future advanced reactors will rely initially to a large extent on proven technology and commercially available

structural and fuel materials, e.g. austenitic and ferritic-martensitic steels or nickel-based alloys, and MOX

fuels, respectively. Their qualification and codification is already a challenge. However, to safely exploit the

full potential of nuclear reactors by, for instance, achieving higher burn-ups or higher operating temperatures,

or by using these reactors to burn minor actinides, new materials need to be developed. Promising

structural materials, already used in other sectors, also need to be adapted for nuclear applications. Two

classes of structural materials for fuel claddings are included in EERA JPNM: high-temperature resistant

steels, mainly oxide-dispersion strengthened (ODS), but also improved by tuning composition and thermo-

mechanical treatments, which are addressed in subprogramme 2, and silicon-carbide composites (SiC/SiCf),

which are considered in subprogramme 3. Exploratory work on MAX phases ceramic-metallic composites

(cermets), which may have mechanical properties akin to metallic alloys, is also included in subprogramme

3. Besides these three classes, modified surface layers and coatings for the mitigation of structural material

degradation are under evaluation in subprogramme 1 and have shown promising results. However, there is

no overall or globally ideal material and there is always a trade-off between the material properties. Materials

with tailored properties would be an ideal solution, which may come from functionally graded materials. The

potential for future nuclear applications of the newly discovered high-entropy alloys that combine high

ductility and toughness might for example also be considered.

To exploit the features of the fast reactor technology, the ‘driver’ fuels need to be designed through

incremental innovations (geometry, enrichment, etc.) on mixed oxide fuel or more radical innovation based

on carbides or nitrides. Advanced fuels to achieve minor actinide burning represent a high degree of

innovation. These are investigated in the subprogrammes 5 and 6.

There is no established industrial production for the above mentioned structural materials that allows their

manufacturing according to current nuclear specifications and therefore their widespread use; even less is

there an established industrial production of nuclear components made with these materials. In general, to

obtain materials with the desired properties, which are suitable for industrial up-scaling, there is a need for

an advanced "Design and Control" approach. This implies pro-active interaction of the nuclear materials

MatISSE – D.5.21a – Final version on 19/12/2014..

Page 12/15

community, with material producers and the development of advanced models that can reach the required

level of industrial usability and coupling with industrial procedures. For ceramics and composites there is an

existing and large industrial market in the aerospace domain which can be exploited in this context.

In order to allow the introduction of new materials onto the engineering scene, to either reduce the cost or

dramatically increase the performance of components, new and emerging technologies such as 3D-printing

or hot isostatic pressing (HIP) and modification of component design, for instance to achieve minimal

amounts of joining, should be considered. In general, the speed of up-scaling from laboratory to industrial

production needs to be faster for all nuclear materials, both structural and fuel. This is primarily a task for

industry, but a close collaboration between industrial partners and the research community is of mutual

benefit where research could provide supporting models and design, and also perform and evaluate tests.

5. Towards an integrated European Nuclear Materials

Programme

The development, design and construction of sustainable nuclear energy reactors, according to the GenIV

paradigm, is a very challenging endeavour that requires large financial and human resources. However, it is

a necessary undertaking due to the importance of sustainable nuclear energy in guaranteeing a constant,

reliable, abundant and cost-effective production of low-carbon energy. Given the grand challenges described

above, this also applies to materials and components. However materials research is also to a large extent a

cross-cutting issue not only for the different reactor system concepts and generations of nuclear reactors

themselves, but also other high-efficiency low-carbon energy technologies. This is the reason why the EERA

JPNM was formed: to integrate the materials research that is conducted by the national research

organizations, for nuclear energy but not only, into a truly European programme, to form a vital asset to be

exploited. This implies making efficient, coordinated, optimized and wise use of the resources, human and

financial, that the different Member States have and can offer and share. However, it is currently unlikely that

the funding that Member States can provide for nuclear materials research will increase and a careful

analysis of the current situation in terms of financial approaches and realistic opportunities [9] has made it

evident that the JPNM funding for GenIV research and coordination unavoidably requires Euratom support

as well. It is essential to secure the current level of funding and make the best use possible of it by the

combination of two schemes:

1 a co-fund action with consistent Euratom participation, such as a European Joint Programme on

nuclear materials, as a way to at least earmark, and possibly leverage, funds for the EERA JPNM

also from the Member States;

2 a pro-active role on the EERA JPNM side in coordinating research activities and promoting the

efficient use of human resources and facilities throughout Europe, by limiting duplication and

enhancing integration, while remaining in constant dialogue with Member States and European

Commission.

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MatISSE – D.5.21a – Final version on 19/12/2014..

Page 14/15

delocalised set of accessible and integrated facilities. Necessarily, this occurs via promoting interaction

between researchers to learn how to work together effectively, as outlined above. Moreover, an integrated

approach to the collaborative use of facilities, with the support of the management of the different research

organizations, is a very important step. Ultimately the goal would indeed be that experimental facilities

should be shared in an optimal way, according to a scheme that ensures fair costs and distribution of

intellectual property rights, protecting acquired know-how. Sharing of data respecting intellectual property

rights and according to commonly accepted fair rules is another crucial and very difficult step towards

integration. To start with, data generated in common projects can be shared through a common web-based

database, but for a true integration, mechanisms need to be found to share data generated outside common

projects, while ensuring that the data owner retains the full control of who can access these data. These

steps towards full integration are, however, totally impossible without a strong commitment from the

management of the research organizations, and therefore Member States that actually own and fund

the organizations, as well as from the European Commission. There must be expressed willingness at

Member State level to proceed along this integration, overcoming all potential legal and administrative

difficulties. Crucially, there must also be a commitment to support the process financially and, even more

importantly, the research that the virtual centre would perform. The latter requires, as anticipated, that the

European Commission offers a suitable instrument that should not only promote coordination and integration

involving actively the Member States, but also provide adequate funding for the research work.

6. Risks The path towards integration sketched in the previous section constitute the goal of the EERA JPNM and is

currently the only sensible means to address the Grand Challenges described above, that constitute the

scientific objective of the JPNM. However, even with all the integration effort and after securing available

funding, there remains risks that the Grand Challenges might not be appropriately addressed. First and

foremost, there is a problem in connection with the costly facilities for the exposure of materials to conditions

of relevance for the reactors that are crucial for their qualification of the materials. These facilities are scarce

or do not exist, yet. Despite efforts to develop models and new paradigms that make laboratory data relevant

for real conditions, their scarcity or the need for additional funding for their construction or upgrade may be a

serious hindrance to addressing especially the first of the Grand Challenges. The political will to invest in

nuclear energy and pursue the certainly costly, but equally certainly rewarding in the long-term, goal of Gen

IV nuclear systems, is another unknown. It is clear that, if within the next 10-15 years no prototype reactors

such as Myrrha or Astrid is commissioned, it is unlikely that the goal of GenIV nuclear systems will be

reached on time with respect to current goals for counteracting climate change and ensuring more

sustainable energy production.

MatISSE – D.5.21a – Final version on 19/12/2014..

Page 15/15

Appendix: milestones and high-level deliverables

Milestones towards integration Integration level

Tentative date

Roadmaps for structural materials and fuel 2 2015

EERA JPNM Description of Work for 2016 – 2020 2 2015

Establishment of Scientific Advisory Group and End-Users group 2 2015

Review of EERA JPNM 2011-2015 2 2016

EURATOM projects or co-fund actions based on EERA JPNM DoW 2016-2020

3 2016-2017

Deployment Plan EERA JPNM 3 2017

Collaboration Agreement with other materials networks 2 2017

Establishment of Virtual Centers 3 2018

Collaboration Agreement for sharing of facilities 3 2018

Management of Common projects with funding from Member States and EC. 4 2020

 

High level Deliverables Qualification of structural and fuel materials suitable for the construction of efficient and safe Gen IV reactor systems, with focus on the ESNII demonstrators and prototypes, in particular Myrrha and Astrid. Pre-normative research recommendations for component design rule modifications in support to ESNII’s demonstrators and prototypes. Standardized test procedures to codify and disseminate results of R&D&I activities on advanced materials. Path towards industrial production scaling of innovative materials for continuously increased safety and efficiency of Gen IV reactor systems Robust understanding of main physical mechanisms determining the response of materials to Gen IV reactor operating conditions and relevant models.

 

References

1. The European Strategic Energy Technology Plan, SET-Plan, towards a low-carbon future, European Commission, http://ec.europa.eu/energy/publications/doc/2010_setplan_brochure.pdf

2. Eurostat electricity production in the EU http://epp.eurostat.ec.europa.eu/statistics_explained/index.php/Electricity_production_and_supply_statistics

3. World Energy Outlook Special Report 2013, International Energy Agency, Paris, 4. Energy Technology Perspectives 2014 - Harnessing Electricity's Potential, International Energy

Agency, Paris 5. Deliverable D10.2 - RS2b “Final report on sustainability assessment of advanced electricity supply

options”, NEEDS project. http://www.needs-project.org/docs/NEEDS_RS2b_D10-2%20-%20Final%20Report.pdf

6. ESNII Concept Paper – October 2010 http://www.snetp.eu/www/snetp/images/stories/Docs-ESNI/ESNII-Folder-A4-oct.pdf

7. ESNII European Sustainable Nuclear Industrial Initiative Implementation Plan 2013-15 (available on www.snetp.eu for members), March 2013

8. STRATEGIC ENERGY TECHNOLOGY PLAN, Scientific Assessment in support of the Materials Roadmap enabling Low Carbon Energy Technologies: Nuclear Energy, European Commission, EUR 25180-11

9. I. Aho-Mantila, U. Ehrnsten, L. Malerba, "Reflection of the EERA financial approach to IRP/JP on Nuclear Materials", FP7/MatISSE, Deliverable D1.33 (Dec. 2014).

10. EERA position paper, 2014.