© 2013 Organisation for Economic Co-operation and Development
Update on OECD/NEA Activities for
Reactor Fuel Performance and Related
Activities
Akifumi YAMAJI
OECD/NEA Data Bank
Presentation to TWG-FPT
24-25 April 2014, IAEA, Vienna
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© 2013 Organisation for Economic Co-operation and Development
Overview: NEA Activities on Reactor Fuels
• Under the Nuclear Science Committee:
– WPRS / EG on Reactor Fuel Performance (EGRFP)
– WPFC / EG on Innovative Fuels (EGIF)
– WPMM / EG on Multi-scale Modelling of Fuels (M2F)
– EG on Increased Accident Tolerance of Fuels for LWRs
(NEW: Being proposed)
• Under the Committee on the Safety of Nuclear Installations
(CSNI):
– Working Group on Fuel Safety (WGFS)
• Under the Data Bank:
– International Fuel Performance Experiments (IFPE)
database
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© 2013 Organisation for Economic Co-operation and Development
IFPE History and Overview • IFPE: International Fuel Performance Experiment database
• IAEA/FUMEX Programmes (1993-2012)
• OECD/NEA Taskforce setup 1993
• OECD/NEA Report, prepared by J. A. Turnbull (1995)
• Creation of IFPE with data from Halden + Studsvik and Risø
(1995)
– The public domain database
– Thermal reactor fuel performance, principally for Zry + UO2
– Addition of advanced products with fuel and clad variants
is not ruled out
– Today, about 1452 rods/samples from various sources
encompassing BWR, CAGR, PHWR, PWR, and VVER
IFPE webpage http://www.oecd-nea.org/science/wprs/fuel/ifpelst.html 3
© 2013 Organisation for Economic Co-operation and Development
The Turnbull Report (1995)
Need for data in the following topic areas considered:
• Radial Flux Depression
• Thermal Performance
• Fuel Densification and Swelling
• UO2 Grain Growth
• Fission Product Release
• Clad Properties
• Pellet Clad Mechanical Interaction (PCMI)
• Integral Behaviour • High Burnup Effects
Creation of IFPE database 4
© 2013 Organisation for Economic Co-operation and Development
Expert Group on Reactor Fuel Performance
(EGRFP) • Created in 2011 under the guidance of the NSC Working
Party on Scientific Issues of Reactor Systems (WPRS)
• Chair: G. Rossiter (NNL)
• Secretariat: A. Yamaji (NEA)
Objectives
• To provide expert advice on the development needs (data
and methods, validation experiments, scenario studies) for
existing and future fuel designs
• To provide specific technical information regarding:
– National / international programmes, experimental capabilities
– The provision of experimental data for model development and
validation from the IFPE Database
– Methods for code verification 5
© 2013 Organisation for Economic Co-operation and Development
EGRFP Key Activities
• Report on “Experimental Data Requirements for Fuel
Performance Modelling” (2014/2015)
• IFPE database development
– “Front-end” interface to be prepared to enhance
accessibilities to the database (NEW)
– Keep coordination with IAEA/FUMAC New
experimental data for IFPE
• Benchmark on PCMI with Halden experimental data (NEW)
– Complementary to other benchmarks (e.g., IAEA / FUMAC,
OECD/NEA RIA Fuel Codes Benchmark)
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© 2013 Organisation for Economic Co-operation and Development
EGRFP Contribution to LWR Uncertainty Analysis
Benchmarks WPRS
Expert Group
on Reactor
Fuel
Performance
(EGRFP)
Expert Group on
Reactor Physics
and Advanced
Nuclear Systems
(EGRPANS)
Expert Group on
Radiation
Transport and
Shielding
(EGRTS)
Expert Group on
Uncertainty
Analysis in
Modelling
(EGUAM)
IFPE
database
International
Reactor Physics
Experiments
(IRPhE) database
International
Radiation Shielding
Experiments
database (SINBAD*)
* SINBAD is developed in cooperation with RSICC
• UAM-LWR Benchmark, Exercise II-1 – Fuel Modelling: Fuel thermal properties relevant to steady-state and transient performance
U-4 (uncertainties in fuel temperature – Doppler feedback)
IFA-429,
IFA-432
© 2013 Organisation for Economic Co-operation and Development
EGRFP: Meetings
• Third Expert Group meeting (Feb. 2013, NEA, Paris)
– attended by 27 experts from 12 countries (Belgium,
Czech Rep, Finland, France, Germany, Italy, Japan,
Poland, Russia, Spain, UK, USA) and 3 international
organisations (EC/ITU, IAEA, OECD/Halden).
• Next meeting: February 2015 at NEA (Paris) in conjunction
with WPRS meeting (date to be determined)
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Contact: [email protected]
© 2013 Organisation for Economic Co-operation and Development
Expert Group on Innovative Fuels (EGIF)
• Under the guidance of the NSC Working Party on
Scientific Issues of the Fuel Cycle (WPFC)
• Chair: N. Chauvin (CEA, France)
• Secretariat: S. Cornet (NEA)
Objectives &Scope
- Technical issues associated with the development of innovative
fuels and clad materials for use in advanced fuel cycles.
- Fuel of interest: homogeneous and heterogeneous minor actinide
(MA) bearing fuels in different form (oxide, nitride, metal, carbide,
etc)
- Covers technical issues related to: fabrication techniques, irradiation
performance, post irradiation examinations, predictive models/codes
for fabrication and performance
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© 2013 Organisation for Economic Co-operation and Development
EGIF Activities
• State-of-the-art Report on Innovative Fuels
– Study of MA containing fuels for advanced nuclear systems.
– Conclusions: Transuranics bearing fuels are being developed
at lab. scale and irradiation test have been limited to small
samples. Most advanced are metal and oxide fuels (publication
coming soon).
• Benchmark Study on Fuel Performance Codes and
Experiments
– Focus on experiments on MA bearing fuels with different
chemical forms.
– First stage: MA oxide and metal fuels (low content: 5% or less).
– Results to be gathered into a database.IFPE?
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© 2013 Organisation for Economic Co-operation and Development
Expert Group on Multi-scale Modelling of
Fuels (M2F)
• Under the guidance of the NSC Working Party on Multi-
scale Modelling of Fuels and Structural Materials for Nuclear
Systems (WPMM)
• Co-chairs:T. M. Besmann (ORNL, USA), C. Valot (CEA,
France)
• Secretariat: S. Massara (NEA)
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© 2013 Organisation for Economic Co-operation and Development
M2F Objectives & Scope: Establishing the state-of-the-art of the application of multi-scale modelling methods for nuclear fuels, with the aim of better understanding the fuel behaviour at atomistic and macroscopic scale. State-of-the-art Report
• Part I: state of the art and challenges of their modeling
• Part II: Methodologies for Developing and Assessing Material Properties
• Part III: Modeling and computational principles, specificities regarding
fuel
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Draft completed.
Under review.
© 2013 Organisation for Economic Co-operation and Development
Working Group on Fuel Safety (WGFS)
• Under the guidance of Committee on the Safety of Nuclea
Installations (CSNI)
• Chair: M. Petit (IRSN)
• Vice-Chair: W. Wiesenack (HRP)
• Secretariat: M. Kissane (NEA)
• Activities of the WGFS cover the following topics:
– Loss of Coolant Accidents (LOCA): Assessment of fuel fragmentation,
relocation and dispersal (NEW)
– Reactivity Initiated Accidents (RIA): Benchmark phase 2 (NEW)
– Fuel Safety Criteria
– Leaking fuel impacts and practices
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© 2013 Organisation for Economic Co-operation and Development
NSC Expert Group on Increased Accident
Tolerance of Fuels for LWRs (EGATFL): NEW
• Initiative since 2011, discussed at NSC, held 2 workshops
(2012, 2013)
• Focus: Sharing the technical basis of the R&D on the
materials for the core (fuel, cladding, control rods,…) that
would be explored as candidates for the ATF technology
• Start-up meeting: 28-29 April 2014, at NEA will aim at:
– Establishing a detailed mandate
– Define the structure of this EG
– Specify the programme of work
– Define the membership and electing Chair and co-Chair
• To be proposed to NSC in June 2014
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© 2013 Organisation for Economic Co-operation and Development
Thank you for your attention. Working Party on Scientific Issues of Reactor Systems
WPRS website:
http://www.oecd-nea.org/science/wprs/index.html
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