WIR SCHAFFEN WISSEN – HEUTE FÜR MORGEN

Hakim Ferroukhi

EPFL/ETHZ Nuc. Eng. Master Student Visit, PSI, May 18, 2018

Laboratory for Reactor Physics and Thermal-Hydraulics (LRT)

2018.05.18/LRT /FH41 ( 2 / 12 )

LRT The Lab in a Nutshell

Home of Nuclear Safety Analyses and Phenomenology

Reactor/Fuel Design Normal Operation Transients Design Basis Accidents Severe Accidents

Out-of-Core Applications: Fluence/activation, Criticality Safety, Spent Fuel Integrity

Home of Scientific Support to Regulators and Industry

Deterministic Nuclear Safety Analyses

Technology Assessment and Optimization for Long-Term Economical Operation

Spent Fuel Management, Criticality and Radiation Safety of Storage/Transport/Disposal Facilities

Home of Experimental Studies and Instrumentation Techniques

Thermal-Hydraulics Phenomena in Primary/Secondary Circuit, Containment, Pools and Safety Systems during Accidents

Reactor Physics Experiments for Spent Fuel Measurements and Nuclear Data Enhancements

Neutron Tomography for Material Characterization

Home of Education and Teaching Programs

EPFL/ETHZ NE Master Program Courses: Neutronics, Reactor experiments, Nuclear Computations Lab, Beyond Design Accidents

Supervision of Post-Doc Fellows, PhDs, Semester/Master Students/Trainees and Guest Scientists

Home of Multi-Physics Multi-Scale LWR Simulations with Uncertainty Analyses

Nuclear Data, Reactor Physics and Neutron/Radiation Transport

System Thermal-Hydraulics, Sub-Channel Analyses and CFD for Safety Applications

Fuel Performance and Fuel Safety criteria

Containment Thermal-Hydraulics and Hydrogen Behaviour

Severe Accidents Simulations and Source Term Mitigation

2018.05.18/LRT /FH41 ( 3 / 12 )

LRT Organization

4 Research Groups

TEAM 31 Staff

8 PhDs

2 Post-Docs

2 MSc Students

1 Guest Scientist

2018.05.18/LRT /FH41 ( 4 / 12 )

LRT Research Programs

2018.05.18/LRT /FH41 ( 5 / 12 )

Panorama – From Turbine to Pellet Modelling

Infrastructure – Analytical Facility

STARS Overview

2018.05.18/LRT /FH41 ( 6 / 12 )

STARS MSc Project 1

Development of Accident Tolerant Fuel Models in FALCON

FALCON is a state-of-the-art FEM Code for Fuel Performance developed by EPRI in

collaboration with PSI/STARS Designed primarily for thermo-mechanical analyses of current UO2/Zr-Clad technology

New Claddings (SiC) and Fuel Materials (U2Si2) on the way for stronger accident-resistance

Master Project Development of U3Si2 / SiC Thermal-Behaviour Models for FALCON including literature surveys

Verification and/or Validation against available Experimental Data

Assessment of Performance during Normal Operation and Transients for LWRs

Complex Phenomenology of

UO2/Zr Fuel Behaviour Trends towards

Development of New ATF Materials

Need to Develop New Fuel Performance Models

to Assess and Optimize ATF Performance

Contact: Cedric ( Cedric.Cozzo@psi.ch )

2018.05.18/LRT /FH41 ( 7 / 12 )

STARS MSc Project 2

Background Methodology for MCNP Criticality Safety Evaluations with Nuclear Data Uncertainty Quantification (NUSS)

developed at PSI

Validation based on fresh fuel critical experiments only – Applicability for burned fuel need to be proven

Also, account of correlations between experiments could potentially reduce calculated unceratinties

Master Project Review criticality benchmarks suitable for transposition to validation of CSE with Burnup Credit (BUC)

Development of MCNP models and analyses with NUSS using latest libraries

Derive correlations between validation benchmarks and selected application case (e.g. disposal canister)

Evaluate effect of correlations on CSE unceratinties and upper sub-criticality limits

Criticality Safety for Spent Fuel Geological Disposal

Contact: Alex ( Alexander.Vasiliev@psi.ch )

2018.05.18/LRT /FH41 ( 8 / 12 )

Infrastructure – Analytical and Experimental

SACRE Overview

Panorama – from Core Degradation to Source Term

2018.05.18/LRT /FH41 ( 9 / 12 )

MELCOR is an integral computer code developed by the Sandia National Laboratories for

modeling severe accidents in nuclear power plants. Since the code version 2.1, also accident scenarios in High Temperature Gas-cooled Reactors (HTGRs)

can be considered.

Master Project Improvement of the existing MELCOR input deck of the HTR-PM pebble bed reactor

Investigation on the capabilities to model fission product release and transport in HTR-PM in normal

operation and in accident conditions using the MELCOR core.

Contact: Jarmo ( Jarmo.Kalilainen@psi.ch )

Accident Analysis of High Temperature Reactors Estimation with MELCOR of the source term from different severe accident sequences

SACRE MSc Project

2018.05.18/LRT /FH41 ( 10 / 12 )

Panorama – Nuclear Safety Phenomenology with Integral-to-Separate Effects Tests

Infrastructure Experimental Facilities and Advanced Instrumentation

TEG Overview

2018.05.18/LRT /FH41 ( 11 / 12 )

Background Aerosol Release during Severe Accident in Nuclear Power Plants

Current Techniques and Technology for Measuring Aerosol Characteristics limited

Master Project Develop an optical method based on light attenuation

Design and conduct experiments in a smaller scale facility using LINX infrastructure, where analytical

models from literature can be used to analyze the experiments, e.g. particle settling in a quiescent fluid.

Comparison against established techniques such as Phase Doppler Anemometry (PDA) or Shadowgraphy

Expected outcome: A scalable aerosol measurement method

Development of Optical Sensor for Aerosol Measurements

Contact: Sid ( sidharth.paranjape@psi.ch )

TEG MSc Project

2018.05.18/LRT /FH41 ( 12 / 12 )

LRT Wrap-Up

Additional projects available or can be proposed/discussed. For experimental thermal-hydraulics, please contact Domenico.Paladino@psi.ch

For nuclear data to core analysis simulations, please contact Alexander.Vasiliev@psi.ch

For thermal-hydraulic and fuel simulations, please contact Ivor.Clifford@psi.ch

For severe accident modelling and experiments, please contact Terttaliisa.Lind@psi.ch

For additional info on LRT and its research programs Please consult www.psi.ch/lrt

Final Words

LRS Tradition

• Integrate EPFL/ETHZ Master Projects in On-Going Work OR to kick-off New Activities

LRT Encouragement

• Use Semester Work as “Heat-Up” phase for Master Project and opportunity for first conference paper

• Take Master Project as opportunity for first Journal article

M. Papadionysiou (MSc Student 2016-2017) G. Perret, R. Zboray, R. Adams, J.-B. Mosset; Monte Carlo Simulation Of A Scintillation Detector For Spent Fuel Characterization In A Hot Cell; Nuclear Engineering And Design 332 (2018) 119 126; doi: 10.1016/j.nucengdes.2018.03.033

B. Jung (MSc Student 2017-2018), A. Vasiliev, M. Pecchia, H. Ferroukhi; Optimization And Sensitivity Studies Towards PWR Structures Activation Characterization Using the MCNP Code; ANS Student Conference 2018, University of Florida, Gainesville Florida, USA, April 5 - 7 2018

Thank You ! And Looking Forward to Warmly Welcome You at the LRT for Your Semester/Master project !