European Commission

Euratom framework programme 1994-98Specific programme for research and training on 'Nuclear

fission safety' — Innovative approaches and reactor safety

FISA 99EU research in reactor safety

Conclusion symposium on shared-costand concerted actions

Luxembourg, 29 November to 1 December 1999

Edited by

G.IVan Goethem, J. Martin Bermejo, A. Zurita, H. Bischoff and G. Keinhorst

Directorate-General for ResearchDirectorate 'Preserving the ecosystem II'

Unit 'Safety and management of the fissile fuel cycle, radiation protection'

2000 EUR 19532 EN

CONTENTS

Opening

The 5th Euratom framework programme 1998-2002:end-user driven research and training activities 3

J.F. Marchipont, Director DG Research, EC (Brussels)

The European Utility Requirement document (EUR) 9B. Roche, Vice President Engineering and Services Division, EDF (Saint-Denis Cedex)

Engineering challenges of evolutionary reactors: a European vendorprospective on Community research in reactor technology 18

J. Czech, Deputy Director Technical Division, NPI (Paris)

Strategy and research needs for nuclear power plant development: plantmodernization and possible new construction in Finland 28

L. Mattila, Research Manager and T. Vanttola, VTT Energy (Helsinki)

Common safety culture requirements in Europe: needs for a strongerscientific co-operation between the EU, CEEC and NIS 37

M. R. Hayns, Nuclear Safety Consultant (West Runton, Norfolk)

Main achievements of FP-4 (1994-1998) research in reactor safety 46G. Van Goethem, A. Zurita, J. Martin Bermejo, P. Lemaitre and H. Bischoff,DG Research, EC (Brussels)

Ageing of structural components

Contribution of modern plant management to the improvement ofsafety culture (invited) .• 57

J. Palomo, Manager Safety an'd Licensing Iberdrola (Madrid)

Challenges left in the areas of materials ageing and plant modernisation (invited) 67H. Schulz, Head of Component Integrity Department, GRS (Koln)

RPV dosimetry activities: projects AMES dosimetry and MADAM 77A. Ballesteros (Tecnatom, Madrid), L. Debarberis (JRC/IAM, Petten),W. Voorbraak, C. Sciolla (NRG, Petten), M. Valo (VTT Energy, Espoo) T.Lewis (Magnox Electric, Berkeley) and H. Ait Abderrahim (SCK/CEN,Mol)

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Reconstitution techniques qualification & evaluation to study ageingphenomena of nuclear pressure vessel materials (RESQUE)

E. van Walle, M. Scibetta (SCK/CEN, Mol), M.J. Valo (VTT Energy,Espoo), H.W. Viehrig, H. Richter (Research Center Rossendorf, Dresden), T.Atkins (AEA Technology, Harwell), M.R. Wootton (BNFL Magnox,Berkeley), E. Keim (Siemens, Erlangen), L. Debarberis (JRC/IAM, Petten)and M. Horsten (NRG, Petten)

Relation between different measures of exposure - Induced shifts in ductile-brittle transition temperatures: Validation of surveillance practice andmitigation methods for ageing reactor materials (REFEREE)

C.J. Bolton (Magnox Electric, Berkeley), R. Chaouadi (CEN/SCK, Mol),K.R.W. Wallin (VTT Energy, Espoo), L. Debarberis (JRC/IAM, Petten),R.H. Priest (Nuclear Electric, Barnwood) and R.M. Boothby (AEA-T,Harwell)

Assessments of modelling requirements to follow ageing phenomena(MODAGE)

J. Henshaw (AEA Technology, Harwell), P. Scott (Framatome, Paris), R.Killian (Siemens, Erlangen) and O. Hietenan, R. Ahlstrand (IVO, Vantaa)

Evaluation of techniques for assessing corrosion cracking in dissimilar metalweldments (DISWEC)

D.R. Tice (AEA Technology, Risley), P. Aaltonen (VTT, Espoo),B. Rosborg (Studsvik Material, Nykoping), J.D. Atkinson (Sheffield HallamUniversity), W. Dietzel (GKSS-Forschungszentrum Geesthacht), D.I. Swan(Rolls-Royce and Associates, Derby), J. Lapefla (CIEMAT, Madrid) andS. McAllister (JRC/IAM, Petten)

Structural integrity of bi-metallic components (BIMET)C. Faidy, G. Chas (EDF/SEPTEN, Villeurbanne), S. Bhandari (Framatome,Paris), M.P. Valeta (CEA/DRN, Saclay), R. Hurst, A. Youtsos (JRC/IAM,Petten), P. Nevasmaa (VTT Energy, Espoo), W. Brocks (GKSSForschungszentrum Geesthacht), D. Lidbury (AEA Technology, Risley) andC. Wiesner (TWI, Cambridge)

Variation of residual stresses in aged components (VORSAC)R.H. Leggatt (TWI,' Cambridge), E. Keim (Siemens, Erlangen),P.J. Bouchard (Nuclear Electric, Barnwood), H. Keinanen (VTT Energy,Espoo), M. Clerge (Institut de Soudure, Ennery), F. Rustichelli (Universitadegli Studi, Ancona), D.J. Smith (University of Bristol), V. Schulze

. (University of Karlsruhe), A.G. Youtsos (JRC/IAM, Petten), C.P. Millward(Magnox Electric, Berkeley) and S.K. Bate (AEA Technology, Risley)

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Ageing material evaluation and studies by non-destructive techniques(AMES-NDT) 134

L. Debarberis, B. Acosta, M. Beers (JRC/IAM, Petten), J.F. Coste, J.P.Massoud (EDF/DER, Moret-sur-Loing), M.G. Horsten (NRG, Petten),P. Kauppinen, J. Pitkanen (VTT, Espoo), G. Dobmann, M. Kroning(Fraunhofer IZFP, Saarbriicken), J. Bros (Tecnatom, Madrid), G. Weimann(ARCS, Seibersdorf), M. Hutchings, A. Rogerson (AEA Technology,Abingdon), D. Gomez Briceno, FJ. Perosanz (CIEMAT, Madrid), D.H.Stegemann (IKPH, Hannover), R.D. Kalkhof (PSI Villigen) and J.C. Spanner(EPRI Charlotte)

Integrity assessment of ageing components (INTACT) 143K. Kussmaul, E.Roos (MPA, Stuttgart), S. Burnay (AEA-T, Harwell), F.Michel, K. Knips (GRS, Koln), CJ. Bolton, D.W. Twidale (Magnox,Berkeley), J.M. Humbert, N. Mermilloid, P. Petrequin (CEA, Paris), L.Debarberis, U. von Estorff, F. Sevini (JRC-IAM, Petten), M. Erve, A. Nink,W. Michel (Siemens, Erlangen), J.C. Cano (Technatom, Madrid), J. Eibl(University Karlsruhe) and R. Rintamaa (VTT, Espoo)

European network of risk-informed in service inspection (RI-ISI) (EURIS) 151O.J.V. Chapman (Rolls-Royce and Associates, Derby), K. Aubert (EDF,Chatou), R. Axelsson (AKG, Oskarshamn), B. Brickstad (SAQ, Sweden), L.Fabbri (JRC/IAMP, Petten), ), M. Garcia Heras (Tecnatom, Madrid), R.Gerard (Belgatom, Brussels), W. Kohlpaintner (Preussen Elektra, Hannover),D.P.J. Lidbury (AEA Technology, Risley) and J.B. Wintle (TWI,Cambridge)

In-vessel core degradation and coolability

Challenges left in the area of in-vessel melt retention (invited) 161V. Asmolov, Director Nuclear Safety and N.N. Ponomarev-Stepnoy, RussianResearch Center " Kurchatov Institute", V. Strizhov, IBRAE, RussianAcademy of Sciences, Moscow and B. Raj Sehgal, Royal Institute ofTechnology, Stockholm

Methodology for analysis of R&D needs in severe accidents, material effectson severely damaged core phenomena (invited) 172

J. M. Seiler, CEA-DRN, Grenoble

Investigation of core degradation (COBE) 182I. Shepherd, T. Haste, N. Kourti (JRC/ISIS, Ispra), F. Oriolo, M. Leonardi(Universita degli Studi di Pisa), J. Knorr, S. Kretschmer, M. Umbreit(Technische Universitat Dresden), B. Adroguer (IPSN, Cadarache),P. Hofmann, A. Miassoedov, V. Noack, M. Steinbriick, Ch. Homann, H.Plitz (FZK Karlsruhe), M. Veshchunov (IBRAE, Moscow), M. Jaeger, M.Medale (Universite de Provence, Marseille), B. Turland, R. Hiles (AEATechnology, Winfrith), G. Bandini, S. Ederli (ENEA, Bologna), T.Linnemann, M. Koch, H. Unger (Ruhr-Universitat Bochum), K. Miiller(Universitat Stuttgart) and J. Fernandez Benitez (Universidad Politecnica deMadrid)

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Oxidation phenomena in severe accidents (OPSA)I. Shepherd, T. Haste, R. Hummel, N. Kourti (JRC/ISIS, Ispra), B. Adroguer(IPSN, Cadarache), P. Hoffmann, G. Schanz (FZK, Karlsruhe), J. Knorr, M.Buchmann, O. Gleisberg, R. Kaltofen, R. Schneider (Technische UniversitatDresden), M. Leonardi, F. Oriolo (Universita degli Studi di Pisa), Z. Hozer,L. Maroti, L. Matus and P. Windberg (KFKI Atomic Energy Institute,Budapest)

Corium interactions and thermochemistry (CIT)B. Adroguer, M. Barrachin (IPSN, Cadarache), D. Bottomley (JRC/ITU,Karlsruhe), P. Hofmann, A. Miassoedov, J. Stuckert (FZK, Karlsruhe), P.Y.Chevalier, B. Cheynet (Thermodata, Grenoble), M. Fischer, S. Hellmann(Siemens/KWU, Erlangen), J.M. Seiler (CEA/DRN, Grenoble), G. Cognet,F. Sudreau (CEA/DRN, Cadarache), M. Bellon (CEA/DEC, Cadarache), F.Toci, K. Forcey, P. Pacenti (JRC-IAM, Ispra), R. Nannicini (ENEA, Ispra),Marguet (EDF/DER, Clamart), G. Azarian (Framatome, Paris), P. Hayward(AECL, Whiteshell), M. S. Veshchunov (IBRAE, Moscow), V. Vrtilkova(SKODA-UJP, Zbraslav) and D. Lopukh (LSK, St Petersburg)

Molten fuel coolant interaction (MFCI)D. Magallon I. Huhtiniemi (JRC/ISIS, Ispra), P. Dietrich (IPSN, Fontenay-aux-Roses), G. Berthoud, M. Valette (CEA/DRN, Grenoble), W. Schutz, H.Jacobs (FZK, Karlsruhe), N. Kolev (Siemens, Erlangen), G. Graziosi(ANSALDO, Genova), B.Raj Sehgal (RIT, Stockholm), M. Burger, M.Buck, E.V. Berg (Universitat Stuttgart), G. Colombo (ENEA detached toIspra), B.Turland, G. Dobson (UKAEA, Winfrith) and D. Monhardt(Framatome, Paris)

Core melt pressure vessel interactions during a light water reactor severeaccident (MVI)

B. Raj Sehgal (RIT, Stockholm), B.D. Turland (AEA Technology, Winfrith),O. Kymaelaeinen (FORTUM, Vantaa), J.M. Bonnet (CEA/DRN, Grenoble),K. Ikonen (VTT Energy, Espoo), F. Parozzi (ENEL, Milan), M. Caira(Universita degli Studi di Roma "La Sapienza"), N.B. Siccama (NRG,Petten) and N. Kolev (Siemens/KWU, Erlangen)

Severe accident recriticality analyses (SARA)W. Frid (SKI, Stockholm), F. Hojerup (Ris0 National Laboratory, Roskilde),E.K. Puska, I. Lindholm, J. Miettinen (VTT Espoo), L. Nilsson (StudsvikEco & Safety, Nykoping) and H. Sjovall (Teollisuuden Voima Oy)

In-vessel core retention strategy (IVCRS)P. Richard, G.L. Fiorini, P. Dumaz (CEA/DER, Cadarache), K.C.J. Ketelaar,F. Roelofs (NRG, Petten), G. Bandini, P. Meloni (ENEA, Bologna), W. vonLensa (FZJ, Julich), K. Schaaf, K. Trambauer (GRS, Garching), H. Plank, S.Hellmann (Siemens/KWU, Erlangen), W. Steinwarz (Siempelkamp,Krefeld), G. Cattadori, R. Ferri (SIET, Piacenza) and G. Forasassi, D.Aquaro and F. Oriolo (Universita degli Studi di Pisa)

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On the prediction of the reactor vessel integrity under severe accidentloadings (RPVSA) 247

R. Krieg (FZK, Karlsruhe), J. Devos (CEA/DRN, Saclay), C. Caroli (ENEA,Roma), G. Solomos (JRC/ISIS, Ispra), P.J. Ennis (FZJ, Jiilich) and D.Kalkhof(PSI, Villigen)

Reactor vessel integrity in severe accidents (REVISA) 256J. Devos, L. Le Ber, L. Nicolas (CEA/DRN, Saclay), S. Bhandari(Framatome, Paris), C. Messelier-Gouze (EDF, Les Renardieres), P.Auerkari (VTT, Espoo), K. Santaoja (formerly with VTT), C. Caroli (ENEA,Roma), J. Fokkens (NRG, Petten), H. Lammer, T. Malmberg (FZK,Karlsruhe), K. Krompholz (PSI, Villingen), G. Solomos (JRC/ISIS, Ispra),E.C. Aifantis (Univ. Aristotle, Thessaloniki) and P. Eisert (GRS, Koln)

Ex-vessel corium behaviour and coolability

Corium spreading and coolability (CSC) 269G. Cognet, C. Journeau, M. Cranga, G. Laffont (CEA/DRN, Cadarache), H.Alsmeyer, G. Fieg, H. Werle, W. Tromm (FZK, Karlsruhe), D. Magallon(JRC/ISIS, Ispra), R. Wittmaack (Siemens/KWU, Erlangen), B. Raj Sehgal(KTH/RIT, Stockholm), W. Widmann (Universitat Stuttgart), L. De Cecco(ENEA, Bologna), R. Ocelli (Institut Universitaire des Systemes ThermiquesIndustriels, Marseille), G. Azarian (Framatome, Paris), D. Pineau(EDF/DER, Chatou) and B. Spindler (CEA/DRN/DTP, Grenoble)

Melt stratification for in-vessel and ex-vessel events (STRATIEX) 279P.K. Mason, M.A. Mignanelli, B.D. Turland (AEA Technology, Harwell),B. Spindler (CEA/DTP, Grenoble), B. Raj Sehgal (KTH/RIT, Stockholm)M. Nie, F. Funke (Siemens/KWU, Erlangen), M.K. Koch and T. Berlepsch(Ruhr Universitat, Bochum),

Thermochemical modelling and data (THMO) 285E.H.P. Cordfunke, M.E. Huntelaar (NRG, Petten), F. Funke (Siemens/KWU,Erlangen), M.K. Koch, Ch. Kortz (Ruhr Universitat, Bochum) and P.K.Mason, M.A. Mignanelli, M.S.'Newland (AEA Technology, Harwell)

Investigations on the phenomenology of ex-vessel core melt behaviour(COMAS) ' 294

W. Steinwarz (Siempelkamp, Krefeld), A. Alemberti (ANSALDO, Genova),W. Ha'fher (Battelle, Eschborn), Z. Alkan, (RWTH University, Aachen) andM. Fischer (Siemens/KWU, Erlangen)

Investigations on heat transfer phenomena in prototypic core melt pools(HTCM) 302

W. Steinwarz (Siempelkamp, Krefeld), A. Alemberti (ANSALDO, Genova),W. Hafher (Battelle, Eschborn) and Z. Alkan (RWTH University, Aachen)

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Radiological source term

Applicability of PHEBUS-FP results to severe accident safety evaluations andmanagement measures' (invited)

M. Schwarz, Manager PHEBUS-FP programme, B. Clement, IPSN/DRS(Cadarache) and A.V. Jones, JRC/ISIS (Ispra)

Fission product release and speciation (RSP)C.G. Benson (AEA Technology, Winfrith), N. Davidovich (ENEA, Roma),M.P. Kissane (CEA/IPSN, Cadarache), M.K. Koch (Ruhr Universitat,Bochum), N. Kourti (JRC/ISIS, Ispra) and K. Miiller (IKE, UniversitatStuttgart)

Iodine chemistry (IC)S. Dickinson, H.E. Sims (AEA Technology, Winfrith), E. Belval-Haltier, D.Jacquemain, C. Poletiko (IPSN, Cadarache), F. Funke (Siemens, Erlangen),Y. Drossinos, E. Krausmann (JRC/ISIS, Ispra), B. Herrero (Instituto deTechnologia Nuclear, Madrid), T. Routamo (FORTUM PowerEngineering,Vantaa) and B.J. Handy (NNC, Knutsford)

Organic iodine chemistry (OIC)S. Dickinson, H.E. Sims (AEA Technology, Winfrith), E. Belval-Haltier, D.Jacquemain, C. Poletiko (IPSN, Cadarache), S. Hellman (Siemens,Erlangen), T. Karjunen (Finnish Centre of Radiation and Nuclear Safety,Helsinki) and R. Zilliacus (VTT Energy, Espoo)

Fission product vapour/aerosol chemistry in the primary circuit (CHEM)C. G. Benson (AEA Technology, Winfrith), M. Havranek (IKE, UniversitatStuttgart) and J. Jokiniemi (VTT Energy, Finland)

Revaporisation tests on samples from PHEBUS fission products (RVP)B. R. Bowsher, A.T. Tuson (AEA Technology, Winfrith), J. Jokiniemi (VTTEnergy, Espoo) and P.D. Bottomley (JRC/TUI, Karlsruhe)

Assessment of models for fission product revaporisation (REVAP)D.A. Williams (AEA' Technology, Winfrith), M.P. Kissane, I. Drosik (IPSN,Cadarache), I. Drossinos, F. Ezquerra Larrode (JRC/ISIS, Ispra), M.Havranek (Universitat Stuttgart) and J. Jokiniemi, K. Lehtinen (VTT Energy,Espoo)

Fission product release from molten pools (MP)C.G. Benson (AEA Technology, Winfrith), M.P. Kissane (IPSN,Cadarache), M. Koch (Ruhr-Universitat, Bochum) and H. Hein (Siemens,Erlangen)

Aerosol physics in containment (APC)T. Montanelli (IPSN, Cadarache), J.KJokiniemi, E.I. Kauppinen (VTTEnergy, Espoo) and T. Routamo (FORTUM Power Engineering,Vantaa)

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Benchmarking release, circuit and containment codes against PHEBUS FP(PHEBEN) 394

A.V. Jones, T.J. Haste (JRC/ISIS, Ispra), H.J. Allelein (GRS, Koln),F. Oriolo (Universita degli Studi di Pisa), F. De Rosa (ENEA, Bologna),B.R. Bowsher (AEA Technology, Winfrith), J. Lopez-Jimenez (CIEMAT,Madrid), F. Martin-Fuertes (Universidad Politecnica de Madrid), G. Sdouz(IEAFS, Seibersdorf), M. Kissane (IPSN, Cadarache), K. Miiller (IKE,Universitat Stuttgart) and J. Birchley (PSI, Villigen)

Archive for source term information and system models (ASTERISM) 402B.R. Bowsher, A.T. Tuson (AEA Technology, Winfrith), M. Delaval, A.V.Jones (JRC/ISIS, Ispra), E. Grindon, L.M. Dutton (NNC, Knutsford) and T.Montanelli (IPSN, Cadarache)

Source term leakage from containment (CONT-LEAK) 410P.N. Smith, A T Tuson (AEA Technology, Winfrith), L Grindon (NNC,Knutsford), H. Hein (Siemens, Erlangen), A. Fallot (IPSN, Saclay), J.Gauvain (CEA/DRN, Saclay), J.L. Droulas (EDF/SEPTEN, Villeurbanne),and F. Ezquerra Larrode (JRS/ISIS, Ispra),

A risk-based evaluation of the impact of key uncertainties on the prediction ofsevere accident source terms (STU) 419

M.L. Ang, E. Grindon, L.M. Dutton (NNC, Knutsford), P.C. Garcia-Sedano, •C.S. Santamaria (Union Iberoamericana de Tecnologia Electrica, Madrid), B.Centner, M. Auglaire (Tractebel, Bruxelles), S. Outa, T. Routamo(FORTUM Power Engineering,Vantaa), J. Jokiniemi (VTT Energy),V. Gustavsson, H. Wennerstrom (Vattenfall Energisystem, Stockholm), L.Spanier, M. Gren (Sydkraft Konsult AB, Sweden), M.H. Boschiero, J.L.Droulas (EDF/SEPTEN, Villeurbanne) and H.G. Friederichs, M. Sonnenkalb(GRS, Koln)

Containment performance and energetic threats

Plant life management - Nuclear safety related civil engineeringstructures (invited) ^ ' 431

J.P. McFarlane and L.M. Smith, British Energy Generation (UK)

Prevention and mitigation measures to ensure containment integrity (invited) 441B. De Boeck, Director Nuclear Safety AVN Vincotte (Brussels)

Multidimensional simulation of hydrogen distribution and turbulentcombustion in severe accidents (HDC) 450

U. Bielert, W. Breitung, A. Kotchourko, P.- Royl, W. Scholtyssek, A. Veser(FZK, Karlsruhe), A. Beccantini, F. Dabbene, H. Paillere, E. Studer (IPSN,Saclay), T. Huld, H. Wilkening (JRC/ISIS, Ispra), B. Edlinger, C. Poruba(Technische Universitat, Miinchen) and M. Movahed (Siemens)

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Improved modeling of turbulent hydrogen combustion and catalyticalrecombination for hydrogen mitigation (HYMI)

M. Jordan, A. Eder, B. Edlinger, F. Mayinger (TU MUnchen), M. Carcassi(Universita degli Studi di Pisa), M. Heitsch (GRS, Koln), M.A. Jimenez,M.J. Arribas, F. Martin-Fuertes, A. De Andres (Universidad Politecnica deMadrid), R. Monti (ANSALDO, Genova) and T. Kanzleiter (Battelle,Eschborn)

A simulation methodology for containment calculations (VOASM)A. Alemberti (ANSALDO, Genova), M. Carcassi (Universita degli Studi diPisa), M. Heitsch (GRS, Koln), J.M. Martin-Valdepeflas (UniversidadPolitecnica de Madrid) and B. Edlinger (TU Munchen)

Models and criteria for prediction of deflagration-to-detonation transition(DDT) in hydrogen-air-steam systems under severe accident conditions(H2DDT)

R. Klein (FUB, Berlin), W. Breitung (FZK, Karlsruhe), I. Coe (NNC,Knutsford), L. He (CNRS, Marseille), H. Olivier (RWTH, Aachen), W.Rehm (FZJ, Jiilich) and E. Studer (IPSN, Saclay)

Common experimental data base for the development of physical models andcorrelations for thermal-hydraulic containment analysis (DABASCO)

X. Cheng (FZK, Karlsruhe), P. Bazin (CEA/DRN, Grenoble), P. Cornet(CEA/DRN, Saclay), D. Hittner (Framatome, Paris), J.D. Jackson(Manchester School of Engineering), J. Lopez Jimenez (CIEMAT, Madrid),A. Naviglio (Universita degli Studi di Roma "La Sapienza"), F. Oriolo(Universita degli Studi di Pisa) and H. Plank (Siemens, Erlangen)

Benchmark on containment penetration sealing areas behaviour(ATHERMIP)

P: Vanini, E. Penno (ENEL, Roma), P. Becue (EDF/Septen, Villeurbanne),A. Orden Martinez (Empresarios Agrupados, Madrid) and G. Forasassi(CIRTEN - Universita degli Studi di Pisa)

Containment evaluation under severe accidents - Synthesis of the predictivecalculations and analysis of the first experimental results obtained on theCivaux mock-up (CESA)

L. Granger, C.Y. Rieg, J.-P. Touret, F. Fleury (EDF/SEPTEN,Villeurbanne), G. Nahas (IPSN, Fontenay aux Roses), R. Danisch(SIEMENS AG, Erlangen), L. Brusa (ENEL, Roma), A. Millard(CEA/LAMS, Saclay), C. Laborderie (ENS, Cachan), F. Ulm (LCPC, Paris),P. Contri (ISMES, Seriate), K. Schimmelpfennig (Stangenberg und Partners,Bochum), F. Barre (Coyne et Bellier, Paris), M. Firnhaber (GRS, Koln), J.Gauvain, N. Coulon (CEA/TTMF, Saclay), L.M.C. Dutton (NNC Ltd,Knutsford) and A. Tuson (AEA Technology, Dorset)

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Validation strategies for severe accident codes with special emphasis given tointegral codes (VASA) 520

HJ. Allelein (GRS, Koln), B.Turland (AEA Technology, Winfrith),G. Sdouz (ARC, Seibersdorf), K. Fischer (BIG, Eschborn), P. Giordano(IPSN, Cadarache), T. Dominguez (EA, Madrid), A. Siccama (NRG, Petten),R. Passalacqua (ENEA, Rome), W. Hering (FZK, Karlsruhe), M. Burger(IKE, Stuttgart), A.V. Jones (JRC/ISIS, Ispra), B. Raj Sehgal (RIT,Stockholm), H. Plank (Siemens, Erlangen), T. Steinrotter (Ruhr-Universitat,Bochum) and E. Pekkarinen (VTT, Espoo)

Interactions between severe accidents research and the regulatory positions inEuropean countries (ISARRP) 529

B. Raj Sehgal (RIT, Stockholm), S. Chakraborty (SFNI, Villigen), J. Peltier(IPSN, Clamart), J.A. Martinez (CSN, Madrid), J. Rohde (GRS, Koln) andM. Shanawany (HSE, London)

Future experimental containment facilities in the European Union (EUCOFA) 538T. Kanzleiter (Battelle, Eschborn), J. Gauvain (CEA/DRN, Saclay),F. Robledo (Consejo de Seguridad Nuclear, Madrid), F. Parozzi(ENEL/ATN, Milano), M. Fischer (Siemens, Erlangen), J. Rohde (GRS,Koln), M. Durin (IPSN, Fontenay-aux-Roses), H. Tuomisto (FORTUMPower Engineering,Vantaa), G.L. Vayssier (Nuclear Safety Consultancy,Leiden), B. Raj Sehgal (RIT, Stockholm), B. Boesmans (Tractebel,Bruxelles) and P.N. Smith (AEA Technology, Winfrith)

Accident management measures

Role of the man-machine interface in accident management strategies(invited) 547F. 0wre, OECD/HALDEN Reactor project (Norway)

Regulatory view on accident prevention and mitigation measures inSweden(invited) 556

0. Sandervag, Manager Reactor Safety Technology SKI (Stockholm)

Algorithm development for severe accident management application: someaspects on accident diagnosis and CSiF signal validation (ASIA) 561

M.L. Ang, A.F. Parsons (NNC, Knutsford), H. Cappon (Framatome, Paris),C. Fiche (CEA/SSAE, Saclay), M.A.C. Van Kranenburg (NRG, Petten) andJ.C. Tramas (CEA/LETI)

The development and demonstration of integrated models for the evaluationof severe accident management strategies (SAMEM) 570

M.L. Ang, K. Peers (NNC, Knutsford), E. Kersting, W. Fassmann (GRS,Koln), H. Tuomisto, P. Lundstrom, M. Helle (FORTUM,Vantaa), V.Gustavsson (Vattenfall Energisystem, Stockholm) and P. Jacobsson (SyconEnergiekonsult AB, Sweden)

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Severe accident management implementation and expertise in the EuropeanUnion (SAMIME)

G. Vayssier (NSC, Leiden), M.L. Ang (NNC, Knutsford), C. Fiche(CEA/DRN, Cadarache), M. Vidard (EDF/SEPTEN, Villeurbanne) C.Manuel (IPSN, Fontenay-aux-Roses), M.T. Otero (Vandellos NPP,Tarragona), J. Rohde (GRS, Koln), P.J. Bakker (NRG, Arnhem), H. Roth-Seefrid (Siemens, Erlangen), V. Gustavsson (Swedpower, SKI), D. Magnus(Belgatom, Brussels), M. van Haesendonck (WESE, Brussels), H. Tuomisto(Fortum, Vantaa), U. Schmocker (PSI, Villigen), J. Husarcek (UJD, SlovakRep.) and D. Vojnovic (SNSA, Ljubljana)

Boron dilution experiments (EUBORA)H. Tuomisto, T. Toppila (FORTUM, Vantaa), D. Alvarez (EDF, Chatou), R.Karlsson (Vattenfall, Aelvkarleby), R. Hertlein (Siemens, Erlangen),S. Langenbuch, M. Scheuerer (GRS, Garching), J. Oliveri, S. Cadet-Mercier(ISPN, Fontenay-aux-Roses), H. Cheng, B. Raj Sehgal (KTH, Stockholm), J.Lillington (AEA Technology, Winfrith), J. Hyvarinen (STUK, Helsinki), W.Van Hove (Tractebel, Brussels), P. Wakker (NRG, Arnhem), U. Rohde, T.Hohne (FZR, Dresden), F. De Grecy (CEA/DTP, Grenoble), J. Elter (PaksNuclear Power Plant), P. Miihlbauer (Nuclear Research Institute, Rez-Praha),M. Huggenberger, O. Fischer, P. Coddington (PSI, Villigen), Y. Bezrukov,and S. Logvinov (Gidropress, Podolsk)

Benchmark exercise on expert judgment techniques in PSA level 2 (BEEJT)G. Cojazzi, D. Fogli, G. Grassini (JRC/ISIS, Ispra), P. De Gelder, D.Gryffroy (AVN Vincotte, Bruxelles), R. Bolado (Universidad Politecnica deMadrid), E. Hofer (GRS, Garching), R. Virolainen (STUK, Helsinki), I.M.Coe (NNC, Knutsford), A. Bassanelli (ENEL, Roma), J. Puga (UNESA,Madrid), I. Papazoglou (National Centre for Scientific Research"Demokritos", Aghia Paraskevi), O. Zuchuat (HSK, Villigen), E. Cazzoli(ERI & Co.), J. Eyink (Siemens), G. Guida (Universita di Brescia), U.Pulkkinen, K. Simola (VTT, Espoo), D. Von Winterfeldt (DII) and A.Valeri, L. Pinola (former, at JRC-ISIS)

A dataset for level 2 probabilistic safety analysis studies (PSAL2)I.M. Coe (NNC, Knutsford), G. Cojazzi, M. Delaval (JRC/ISIS, Ispra), V.Gustavsson (Vattenfall Energisystem, Stockholm), P. Lizee, F. Talieu(EDF/SEPTEN, Villeurbanne) and H. Loffler (GRS, Koln)

Integrated sequence analysis and new approaches to human reliability(ISANEW)

B. Liwang (SKI, Stockholm), K. Andersson (Karinta-Konsult, Taby),G. Baumont (IPSN, Fontenay-aux-Roses), P.C. Cacciabue (JRC/ISIS, Ispra),V. Dang, S. Hirschberg (PSI, Villigen), E. Hollnagel (IFE, Halden), J.Hortal, J. Izquierdo (CSN, Madrid), P. Pyy (VTT, Espoo) and J.C. Williams(HSE, Bootle)

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Organisational factors: their definition and influence on nuclear safety(ORFA) 625

B. Wahlstrom (VTT, Espoo), R. Sola (CIEMAT, Madrid), A. Frischknecht(HSK, Villigen), G. Baumont (CEA/IPSN, Fontenay-aux-Roses), B. Wilpert,(TUB, Berlin) and C. Rollenhagen (Swedpower)

Joint safety research index (JSRI) 634J. Peltier (CEA/IPSN, Fontenay-aux-Roses), H. Weimann (FZ Seibersdorf),B. Arien (SCK/CEN, Mol), E. Nonboel (RISOE, Roskilde), T. Vanttola(VTT Energy, Espoo), R. Zipper (GRS, Koln), K Plitz (FZK, Karlsruhe), A.Jones (JRC/ISIS Ispra), G. Piolanti (ENEA, Bologna), J. Lopez-Jimenez(CIEMAT, Madrid), L. Pettil (SKI, Stockholm), I. Price (Health and SafetyExecutive, Merseyside), H. Van Rij (NRG, Petten) and P. Hosemann (PSI,Villigen)

Exploring innovative approaches /conceptual reactor safety features

Research needs for advanced safety concepts (invited) 645F. Mayinger, Professor Munich University

Industrial aspects of revisited high temperature reactors (invited) 654M. Lecomte, Adviser Research and Technology Framatome (Paris)

A system for emergency core cooling through high performance steaminjector (SYNTHESIS) 663

M. Valisi, L. Mazzocchi (ENEL, Milan), J. Meseth (Siemens, Offenbach amMain) and A. Achilli (SIET, Piacenza)

Assessment of passive safety injection systems of advanced light waterreactors (APSI) 673

J.Tuunanen (VTT Energy, Espoo), J.N. Lillington, G. Kimber (AEATechnology, Winfrith), F. D'Auria, M. Frogheri (Universita degli studi diPisa) and J. Vihavainen (Lappeenranta University of Technology, Finland)

European BWR-R&D cluster for innovative passive safety systems (IPSS) 682E.F. Hicken (FZJ, Jiilich), J. Hart (NRG, Petten), B. Schwinges (GRS,Koln), W.J.M. Siegers (KEMA, Arnhem), J. Dreier (PSI, Villigen), G.Cattadori (SIET, Piacenza), A.B. Van Dijk, P.H. Ludwig (Stork,Amsterdam) and H. Holmstrom (VTT Energy, Espoo)

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BWR physics and thermalhydraulics complementary actions to the BWRR&D cluster (BWRCA)

G.L Fiorini (CEA/DRN, Cadarache), E. Friesen (Siemens, Offenbach amMain), T. Van der Hagen (Delft University of Technology), J. LopezJimenez (CIEMAT, Madrid), P. Meloni (ENEA, Rome) and U. Rindelhardt(FZR, Rossendorf)

Technology enhancement for passive safety systems (TEPSS)J. Hart (NRG, Petten), W.J.M. Siegers (NRG, Arnhem), S.L. De Boer (StorkNucon, Amsterdam), M. Huggenberger (PSI, Villigen), J. Lopez Jimenez(CIEMAT, Madrid), J.L. Muftoz-Cobo Gonzalez (Universidad Politecnica deValencia) and F. Reventos Puigjaner (Universidad Politecnica de Catalunya,Barcelona)

Thermalhydraulics of passive decay heat removal systems (POOLTHY)D. Tenchine, M. Berthoux (CEA/DRN, Cadarache), J.U. Knebel (FZK,Karlsruhe), J.D. Jackson, P. An (Victoria University of Manchester) andA. Naviglio, G. Caruso (Universita degli studi di Roma "La Sapienza")

Safety-related innovative nuclear reactor technology elements - R&Dnetwork (SINTER)

W. von Lensa (FZJ-ISR, Julich), G.L. Fiorini, J. Porta (CEA/DRN,Cadarache), M.A. Chimeno (DTN, Madrid), F. Vettraino (ENEA, Rome),I. Tripputi (ENEL, Rome), F. Sevini (JRC/IAM, Petten), H. Van Rij (NRG,Petten), K. Foskolos (PSI, Villigen), M. Klein (SCK/CEN, Mol), R.Sairanen, B. Wahlstrom (VTT, Espoo), F. Schmidt (IKE, Stuttgart) and K.Kussmaul, J. Foehl (MPA, Stuttgart)

Innovative containment cooling system for double concrete containment(INCON)

L. Brusa (ENEL, Roma), L. Cinotti (ANSALDO, Genova), F. De Cachard(PSI, Villigen), G. Forasassi, F. Oriolo (CIRTEN Universita degli Studi diPisa), L. Mazzocchi (CISE, Milano), R. Perezagua (Empresarios AgrupadosInternational, Madrid) and M. Vidard (EDF/SEPTEN, Villeurbanne),

Containment behaviour'in the event of core melt with gaseous and aerosolreleases (CONGA)

E. Friesen, J. Meseth (Siemens, Offenbach am Main), S. Giintay, D. Suckow(PSI, Villigen), J. Lopez Jimenez, L. Herranz, V. Peyres (CIEMAT, Madrid),G.F. De Santi, A. Krasenbrink (JRC/ISIS, Ispra) and M. Valisi,L. Mazzocchi (ENEL, Milan)

Industrial needs in R&D for the safety and competitiveness of the nextgeneration of reactors (MICA)

D. Hittner (Framatome, Paris), A. Chevalier (NNC, Knutsford), M. DeValkeneer (Belgatom, Brussels), A. Gonzalez (EAI, Madrid), J. Jung(Siemens, Erlangen), K. Ketelaar (NRG, Petten), B. Kuczera (FZK,Karlsruhe), S. Nisan (CEA/DRN, Cadarache), G. Petit (EDF/SEPTEN,Villeurbanne), M. Pezzili (ENEA, Roma), G. Proto (Ansaldo, Genova), H.Vayrynen (FORTUM, Vantaa) and W. von Lensa (FZJ, Julich),

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Assessment of safety and innovative technology for HTR power generatingplant (INNOHTR) 763

D. Hittner (Framatome, Paris), Ph. Chapelot (CEA, Saclay), A. Chevalier(NNC, Knutsford), B.R.W. Haverkate (NRG, Petten), J. Magill (FZK,Karlsruhe), G. Proto (Ansaldo, Genova), H. Reutler (HTR, Frankfurt),N. Taylor (JRC/IAM, Petten) and W. von Lensa (FZJ, Julich).

List of participants 773

Index of authors 797

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