Proceedings of the Third Meeting of the OECD-NEA Expert Group on Accident Tolerant Fuels for LWRs, 3-5 March 2015, OECD-NEA HQ

Under the guidance of the OECD-NEA Nuclear Science Committee, the expert group acts as a forum for scientific and technical information exchange on advanced light water reactor (LWR) fuels with enhanced accident tolerance. The expert group focusses on the fundamental properties and behaviour under normal operations and accident conditions for advanced core materials and components (fuels, cladding, control rods, etc.). The materials considered are applicable to Gen II and Gen III Light Water Reactors, as well as Gen III+ reactors under construction. The objective of the expert group is to define and coordinate a programme of work to help advance the scientific knowledge needed to provide the technical underpinning for the development of advanced LWR fuels with enhanced accident tolerance compared to currently used zircaloy/UO₂ fuel systems, as well as other non-fuel core components with important roles in LWR performance under accident conditions. This document brings together the available presentations (slides) given at the Third Meeting of the OECD-NEA Expert Group on Accident Tolerant Fuels for LWRs. Content: 1 - Task Force 1 (Systems assessment) meeting, 3-4 March 2015: - French evaluation of ATF Concepts (J. Bischoff, AREVA); - Technology Readiness Levels - TRL - for Fuels (K. Pasamehmetoglu, INL); - TRL-definition for advanced fuel concept applied for commercial LWRs in Japan (M. Kurata, JAEA); - Application of TRLs in NNL (E. Johnston, NNL); - Technology Readiness Levels for Advanced Nuclear Fuel and Materials (S. Bragg-Sitton, INL); 1a - Definition of the illustrative scenarios: - AREVA's proposal concerning scenario for Accident Tolerant Fuel studies (P. Gandrille); - A Simplified Accident Scenario (L. Hallstadius); - Accident Scenarios for ATF Performance Evaluation of BWR and PWR in Japan (H. Ohta, CRIEPI); 1b - Related NEA activities: - Working Party on Multi-scale Modelling of Fuels and Structural Materials for Nuclear Systems - WPMM, Expert Group on Multiscale Modeling of Fuels - M2F (S. Massara, NEA); - NSC/WPRS Activities on Reactor Fuel Performance - EGRFP, and IFPE database (S. Massara, NEA); 2 - Joint Task Force 2 (Cladding/core materials) and Task Force 3 (Fuel concepts) meeting, 3-4 March 2015: 2a - SiC and SiC/SiC composites: - Update on SIC/SIC projects in OASIS (A. Kohyama, Muroran Institute of Technology); - Systematic Technology Evaluation Plan for SiC/SiC: Execution Update (K. Terrani, ORNL); - SIC composite-based materials for enhanced accident tolerant fuel of LWRs: recent results on the chemical compatibility with UO₂ (J. Braun, CEA); 2b - Coated Zr-alloys: - Update of KIT activities on ATF claddings (M. Steinbrueck, KIT); - OECD NEA EGATFL Coatings sub-Task Force (B. Heuser, Univ. Illinois); - On-going R and D, update and some perspectives on chromium coated Zr based claddings for enhanced accident tolerant fuel of LWRs (J.C. Brachet, CEA); - Recent progress on surface modified Zr-alloy claddings (H.G. Kim, KAERI); - Status of testing of commercially available PVD coatings at the Halden Reactor Project (R. Van Nieuwenhove, OECD/Halden); 2c - Advanced Steels: - Development of Engineering Grade FeCrAl Alloys for Clad (K. Terrani, ORNL); - ODS steel data survey and analysis (2008-2014) (A. Kohyama, Muroran Institute of Technology); - Advanced ODS FeCrAl Alloys As Accident Tolerant Fuel Cladding (Sebastien Dryepondt et al.) - Ferritic Steels as Accident Tolerant Fuel Cladding for Commercial Light Water Reactors (E. Dolley, GE); 2d - Refractory metals: - Refractory Metal Cladding and Mo-alloy Development for Accident Tolerant Fuel (A. Sowder for Bo Cheng, EPRI); 2e - Improved UO₂: - Recent progress on micro-cell UO₂ pellets (J.H. Yang, KAERI); - ATF Fuel - Enhanced UO₂ (J. Tulenko, Univ. Florida); 2f - High Density Fuel: - High density fuels (M. Puide, Westinghouse); 2g - Coated Particle Fuel: - Coated Particle Fuel FCM Replacement Fuel for LWRs (Y. Yang, KAERI); - Technology Readiness Levels (TRL) for Fuels (K. Pasamehmetoglu, INL); 3 - Expert Group meeting, 5 March 2015: - EDF prerequisites for an irradiation of a limited number of ATF Experimental Fuel Rods in a commercial reactor (N. Waeckel, EDF); 3a - Updates on national programmes on ATF: - Update on NNL Programmes on ATF (E. Johnston, NNL); - Accident Tolerant Fuel R and D status in China (K. Pasamehmetoglu for T. Liu, CGN); 3b - Overview of NEA related activities: - Working Party on Scientific Issues of the Nuclear Fuel Cycle - WPFC, Expert Group on Innovative Fuels - EGIF (S. Cornet, NEA); - The OECD-NEA thermodynamics of advanced fuels - International database (TAF-ID) Project (Ch. Gueneau, CEA)