1. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 1 Agenda Kick Off Meeting of the contract EFDA-ENEA 05/1252 - Task TW5-SEA 4.2 “Update Failure Mode and Effect Analysis (FMEA) for ITER” Garching, October 17 th 2005 9.00Introduction - Status of FMEAs for ITER - Aim of the Contract & MeetingS.Ciattaglia 9.20Methodology, an ex.of previous FMEA. Information needed from DesignersT.Pinna 10.00Description of Systems ECH A. Sakasai 10.40Coffee break 11.00 11.40 WDS ICH D.Murdoch D.Swain 12.20Lunch 13.20 14.00 Diagnostics Vacuum Pumping C.Walker M.Wykes 14.40Coffee break 15.00DiscussionAll 15.45Summary: Reference Documents, Planning and Monitoring, ActionsAll 16.00 Closure of the meeting

2. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 2 Failure Mode and Effect Analysis (FMEA) is a useful tool for safety and availability assessment A systematic approach is particularly important in complex devices, like ITER, with limited operating experience The results of FMEA addresses deterministic design and bounding accident analysis to evaluate the radioactive releases to population and workers This impact has to be inside the release design limits for ITER that are below the threshold for evacuation FMEA and the deterministic analyses will form part or will be the reference docs for the PSAR Introduction

3. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 3 SOURCE TERMS ASSESSMENT Normal working conditions Occupational dose PIE Thermodynamic transients Aerosols and H3 transport Containments Release from the plant DCF Overall Plant Safety Analysis FMEA Radioactive waste Identification&classification Operational&Decomm waste Management On-site Recycling Final disosal General safety analysis approach Effluents PST EST DCF man*Sv/y dose/sequence to MEI frequency*dose Quantity and waste categories Sv/y Inventory evaluation Radioactive Energies Magnetic Chemical Fluids …. Introduction

4. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 4 Status of FMEAs for ITER Accident sequence analyses performed for ITER are documented in the ITER Generic Site Safety Report (GSSR) issued in July 2001. GSSR Volume X addresses the identification of postulated accident event sequences, through FMEA, i.e., off-normal events which may result in hazardous consequences. Detail of its application has varied by system, because analysis has proceeded in parallel with the evolution of the ITER design, resulting in systems being studied at various stages of their design maturity. Some systems have not been covered by a detailed component-level study and some of the studies are based on the 1998 ITER design.

5. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 5 SystemsNotes FMEA done before 2001 (GSSR) Tokamak Water Cooling Systems Tritium Systems (TEP, SDS, ISS) NBI Magnets On magnet, probability to have a helium leak inside the cryostat is missing FMEA done after 2001  RH  Cryoplant  Coil power supply Status of FMEAs for ITER

6. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 6 PIEs (Vol X, GSSR) Magnets1 Vacuum Vessel15 FW/Bk CWS13 Divertor CWS9 Fueling system8 Divertor RH5 Cryostat9 Heat rejection system6 Vacuum pumping4 Cryoplant2 Coil Power supplies6 Electrical power network11 Neutral beam11 Hot cell6

7. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 7 FMEA non yet planned HVAC, ADS, VDS CODAC Plasma Control System PI-Fuelling system Hot Cells Drainage System Maintenance states for the tokamak, tritium building and hot cell source terms Review of FMEA done before 2001: changes in the confinement aspects of port cells, Vacuum Vessel Pressure Suppression System venting, TCWS vault, etc. as noted in TCM-7 (October 2002) require more detailed assessment Status of FMEAs for ITER

8. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 8 Objectives of present contract Development of the following FMEAs  Cask operation (KoM already done, 14 Sept 05) Vacuum pumping IC H&CD EC H&CD Diagnostics Water Detritiation System

9. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 9 "Define in detail the task, the methodology, the reference design documents, the information needed from Designers, the relevant planning of deliverables and meetings” T.Pinna will present an example of FMEA already done ITER Designers should –describe the systems (status of the art): main characteristics, operation/duty cycle, –point out possible malfunctions and interfaces with safety function/systems, –indicate reference documents and also possible design options under consideration The task should progress through exchange of information-documents between T.Pinna & Designers and if necessary with focused meetings too Output of the task: –PIE’s for further deterministic analysis –DCRs Ultimate aim of the task: FMEA results should be also agreed/shared by Designers Aim of the KoM Meeting

10. EFDA EUROPEAN FUSION DEVELOPMENT AGREEMENT 10 Planning