Developing the IFMIF RAM planning

The availability specifications in IFMIF project are very high to reach it. A RAM planning has been proposed in order to develop this task. As a first step, a critical review of the previous RAM activities developed during the last 10 years in the framework of the IFMIF program is made. In this first step the software tools available for RAM studies are analyzed and it is proposed that RiskSpectrum should be used in the future in the IFMIF project. It is an interactive tool for reliability and safety analysis and it allows a complete organization analysis and presentation of risk and reliability information. As a first validation example, the target facility has been modelled using this code in order to benchmark the previous RAM results calculated by Markov chains. The results obtained are according to the previous RAM analysis carried out in conceptual design activity. Also, the need both of contrasted failure rate data and of developing an updated RAM analysis including last changes in the IFMIF design project is showed as compulsory.