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Events, such as fire, have been considered in ITER documentation of low probability and a general approach has been defined in [Technical basis for the ITER final design, EDA Documentation Series I, No. 22, IAEA, Vienna, 2001] to be developed later for the ITER specific site. It was said that “these hazards will be treated according to the industrial safety regulations and practices of the host country”. In the framework of studies for the European ITER site in Cadarache, an assessment of fire hazard has been done in order to ensure compliance with French safety requirements. In this report, a summary of existing laws is presented and an example of the deterministic approach to be followed for the preliminary safety report (PSR) is given on the analysis of tritium building design.

The licensing procedure for ITER in Europe in the framework of the French regulations is a non-prescriptive approach based on a continuous dialogue between the nuclear installation owner (or its representative) and the safety authority. In this paper, the licensing procedure and main safety issues, which are being studied in this process, are presented.

The TJ-II is a four period, low magnetic shear stellarator, with high degree of configuration flexibility (rotational transform from 0.9 to 2.5) which has been operating in Madrid since 1998 (R=1.5 m, a

An advanced heavy ion beam probing diagnostic (HIBP) based on simultaneous utilization of two different systems for the secondary ions detection (a multiple cell array detector and 30° Proca-green electrostatic energy analyzer) has been developed for the TJ-II flexible heliac. This innovative design aims at enlarging the HIBP capabilities in order to allow the instantaneous measurements of electron density and plasma potential profiles together with their respective fluctuations. This paper presents the detailed description of the main parts of the HIBP equipment and their characteristics obtained during the first operation on TJ-II. Special attention is employed to the control and data acquisition system built on two VME controllers. The results of the diagnostic beam carrying through the magnetic structure of TJ-II into secondary beam line are presented and compared with the trajectory calculations. The problems of plasma loading of the detection system and HX-ray excitement by the probing beam are considered together with the ways of their solution.