 Tommi Jokinen comes from Nokia, Finland. "The main problem with welding thick stainless steel structures up to 60 mm thickness are the distortions," Tommi explains. "In many cases in the ITER machine it will only be possible to access and weld those thick sections from one side. The so-called balance welding, which needs both side access, is thus impossible. This leads to greater distortions. But there are some methods to reduce distortions, for example using narrow gap techniques, which means less material to be melted and thus less distortions. Still, whenever you melt steel by welding you'll get distortions." His experience in welding of ITER components finally brought Tommi to France, to work for ITER itself. Here he is currently finalizing the welding specifications for the divertor components. Tommi will be working in Cadarache for just one year, nevertheless his family has moved with him. The Jokinens are now living in Pierrevert, the two oldest of their three children (aged 2, 5 and 7) go to the International School in Manosque at the moment and the youngest one will start there in September. "The two years in Germany and now the experience here in France working for the ITER project has been a unique opportunity for me. And for the family it has been great chance to learn new languages and new cultures. We like it here!" << return to Newsline #35 |
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