During welding work at a petrol station, an explosion occurs in the manhole of a fuel tank. The operation in question involved welding plugs onto the bodies of tanks which had just been retired and replaced by new, jacketed tanks. The two workers completing the job were employees of an external company; one is killed and the other injured. According to witness accounts and information in the report, no fire permit had been issued and no safety plan had been established. The tanks should have been shrouded and filled with foam, but apparently the work was performed prior to this operation. In a second instance procedure, the Annecy criminal court sentences the person in charge of the outsourcer company, this company’s works foreman and the maintenance manager of the petrol station’s operating company to respective suspended prison terms of 18 months, 6 months and 8 months.