In a classified 2,000 sq.m. joiner’s shop that builds wood staircases, at 7 am an employee noted the presence of incandescent wood particles at the level of sleeve filters upon start-up of the dust removal system. This machining waste suction device was immediately shut down. Station workers extinguished the fire outbreak using a combination of extinguishers and nozzles, then notified emergency services. When the rescue team arrived at 7:40 am, a second fire had broken out in the silo storing sawdust and wood chips suctioned by the dust removal device. The 12-m high tank had been filled to one-fourth of its 80-m3 capacity and thus contained a large volume of dust. Given the risk of onsite explosion, local policemen set up a safety perimeter and evacuated the shop’s 14 employees as well as personnel at a neighbouring company. Fire-fighters flooded the silo from the tank’s manholes and proceeded to drain the vessel via a side hatch under the cover of 2 nozzles; the wood chips were then spread over the ground and sprinkled. The last embers were extinguished around noon; the emergency crew performed an inspection at 3 pm. Fourteen employees are laid off, time to repair the installations either damaged by flames or fouled by extinction water. The Classified Facilities inspector, who had arrived onsite at 2 pm, requested that the operator submit a detailed report on the accident, accompanied by a set of measures adopted to avoid its recurrence. According to the Inspectorate, particles becoming incandescent at the time of sawing had been suctioned, causing a fire to smoulder at the level of the sleeve filters, in particular following system shutdown at the end of the day; installation restart then triggered combustion by exposure to air draughts.