Pollution
Humain
Environnement
Economique

Around 10:20 am, an employee noticed the release of smoke on a silo’s sunflower dryer. All site personnel were evacuated. The fire detection system (reliance on temperature probes) was activated, triggering an alarm and placing the drying installation in safe operating mode. Gas and electricity supplies were suspended. The seeds were drained via the “quick removal” hatch, yet the hot spot identified below this opening had not been extinguished. The sprinkling system switched on and external first responders were notified at 10:35 am. Fire-fighters brought the blaze under control with 1 water hose, after which seeds located between the quick drainage hatch and the drying column extraction hatch were removed. The fire crew wrapped up their response by 1:15 pm after a final verification of the absence of hot spots using a thermal camera. The sunflower collected in the lower dryer hopper, which had not been discharged by the silo handling system due to a clustering of seeds swollen with water, was extracted by a mobile suction device that afternoon. Seed clogging between the brackets, caused by the elevated product humidity and its high rate of impurities, led to heating of a plug. The silo operator set limits for accepting the latest batch of collected sunflower at 12% humidity and 10% impurities.