This Sunday, November 17, concentrations of sulfur dioxide in the atmosphere higher than normal were noted at the industrial site on the Adisseo platform in Saint-Clair-du-Rhône by Atmo Auvergne-Rhône-Alpes, an organization air quality monitoring. “We had a peak in the middle of the morning, around 10 a.m. Gradually the concentration levels decreased but the values remained high for a few hours because there was little wind,” explains Claire Chappaz, on-call manager at Atmo.
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The alert threshold of 500 g/m3 was exceeded for 3 hours. “This morning, we had the restart of an amino acid unit, which is what led to these significant releases,” explains Nicolas Penduff, executive of the Adisseo company.
The group is one of the world leaders in the production of additives and nutritional solutions for animal feed. “It’s not an accident, it’s a normal phase,” underlined Nicolas Penduff. The concentration values remained high after falling below the alert threshold. They returned to normal around 4 p.m.
