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Mobile Acetylene Cylinders : Hazard Potential Not To Be Underestimated!

Mobile acetylene cylinders : Hazard potential not to be underestimated!

  • Flash
Mobile acetylene cylinders are present in all sectors of activity owing to their common use on welding machines. Even if they look like risk free, these cylinders are real hazard potential ! Five major accidents in France since the beginning of 2018 drive us to remind to users and owners the risks associated to these cylinders.
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Video “From Incident To Media Crisis”

Video “From incident to media crisis”

  • Movie
How does a technically insignificant incident turn into a media frenzy? This new film, produced by the BARPI, explains the sequence of malfunctions that led to the release of a highly olfactory component. A timeline presents how the media crisis gains momentum. Discover the experience of those who witnessed the crisis first hand and the lessons learnt from the event through numerous interviews.
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Runaway Reactions, Case Studies, Lessons Learned

Runaway reactions, case studies, lessons learned

  • Press article
Runaway reactions are a major source of industrial accidents. They can occur in a wide array of sectors, including chemicals, petrochemicals, food processing, plastics and rubber manufacturing, and metalworking and are primarily caused by a loss of process control. The processes involved are quite diverse, encompassing chemical reaction, polymerisation and distillation, among others. The loss of process control is related with various factors that are examined in this article. Several accidents that occurred in France and recorded in the ARIA1 [...]
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Runaway reaction in a chemical plant

  • Accident report
  • FRANCE
The summary of this accident has not yet been translated. In the meantime, please refer to the French summary :

A 9h20, au sein d'une usine chimique, une augmentation rapide et soudaine de la température se produit dans un réacteur de fabrication d'un organomagnésien de 4 000 l. A 9h30, le personnel présent sur l'atelier procède au noyage à l'eau du milieu réactionnel. Par précaution, le POI est déclenché et dure quelques minutes. Le milieu en cours d'hydrolyse provoque une forte ébullition. La pression dans le réacteur augmente jusqu'à [...]

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50339

  • Accident report
  • FRANCE
The summary of this accident has not yet been translated. In the meantime, please refer to the French summary :

Vers 21 h, une fuite de phosgène et de chlorobenzène se produit à l'intérieur d'une bulle de confinement dans une usine de production de substances chlorées. Elle est détectée par des capteurs présents dans cette bulle. L'asservissement de ces capteurs permet l'orientation automatique de l'air de la bulle vers la colonne d'abattage à la soude. A 0h20, une fuite plus importante est détectée. Les opérateurs mettent le circuit en s [...]

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49735

  • Accident report
  • FRANCE
The summary of this accident has not yet been translated. In the meantime, please refer to the French summary :

Vers 15h15, un rejet de chlorure de vinyle monomère (CVM - substance cancérigène, mutagène, reprotoxique) se produit dans une usine de fabrication de matières plastiques de base.

Vers 14h50, suite au déclenchement de l'alimentation électrique principale du site et au défaut de basculement sur le secours électrique 20 kV, les groupes diesel de secours démarrent afin d'alimenter les installations de secours et de contrôle-comma [...]

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Hydrofluoric Acid : The Worst Of All Acids?

Hydrofluoric acid : the worst of all acids?

  • Flash
Despite being produced 200 times less than sulphuric acid (1 M vs. 200 M tonnes/year), the ARIA database has recorded nearly 80 accidents involving hydrofluoric acid (HF) (vs. 220 for H2SO4). A series of recent accidents serves to recall its hazards, especially the serious consequences in the event of its release...
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Leakage of ethylene under pressure in a petrochemical complex

  • Accident report
  • FRANCE

Damaged compressor : dual-stage compressor compressing ethylene from 3 to 33 bar. It operates alternately with the main compressor. On the day of the accident, it had been in operation for 43 days since its last maintenance five months prior. It was located next to two other compressors (Nos. 2 and 3). The latter two had been shut down and automatically isolated upon activation of the gas detectors, which was not the case for the damaged compressor No. 1, which had to be isolated manually from the control room.

In a petrochemical complex, a [...]

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46801

  • Accident report
  • FRANCE

Two explosions ripped through a petrochemical complex at night

The blasts occurred around 3 am in the storage zone of a petrochemical plant: 2 tanks ignited and their floating roofs were damaged. The 1st tank contained 11,300 m³ of pyrolysis gasoline (a mix of diesel, butene, toluene and butadiene). The 2nd tank, located 300 m away, was holding 48,000 m³ of naphtha. On-site fire-fighters, backed up by neighbouring facilities' response teams, arrived on the scene in large numbers. The complex operator activated the internal emergency plan and n [...]

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Chronic leakage of toxic effluents in a chemical plant

  • Accident report
  • ALLEMAGNE

In a chemical plant, a leak of effluents containing acetonitrile (a harmful and flammable solvent) from the process wastewater system lead to groundwater contamination. As the network was used only sporadically, the duration of the leak could not be accurately determined. A maximal estimate gave 557 days. The potential loss is estimated to be 61 t of acetonitrile.

Wells were established to try to recover the pollutant through pumping and to sample the groundwater. Three tonnes of acetonitrile were recovered by pumping operations over a period [...]

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