Florence Plain

Explosion at the Eni depot in Calenzano: 5 victims. Sabotage excluded, seizure triggered

The President of the Republic, Sergio Mattarella, telephoned the President of the Region of Tuscany, Eugenio Giani, to get information on the injured, to bring solidarity to the families

by Silvia Pieraccini

Aggiornato l’11 dicembre 2024 alle ore 14.50

Calenzano, esplosione nel sito Eni

4' min read

4' min read

CALENZANO - The body of the last person reported missing in the explosion at the Eni depot in Calenzano has also been found. The number of victims thus rises to five. According to information, they were found in the canopy of the loading area. The injured total 26.

The explosion occurred in an area defined as the loading point where tankers refuel. More than one vehicle was involved in the flames as well as the structure's canopy. The A1 exit was closed and trains stopped. Masks were distributed at the scene.

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Esplosione in una raffineria a Calenzano

Cause to be ascertained

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The causes of the accident, which could have been even more serious had it involved the tank farm, are unknown at the moment. The Eni plant, precisely because it stores fossil fuels, was considered among those at risk of a major accident. The Careggi hospital, which is only a few kilometres away, and other hospitals in the area were alerted. Traffic was disrupted: both motorway traffic, due to the closure of the Calenzano exit on the A1 motorway, the nerve centre of the country's north-south connections, which was later reopened, and the interruption of the railway line from Bologna to Florence and from Florence to Prato, Pistoia and Lucca. Replacement buses were activated.

Esplosione Calenzano, l'incendio non interessa i serbatoi

Civil Protection alert

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The Civil Protection's warning system worked, albeit a little late. At 11.25 a.m., the alarm for the incident that had happened an hour earlier at the Eni industrial plant in Calenzano, in the province of Florence, near the I Gigli shopping centre, with 'presence of dangerous substances', the message read: "Find shelter indoors and do not go near the plant", was the advice given in Italian and English to those who were within a five-kilometre radius of the incident, i.e. in the area between Prato and Florence, where many had heard the roar, glass shaking and seen black smoke spreading.

Esplode deposito Eni a Calenzano

Photogallery18 foto

The municipalities of Calenzano, Campi Bisenzio and Sesto Fiorentino have advised the population to keep their windows closed. The accident has caused - as far as has been ascertained so far - two deaths, nine injured, two of whom are in serious condition, and three missing. Eni, for now, has limited itself to specifying in a note that the explosion did not occur in the fuel depot but in the area of the loading shelters, where the tankers are refuelled: "The flames do not affect the tank farm in any way," the company specified. The fire brigade is completing the extinguishing work. Rescue workers are at work, with ambulances ready to leave the depot, while the Prefecture of Florence has convened the Rescue Coordination Centre.

The testimony of an injured person: "As if thunder had crashed through us"

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"I have never seen anything like this in my life, it felt like thunder had crashed through us". These are the words of one of the injured. The 50-year-old man was in his office about 100 metres from the site of the explosion. He was one of the five injured who were transported directly from there to the emergency room of Prato's Santo Stefano hospital. None of them suffered serious injuries, only cuts and traumas that were apparently reabsorbable within a few days. 'We did not understand what happened, because everything happened in a few seconds. The explosion,' says the injured witness, 'was so strong that we jumped several metres inside our office, the glass shattered and injured us. It was the most traumatic experience of my whole life. I am still stunned'.

Mattarella phones Giani

President of the Republic Sergio Mattarella telephoned the President of the Region of Tuscany Eugenio Giani to get information on the injured, to bring solidarity to the families of the victims and to thank the rescuers who intervened with great professionalism. This was learnt at the Quirinale.

Sabotage excluded

From the first technical investigations ordered by the Prato Public Prosecutor's Office in the depot, no explosives were found, therefore, the possibility that the explosion could be attributed to possible sabotage is ruled out. The public prosecutor's office in Prato confirms that it has opened a file for multiple culpable homicide, malicious collapse of buildings or other disasters, and malicious removal of precautions against accidents at work.At the depot, extraordinary maintenance was being carried out, which had become necessary on equipment that would have needed it for years, according to the initial findings of the public prosecutor's office just over 48 hours after the explosion in the loading bay area.The public prosecutor's office is investigating the maintenance methods with regard to the triggering of the explosion.

Deposit under sequestration

The entire depot was placed under seizure by the Prato Public Prosecutor's Office in order to carry out the necessary technical investigations to establish the causes of the explosion at the loading shelters. Eni, it is learnt from an investigating source, has asked to intervene to properly dispose of potentially polluting water, but the entire fuel supply, storage and distribution activity "must remain stopped" until it is necessary.An operator reported at 10 a.m., 21 minutes and 30 seconds an anomaly in the loading shelter area.

Search at several Eni sites

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Searches were carried out in the 48 hours following the explosion in Calenzano (Florence) in several Italian sites of Eni, not only in the offices of the depot where there was the explosion on 9 December. The searches were aimed at acquiring documents on the management of the site, and also on the appointment of the external company in charge of extraordinary maintenance and the state of the equipment where the explosion took place.

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