Experts of fire impact experts at the General Department of Criminal Evidence and Criminology in cooperation with the General Department of Criminal Investigations and Investigations in Dubai Police succeeded in re-representing the facts of the fire scenario of a building under construction at Expo 2020 site with complete accuracy and professionalism, to reveal the main reason behind the fire spark , And the secret hidden by an employee and engineer at the company operating on the site to evade responsibility.

Experts revealed the effects of fires after conducting 12 scientific experiments that the cause of the outbreak of a sudden disruption in the welding operations of the two ends of two pipes in the building, due to the high temperature of the metal wire thermal coil, which led to its adhesion to the tube and its impact extending to the path of the inner tube causing the fire, pointing That the welding operations led to a rise in the temperature of the pipe to more than 350 degrees Celsius, and the occurrence of an internal ignition, as it refuted the claim of a worker and an engineer in the company operating on the site that there are no works in the building at the time of the fire.

According to the results of the fire experts, the criminal investigation and investigation team worked on the investigation of the accident, to show that the welding worker at the company executing the project was taking on his regular work assignments, so he went to the tube and performed welding operations for connecting two tubes, but a technical defect occurred and he stopped working, and worked on Re-store the equipment in the designated room without observing the safety procedures required in this situation.

It turned out that the worker then went to the bathroom, and within five minutes he noticed that there was a complete evacuation of the workers at the site with the outbreak of the fire, so he left the place immediately and went to his work official “engineer”, and informed him of what happened to him from the technical defect and failure to observe procedures Safety, so the engineer asked him not to inform anyone of the defect in order not to involve himself and the company in the accident.

The search and investigation conducted by the General Directorate of Criminal Investigation and Investigations revealed the private messages circulating among the workers, which call them to "claim that they did not work at the accident site at the time of the fire, contrary to the truth", while Dubai police re-simulated the incident with high accuracy and professionalism after the results of the investigation, and approval The worker and the engineer of the occurrence of welding operations on the day of the fire and trying to conceal them from the real facts.

The Commander-in-Chief of Dubai Police, Lieutenant General Abdullah Khalifa Al-Marri, emphasized that the ability to re-represent the fire incident with high accuracy based on the results of investigations and scientific experiments, is a new achievement added to the record of Dubai Police’s achievements in dealing with professionalism with various types of investigations, through a group of experts working in The General Administration of Criminal Evidence and Criminology, and competent individuals, officers and specialists from the General Department of Criminal Investigations and Investigations, have harnessed all modern capabilities and artificial intelligence techniques in their work, valuing the efforts of working teams in reaching these results.

Reem Bint Ibrahim Al Hashemi, Minister of State for International Cooperation Affairs and Director General of the Dubai Expo 2020 office, praised the great efforts made by the Dubai police crews, stressing that the professionalism and accuracy shown by the work teams attest to the outstanding capabilities they possess, and the great development of the police work system Dubai at all levels.

In turn, the Assistant Commander-in-Chief for Criminal Investigation Affairs, Major General Khalil Ibrahim Al-Mansoori, described the results achieved by fire inspection experts in cooperation with the Criminal Investigations and Investigations team, as "quality" in the field of dealing with fire investigations and revealing their causes, and reenacting and simulating the incident with great accuracy, praising With the tremendous efforts of the two work teams that dealt with highly professionalism with all the minute details in the fire scene, taking and examining samples carefully, setting scenarios and assumptions and conducting scientific experiments, leading to the issuance of the results that contributed to knowing the involvement of the worker and the engineer in hiding the reality of a flaw in the welding process and not taking Safety procedures.

The experiments denied the existence of an external heat source

The director of the General Department of Criminal Evidence and Criminology, Major General Dr. Ahmed Eid Al-Mansouri, confirmed that experts who examined the effects of fires moved to the location of the incident as soon as they received the fire outbreak report, and began their duties in inspecting the building, which was one of three buildings on the construction site, indicating that the Dubai Police A working group of fire experts was formed to find out the reasons that led to its occurrence, especially in light of the workers ’assertion that no one was in the place of the accident at the time of the fire. He added that, in light of the workers ’talk about the absence of construction work in the building, the experts put all the expected scenarios and assumptions that one of them might be the real cause of the fire, and then they started carrying out 12 scientific experiments to reveal which might be the cause of the fire, and dealt with Two scenarios: The first is that the cause of the fire from inside the tube itself, and the second is that the source of the fire from outside the tube, with setting all the assumptions and possible scenarios for the outbreak of the fire because of the things in the basement of wood, plastic and other things.

Al-Mansouri added that fire experts have put the possible causes of such fires, either as a result of cigarettes or through direct flame, or lighting in the basement, or a rise in the temperature of the piping connectors, and experiments have been conducted on these causes inside and outside the tube.

He pointed out that the results of scientific experiments that were conducted on the fact that cigarettes were the cause of the fire, proved that they could not happen due to the need for the tube to a temperature of 350 degrees Celsius for ignition, indicating that experts conducted tests and experiments to ignite cigarettes inside the tube, and outside it on the tube waste (sawdust) ), But the results were negative.

He added that «based on the results, we were able to deny the presence of an external heat source for the fire, and exempt the source of lighting fixtures, the woods in the place, and the sources outside the tube and prove that the fire was from inside the tube and resulted from welding operations, which the worker confirmed that he made for it.

- a technical malfunction of a welder and not follow safety procedures led to the outbreak of the fire.

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