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 reason behind the outbreak of the fire is "a sudden imbalance in the welding operations of the two ends of two pipes in the building, due to the high temperature of the metal of the thermal coil wire, which led to its adhesion to the tube and its impact extending to the path of the inner tube causing the fire Pointing out that the welding operations led to a rise in the temperature of the tube to more than 350 degrees Celsius, and an internal ignition occurred on the day of the accident, what was refuted by 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 investigation and criminal investigation team worked on the investigation of the accident, to show that the welding worker in the company executing the project was carrying out his regular work tasks on a daily basis at the work site, so he went to the tube and performed the welding operations for connecting two pipes, but a technical defect occurred With him, he stopped working, and worked to re-store the equipment in the room designated for that, without observing the safety procedures required in this situation.
It was also found that the worker then went to the bathroom, and within 5 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 with a technical defect and not observing it For safety procedures, the engineer asked him not to inform anyone of the defect, because there was no witness to his welding process, and therefore there is no need to involve himself and the company in the fire.
The search and investigation conducted by the General Directorate of Criminal Investigations and Investigations revealed the private messages circulating among workers, which call them to "claim that they did not work at the scene of the accident 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 were issued, And the approval of the worker and the engineer on the occurrence of welding operations on the day of the fire and trying to conceal them from the real facts.
High cooperation and coordination
Commander-in-Chief of Dubai Police Lieutenant-General Abdullah Khalifa Al-Marri praised the exceptional efforts of experts examining the effects of fires in the General Department of Forensic Evidence and Criminology, and conducted accurate and professional scientific experiments to determine the true cause of the fire, and to provide them with a comprehensive explanation of how it erupted with extreme accuracy, praising in At the same time, with the great cooperation and coordination between experts who examined the effects of fires and the teams of investigations and criminal investigations, who started the search and investigation process and listened to the testimony of witnesses and workers present in the place, to discover the truth of what happened.
The team, Abdullah Khalifa Al-Marri confirmed 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 achievements in dealing with professionalism with various types of investigations, through a group of experts working in the General Department of Criminal Evidence and science The crime, and competent individuals, officers and specialists from the General Department of Investigations and Criminal Investigations, have harnessed all modern capabilities and artificial intelligence techniques in their work, valuing the efforts of the working teams in reaching these results, and stressing the permanent readiness of the Dubai Police in various public departments and the police center to deal with all types of accidents .
Professionalism and accuracy
Reem bint Ibrahim Al Hashemi, Director General of the Dubai Expo 2020 office, praised the great efforts made by Dubai police crews, stressing that the professionalism and accuracy shown by the work teams attest to the distinct capabilities they possess, and the great development enjoyed by the Dubai police work system On all levels.
She said: "I thank all the employees of Dubai Police, headed by the Commander-in-Chief of Dubai Police, Lieutenant-General Abdullah Khalifa Al-Marri, for their dedication and continuous support and for their unparalleled efforts in preserving the safety and security of all, and protecting lives and property at Expo 2020 especially, and throughout Dubai." .
Al-Hashemi added: “There is no doubt that the efforts of the Dubai Police affiliates and their dedication to providing security and safety in the Expo constitute a vital and essential factor for our success. We realize that the task before them is very large, but we are all confident that we are in safe hands on our journey to the Expo and during the upcoming global event, Due to the competencies and capabilities owned by Dubai Police. "
Dealing with the details
In turn, the Assistant Commander-in-Chief for Criminal Investigation Affairs, Major General Khaleel Ibrahim Al-Mansoori, described the results achieved by fire inspection experts in cooperation with the Investigations and Criminal Investigation team, as "qualitative" in dealing with fire investigations and revealing their causes, and reenacting and simulating the incident with great accuracy, praising the efforts The mighty of the two work teams who handled highly professionally with all the fine details of the fire scene, taking and examining the 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 actions safety.
12 scientific experiments
On dealing with the fire incident, the director of the General Department of Forensic 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 tasks in inspecting the building, which was one of three buildings in the construction site, Pointing out that Dubai Police formed a working group of fire experts to know the reasons that led to its occurrence, especially in light of the workers ’assertion that no one was in the place of the incident at the time of the fire.
He pointed out that the experts immediately began to inspect the place accurately during the days following the extinguishing of the fire, and it was found that the point of the outbreak of the fire was in one of the pipes near the roof in the basement area, and connected to a water tank for a water fountain, then from it the fire spread and spread to the rest of the components and contents of the building .
He added: "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 may be the cause of the fire, and dealt with 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 hypotheses and possible scenarios for the outbreak of the fire because of the things in the basement of wood, plastic materials and others.
Major-General Al-Mansouri added: Fire experts have also established 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 were conducted on these causes inside and outside the tube.
He pointed out that the results of scientific experiments that were made on the fact that cigarettes are the cause of the fire, proved that it 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 waste of the tube. The resulting mulch, but the results were negative.
He added: Also, a team of experts who examined the effects of fires carried out experiments on burning waste outside the tube by direct flame, experiments on the possibility of igniting the tube by surrounding lighting inside the basement, and working on experiments to burn wood that was spread in the place, whether by connecting its flame to the tube directly or From a distance, and studying how the flame is directed, but all these scientific experiments have confirmed that the fire will spread to the outside of the tube and not inside it, and therefore these scientific hypotheses are not true to the cause of the fire.
He pointed out that the experts also conducted experiments on the pipe connections, and the results showed that all these connections in all their types in case of ignition do not reach a temperature of 350 degrees to ignite the tubes from the inside.
He continued: "Then the experts worked on an experiment on the type of connections inside the tube, in which an electrical current is connected to it from the outside, through a special mobile device for that, and the results indicate that the heat that results from it does not reach the degree of ignition of the ebony, but in If a defect occurs, the temperature rises to 350 degrees Celsius, and it may lead to ignition of the doors from the inside, which did not happen.
He pointed out that fire experts noted that some tubes contain waste and by conducting experiments on them, it was found that they do not reach the point of ignition of the tube and that the fire will be visible and can be extinguished immediately, indicating that the recent scientific experiment regarding welding process has shown that it is the main cause of the fire inside the tube Due to the high temperature it causes, it ignites it.
He concluded: "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 present 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."