Tank cooling, on Monday (17), after toxic gas leak was controlled Michel Castro/Rede Amazônica Most of the 648 people treated after exposure to styrene gas, a flammable and toxic substance, in Manaus had contact with the product in the workplace and were exposed to the gas for around three hours, according to a report released on Monday (20) by Manaus City Hall. The survey brings together data on services carried out in public and private networks after the leak recorded at the company Innova, in the Industrial District, last Wednesday (15). According to the Municipal Health Department (Semsa), 67% of patients reported that they were at work when they came into contact with styrene. Another 19% said they were at home when they smelled the chemical and felt sick. 10% reported being outdoors. The average time of exposure to the gas was three hours. Adults between 20 and 59 years old were the most affected, but there were also cases of children and adolescents, including children under 1 year old. ? Join the g1 AM channel on WhatsApp According to Semsa, 78% of patients presented respiratory symptoms and 20% had skin changes. As of 3pm on Monday, 648 people had been treated and only one patient remained hospitalized. Toxic gas leak in Manaus is contained after six days The survey also records two deaths that remain under investigation to verify a possible relationship with exposure to styrene. One of the cases is a 67-year-old man who died on Thursday (16), after seeking care with reports of feeling unwell. The other involves a 60-year-old man who died after being admitted to a private unit with respiratory problems on Saturday (18). Searches for assistance The greatest demand for assistance occurred in the two days following the spill, according to the city hall. On Thursday (16), 364 consultations were recorded. On Friday (17), another 163 patients sought health services. Over the next three days, demand dropped to 30 appointments. Since the start of the incident, the Mobile Emergency Care Service (Samu 192) removed 13 people who needed emergency care after exposure to the gas. Semsa reported that it continues to monitor the epidemiological scenario and monitor patients exposed to styrene, even after controlling the leak. According to the ministry, monitoring is a priority for people with symptoms, workers directly involved, pregnant women, children, the elderly and patients with pre-existing respiratory or cardiovascular diseases. Expert begins investigation after gas leak is contained in company in the Industrial District, in Manaus Resident of area close to toxic gas leak in Manaus says that surrounding population never received guidance on accidents Company maintained uninterrupted production at factory in Manaus to empty tank from which styrene monomer gas leaked, says MTE Gas leak in Manaus: area of 300 meters around factory remains isolated on third day after incident Leak is contained and expertise investigates the causes of the incident On Sunday (19), the Amazonas Military Fire Department (CBMAM) reported that measurements carried out at the site confirmed that there was no longer any emission of styrene gas. Based on the evaluation, the activities were released. "At this moment we have not found any residue of styrene gas either in the surroundings or within the isolated area. We have zero emissions from the affected tank", stated the general commander of CBMAM, colonel Orleilso Muniz. Despite the containment, the Fire Department will continue working at the factory to keep the tank cool. According to the commander, removing the stored product and deactivating the structure could take months. After the technical assessments, a committee formed by state bodies, in addition to the Manaus Free Trade Zone Superintendence (Suframa) and the Amazonas Regional Engineering and Agronomy Council (Crea-AM), authorized the resumption of activities in the industries of the Manaus Industrial Pole (PIM), state schools and public services in the region. As a result, classes in the affected state schools were resumed, as well as the operation of the Pronto Atendimento ao Cidadão (PAC) Studio 5 and the factories that had suspended activities as a precaution. On Monday (20), experts from the Technical-Scientific Police Department (DPTC) carried out an examination at the factory to help identify the causes of the incident. Experts from Amazonas arrive at Innova to carry out expertise after a gas leak in Manaus Jucélio Paiva/Rede Amazônica Company accumulates R$ 22.4 million in fines Innova was also fined more than R$ 22.4 million by municipal and state bodies. The Amazonas Environmental Protection Institute (Ipaam) imposed a fine of R$12.5 million for an environmental infraction related to atmospheric pollution. Manaus City Hall imposed two fines totaling R$9.9 million for air, soil and water pollution. The incident The styrene monomer leak was recorded at 5:36 pm on Wednesday, at Innova Unit IV. The strong odor of the chemical was noticed in neighborhoods close to the Industrial District and led to the immediate evacuation of a shopping mall located close to the company. Styrene monomer is used in the manufacture of plastics, synthetic rubbers and expanded polystyrene (Styrofoam). According to experts, exposure to the product through inhalation can cause irritation to the eyes, nose and throat, as well as headache, dizziness and nausea. Since the incident, teams from the Amazonas Military Fire Department (CBMAM) have been working to cool the tank to control the temperature and avoid new risks. The main hypothesis investigated by the corporation is a spontaneous reaction inside the structure. INFOGRAPHIC - Gas leak leaves an isolated area in Manaus. g1