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Chemical accident
A chemical accident, also commonly known as a chemical leak is the unintentional release of one or more hazardous chemicals, which could harm human health and the environment. Such events include fires, explosions, and release of toxic materials that may cause people illness, injury, or disability. Chemical accidents can be caused for example by natural disasters, human error, or deliberate acts for personal gain. Chemical accidents are generally understood to be industrial-scale ones, often with important offsite consequences. Unintended exposure to chemicals that occur at smaller work sites, as well as in private premises during everyday activities are usually not referred to as chemical accidents.
Process safety is the engineering discipline dealing with chemical accident hazards understanding and management. Process safety's scope extends however to fires and explosions from hazardous materials generally not referred to as 'chemicals', such as refined and unrefined hydrocarbon mixtures.
Chemical accidents are relatively common in the United States, with a significant accident occurring on average multiple times per week. Most chemical accidents never make national headline news. American chemical industry public relations professionals claim that such accidents are becoming less frequent but the U.S. Environmental Protection Agency states that they are increasing in frequency, with higher average annual rates of population evacuations and of people needing medical treatment resulting from chemical accidents. Texas is the leading U.S. state in chemical accidents.
The United Kingdom responds to around 1,000 chemical incidents per year, the majority of these were relatively short-lived fires. Majority of the large-scale incidents occurred at industrial, commercial, and agricultural sites. These large-scale fires do cause significant amounts of damage however the after math can be worse by releasing toxic smoke, asbestos, and other potential hazards chemicals. Many of the UK's chemical hazard analysis and statistics are funded by the HPRUs or the health protection research units.
Since 2015 to 2021 China has experienced 295 chemical accidents which had led to the deaths of 1325 people. The areas most affected in China are those with low GDP such as Shandong, Tianjin, Jiangsu, and Hebei Provinces. Out of the providences precisely mentioned from 2016 to 2021 chemical accident and casualties have been an upward trend.
The most dangerous chemical accident recorded in history was the 1984 Bhopal gas tragedy in India, in which more than 3,000 people died after highly toxic methyl isocyanate was released at a Union Carbide pesticides factory. The release happened after the storage tank safety valve had failed to contain the excess pressure created by the exothermic reaction between water and methyl isocyanate. The accident was caused by a faulty valve that let the water into the tank. The safety refrigeration unit for the tank also was not functional since it did not have any coolant.
The 2020 Beirut explosion was one of the biggest non-nuclear explosions in history. It happened when approximately 2,750 tons of ammonium nitrate inside a warehouse at the port exploded. The improper storage alongside a fire breaking out near the warehouse caused the explosion. The explosion killed 218 people, injured 7,000, and displaced 300,000 people.
Two chemical explosions occurred in a warehouse at a port in Tianjin, China which contained flammable chemicals such as calcium carbide. Chinese officials have still yet to identify the direct cause of the explosion however officials have stated the likely cause is that the calcium carbide mixed with water and an explosion occurred. The explosion was the equivalent to three tons of TNT where the second explosion had the power of 21 tons of TNT. The explosion destroyed a significant portion of the surrounding port, tossing shipping containers. 720 people were taken to the hospital and out of the 720, 60 were critically injured. The people living in the surrounding area had to evacuate their homes and were moved to local schools.
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Chemical accident
A chemical accident, also commonly known as a chemical leak is the unintentional release of one or more hazardous chemicals, which could harm human health and the environment. Such events include fires, explosions, and release of toxic materials that may cause people illness, injury, or disability. Chemical accidents can be caused for example by natural disasters, human error, or deliberate acts for personal gain. Chemical accidents are generally understood to be industrial-scale ones, often with important offsite consequences. Unintended exposure to chemicals that occur at smaller work sites, as well as in private premises during everyday activities are usually not referred to as chemical accidents.
Process safety is the engineering discipline dealing with chemical accident hazards understanding and management. Process safety's scope extends however to fires and explosions from hazardous materials generally not referred to as 'chemicals', such as refined and unrefined hydrocarbon mixtures.
Chemical accidents are relatively common in the United States, with a significant accident occurring on average multiple times per week. Most chemical accidents never make national headline news. American chemical industry public relations professionals claim that such accidents are becoming less frequent but the U.S. Environmental Protection Agency states that they are increasing in frequency, with higher average annual rates of population evacuations and of people needing medical treatment resulting from chemical accidents. Texas is the leading U.S. state in chemical accidents.
The United Kingdom responds to around 1,000 chemical incidents per year, the majority of these were relatively short-lived fires. Majority of the large-scale incidents occurred at industrial, commercial, and agricultural sites. These large-scale fires do cause significant amounts of damage however the after math can be worse by releasing toxic smoke, asbestos, and other potential hazards chemicals. Many of the UK's chemical hazard analysis and statistics are funded by the HPRUs or the health protection research units.
Since 2015 to 2021 China has experienced 295 chemical accidents which had led to the deaths of 1325 people. The areas most affected in China are those with low GDP such as Shandong, Tianjin, Jiangsu, and Hebei Provinces. Out of the providences precisely mentioned from 2016 to 2021 chemical accident and casualties have been an upward trend.
The most dangerous chemical accident recorded in history was the 1984 Bhopal gas tragedy in India, in which more than 3,000 people died after highly toxic methyl isocyanate was released at a Union Carbide pesticides factory. The release happened after the storage tank safety valve had failed to contain the excess pressure created by the exothermic reaction between water and methyl isocyanate. The accident was caused by a faulty valve that let the water into the tank. The safety refrigeration unit for the tank also was not functional since it did not have any coolant.
The 2020 Beirut explosion was one of the biggest non-nuclear explosions in history. It happened when approximately 2,750 tons of ammonium nitrate inside a warehouse at the port exploded. The improper storage alongside a fire breaking out near the warehouse caused the explosion. The explosion killed 218 people, injured 7,000, and displaced 300,000 people.
Two chemical explosions occurred in a warehouse at a port in Tianjin, China which contained flammable chemicals such as calcium carbide. Chinese officials have still yet to identify the direct cause of the explosion however officials have stated the likely cause is that the calcium carbide mixed with water and an explosion occurred. The explosion was the equivalent to three tons of TNT where the second explosion had the power of 21 tons of TNT. The explosion destroyed a significant portion of the surrounding port, tossing shipping containers. 720 people were taken to the hospital and out of the 720, 60 were critically injured. The people living in the surrounding area had to evacuate their homes and were moved to local schools.