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Chemical Accident
A chemical accident is the unintentional release of one or more Chemical hazard, 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. Frequency U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Hazard
Chemical hazards are Hazard, hazards present in Dangerous goods, hazardous chemicals and hazardous materials. Exposure to certain chemicals can cause Acute health hazard, acute or long-term adverse health effects. Chemical hazards are usually classified separately from biological hazards (biohazards). Chemical hazards are classified into groups that include Asphyxiant gas, asphyxiants, Corrosive substance, corrosives, Irritant (biology), irritants, sensitization (immunology), sensitizers, carcinogens, mutagens, teratogens, reactants, and Combustibility and flammability, flammables. In the workplace, exposure to chemical hazards is a type of occupational hazard. The use of personal protective equipment may substantially reduce the risk of adverse health effects from contact with hazardous materials. Long-term exposure to chemical hazards such as Silicon dioxide, silica dust, Exhaust gas, engine exhausts, tobacco smoke, and lead (among others) have been shown to increase risk of Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methyl Isocyanate
Methyl isocyanate (MIC) is an organic compound with the molecular formula CH3NCO. Synonyms are isocyanatomethane and methyl carbylamine. Methyl isocyanate is an intermediate chemical in the production of carbamate pesticides and Haffmann Bromamide Degradation (such as carbaryl, carbofuran, methomyl, and aldicarb). It has also been used in the production of rubbers and adhesives. As an extremely toxic and irritating compound, it is very hazardous to human health. MIC was the principal toxicant involved in the Bhopal gas disaster, which short-term killed 4,000–8,000 people and caused permanent injury and premature deaths to approximately 15,000-20,000. It is also a very potent lachrymatory agent. Physical properties Methyl isocyanate is a colorless, poisonous, Lachrymatory agent, lachrymatory (Tears, tearing agent), flammable liquid.Union Carbide Corporation "Methyl Isocyanate" Product Information Publication, F-41443, November 1967. It is soluble in water to 6–10 parts per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Directive 96/82/EC
Council Directive 96/82/EC of 9 December 1996 on the control of major-accident hazards involving dangerous substances (as amended) is a European Union law aimed at improving the safety of sites containing large quantities of dangerous substances. It is also known as the Seveso II Directive, after the Seveso disaster. It replaced the Directive 82/501/EC, Seveso Directive and was in turn modified by the Seveso III directive (2012/18/EU). See also * Seveso Directive (other), Seveso Directive *Control of Major Accident Hazards Regulations 1999 External links Council Directive 96/82/EC of 9 December 1996 on the control of major-accident hazards involving dangerous substances* [http://ec.europa.eu/environment/seveso/index.htm European Commission page about the Seveso Directives] Seveso III Directive (2012/18/EU) European Union directives European Union directives by number, 1996/82 1996 in law 1996 in the European Union Environmental law in the European Union Regulation of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seveso Disaster
The Seveso disaster was an industrial accident that occurred around 12:37 on 10 July 1976, in a small chemical manufacturing plant approximately north of Milan in the Lombardy region of Italy. It resulted in the highest known exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in residential populations, which gave rise to numerous scientific studies and standardized industrial safety regulations, including the European Union's Seveso III Directive. This accident was ranked eighth in a list of the worst man-made environmental disasters by ''Time'' magazine in 2010. Location of disaster The Seveso disaster was named after Seveso, the community most affected, which had a population of 17,000 in 1976. Other affected neighbouring communities were Meda (19,000), Desio (33,000), Cesano Maderno (34,000) and to a lesser extent Barlassina (6,000) and Bovisio-Masciago (11,000). The industrial plant, located in Meda, was owned by the company (Meda Chemical Industries S.A., o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flixborough Disaster
The Flixborough disaster was an explosion at a chemical plant close to the village of Flixborough, North Lincolnshire, England, on Saturday, 1 June 1974. It killed 28 and seriously injured 36 of the 72 people on site at the time. The casualty figures could have been much higher if the explosion had occurred on a weekday, when the main office area would have been occupied. A contemporary campaigner on process safety wrote "the shock waves rattled the confidence of every chemical engineer in the country". The disaster involved (and may well have been caused by) a hasty equipment modification. Although virtually all of the plant management personnel had chemical engineering qualifications, there was no on-site senior manager with mechanical engineering expertise. Mechanical engineering issues with the modification were overlooked by the managers who approved it, and the severity of potential consequences due to its failure were not taken into account. Flixborough led to a widespr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Union
The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are Geography of the European Union, located primarily in Europe. The union has a total area of and an estimated population of over 449million as of 2024. The EU is often described as a ''sui generis'' political entity combining characteristics of both a federation and a confederation. Containing 5.5% of the world population in 2023, EU member states generated a nominal gross domestic product (GDP) of around €17.935 trillion in 2024, accounting for approximately one sixth of global economic output. Its cornerstone, the European Union Customs Union, Customs Union, paved the way to establishing European Single Market, an internal single market based on standardised European Union law, legal framework and legislation that applies in all member states in those matters, and only those matters, where the states ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcium Carbide
Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of . Its main use industrially is in the production of acetylene and calcium cyanamide. The pure material is colorless, while pieces of technical-grade calcium carbide are grey or brown and consist of about 80–85% of (the rest is CaO ( calcium oxide), ( calcium phosphide), CaS ( calcium sulfide), ( calcium nitride), SiC (silicon carbide), C (carbon), etc.). In the presence of trace moisture, technical-grade calcium carbide emits an unpleasant odor reminiscent of garlic. Applications of calcium carbide include manufacture of acetylene gas, generation of acetylene in carbide lamps, manufacture of chemicals for fertilizer, and steelmaking. Production Calcium carbide is produced industrially in an electric arc furnace from a mixture of lime and coke at approximately . This is an endothermic reaction requiring per mole and high temperatures to drive off the carbon monoxide. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tianjin Explosion Destroyed Buildings (8)
Tianjin is a direct-administered municipality in northern China on the shore of the Bohai Sea. It is one of the nine national central cities, with a total population of 13,866,009 inhabitants at the time of the 2020 Chinese census. Its metropolitan area, which is made up of 12 central districts (other than Baodi, Jizhou, Jinghai and Ninghe), was home to 11,165,706 inhabitants and is also the world's 29th-largest agglomeration (between Chengdu and Rio de Janeiro) and 11th- most populous city proper. Tianjin is governed as one of the four municipalities (alongside Beijing, Shanghai, and Chongqing) under the direct administration of the State Council of China. The city borders Hebei Province and Beijing Municipality, bounded to the east by the Bohai Gulf portion of the Yellow Sea. Part of the Bohai Economic Rim, it is the largest coastal city in Northern China and part of the Jing-Jin-Ji megapolis. In terms of urban population, Tianjin is the seventh largest city in China. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonium Nitrate
Ammonium nitrate is a chemical compound with the formula . It is a white crystalline salt consisting of ions of ammonium and nitrate. It is highly soluble in water and hygroscopic as a solid, but does not form hydrates. It is predominantly used in agriculture as a high-nitrogen fertilizer. Its other major use is as a component of explosive mixtures used in mining, quarrying, and civil construction. It is the major constituent of ANFO, an industrial explosive which accounts for 80% of explosives used in North America; similar formulations have been used in improvised explosive devices. Many countries are phasing out its use in consumer applications due to concerns over its potential for misuse.Ammonium nitrate sold by ton as U.S. regulati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safety Science
''Safety Science'' is a monthly peer-reviewed scientific journal published by Elsevier covering research on all aspects of human and industrial safety. The editor-in-chief is Georgios Boustras ( European University Cyprus),. The journal was established in 1976 as the ''Journal of Occupational Accidents'', with Herbert Eisner as founding editor-in-chief. In 1990, the aims and scope of the journal were expanded, and the journal obtained its current name. Editors-in-chief Since 1990, the following persons are or have been editors-in-chief: * 1990–2009: Andrew Hale * 2010–2012: Kathryn Mearns * 2013–2017: Jean-Luc Wybo * 2018–present: Georgios Boustras Abstracting and indexing The journal is abstracted and indexed in: According to the ''Journal Citation Reports'', the journal has a 2023 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2020 Beirut Explosion
On 4 August 2020, a major explosion occurred in Beirut, Lebanon, triggered by the ignition of 2,750 tonnes of ammonium nitrate. The chemical, confiscated in 2014 from the cargo ship and stored at the Port of Beirut without adequate safety measures for six years, detonated after a fire broke out in a nearby warehouse. The explosion resulted in at least 218 fatalities, 7,000 injuries, and approximately 300,000 displaced individuals, alongside property damage estimated at US$15 billion. The blast released energy comparable to 1.1 TNT equivalent, kilotons of TNT, ranking it among the Largest artificial non-nuclear explosions#Largest accidental artificial non-nuclear explosions by magnitude, most powerful non-nuclear explosions ever recorded and the largest single detonation of ammonium nitrate. The explosion generated a Earthquake, seismic event measuring 3.3 in magnitude, as reported by the United States Geological Survey. Its effects were felt in Lebanon and neighboring regions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exothermic Reaction
In thermochemistry, an exothermic reaction is a "reaction for which the overall standard enthalpy change Δ''H''⚬ is negative." Exothermic reactions usually release heat. The term is often confused with exergonic reaction, which IUPAC defines as "... a reaction for which the overall standard Gibbs energy change Δ''G''⚬ is negative." A strongly exothermic reaction will usually also be exergonic because Δ''H''⚬ makes a major contribution to Δ''G''⚬. Most of the spectacular chemical reactions that are demonstrated in classrooms are exothermic and exergonic. The opposite is an endothermic reaction, which usually takes up heat and is driven by an entropy increase in the system. Examples Examples are numerous: combustion, the thermite reaction, combining strong acids and bases, polymerizations. As an example in everyday life, hand warmers make use of the oxidation of iron to achieve an exothermic reaction: :4Fe + 3O2 → 2Fe2O3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
