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Hazards can be classified in several ways. These categories are not mutually exclusive which means that one hazard can fall into several categories. For example, water pollution with toxic chemicals is an anthropogenic hazard as well as an environmental hazard. One of the classification methods is by specifying the origin of the hazard.
Chemical hazards are usually classified separately from biological hazards (biohazards). Chemical hazards are classified into groups that include asphyxiants, corrosives, irritants, sensitizers, carcinogens, mutagens, teratogens, reactants, and flammables. [1] In the workplace, exposure to chemical hazards is a type of occupational hazard.
Examples of biological hazards include bacteria, viruses, fungi, other microorganisms and their associated toxins. They may cause a myriad of diseases, from flu to more serious and potentially fatal diseases. [4] Psychological hazards are aspects of work and work environments that can cause psychological harm or mental ill-health.
Physical hazards include earthquakes, floods, fires, and tornadoes. Physical hazards often have both human and natural elements. For example, flood problems can be affected by the natural elements of climate fluctuations and storm frequency, and by land drainage and building in a flood plain, human elements. [5]
This encompasses many types of hazards, including chemical hazards, biological hazards (biohazards), psychosocial hazards, and physical hazards. In the United States, the National Institute for Occupational Safety and Health (NIOSH) conduct workplace investigations and research addressing workplace health and safety hazards resulting in ...
Pictogram Usage Acute toxicity (oral, dermal, inhalation), categories 1, 2, 3; e.g. manganese heptoxide (fire diamond rating at health hazard is 4) GHS06: Toxic Acute toxicity (oral, dermal, inhalation), category 4
Signal word: "Danger" or "Warning" will be used to emphasize hazards and indicate the relative level of severity of the hazard, assigned to a GHS hazard class and category. Some lower level hazard categories do not use signal words. Only one signal word corresponding to the class of the most severe hazard should be used on a label. GHS hazard ...
Hazardous wastes are defined under RCRA in 40 CFR 261 and divided into two major categories: characteristic and listed. [26] The requirements of the RCRA apply to all the companies that generate hazardous waste and those that store or dispose of hazardous waste in the United States. Many types of businesses generate hazardous waste.