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Hazardous Material : ウィキペディア英語版
Dangerous goods

Dangerous/hazardous goods are solids, liquids, or gases that can harm people, other living organisms, property, or the environment. They are often subject to chemical regulations. In the United States, United Kingdom and sometimes in Canada, dangerous goods are more commonly known as hazardous materials, (abbreviated as HAZMAT or hazmat). "Hazmat teams" are personnel specially trained to handle dangerous goods. Dangerous goods include materials that are radioactive, flammable, explosive, corrosive, oxidizing, asphyxiating, biohazardous, toxic, pathogenic, or allergenic. Also included are physical conditions such as compressed gases and liquids or hot materials, including all goods containing such materials or chemicals, or may have other characteristics that render them hazardous in specific circumstances.
In the United States, dangerous goods are often indicated by diamond-shaped signage on the item (see NFPA 704), its container, and/or the building where it is stored. The colors of each diamond in a way has reference to its hazard, i.e., flammable is indicated with red, because fire and heat are generally of red color, and explosive is indicated with orange, because mixing red (flammable) with yellow (oxidising agent) creates orange. Nonflammable/nontoxic gas is indicated with green, due to all compressed air vessels being this color in France after World War II, and France being where the diamond system of hazmat identification originated.
==Handling==
Mitigating the risks associated with hazardous materials may require the application of safety precautions during their transport, use, storage and disposal. Most countries regulate hazardous materials by law, and they are subject to several international treaties as well. Even so, different countries may use different class diamonds for the same product. For example, in Australia, Anhydrous Ammonia UN 1005 is classified as 2.3 (Toxic Gas) with sub risk 8 (Corrosive), whereas in the U.S. it is only classified as 2.2 (Non Flammable Gas).
People who handle dangerous goods will often wear protective equipment, and metropolitan fire departments often have a response team specifically trained to deal with accidents and spills. Persons who may come into contact with dangerous goods as part of their work are also often subject to monitoring or health surveillance to ensure that their exposure does not exceed occupational exposure limits.
Laws and regulations on the use and handling of hazardous materials may differ depending on the activity and status of the material. For example, one set of requirements may apply to their use in the workplace while a different set of requirements may apply to spill response, sale for consumer use, or transportation. Most countries regulate some aspect of hazardous materials.
In the United States, transportation of hazardous materials is regulated by the Hazardous Materials Transportation Act.
==Global regulations==
The most widely applied regulatory scheme is that for the transportation of dangerous goods. The United Nations Economic and Social Council issues the ''UN Recommendations on the Transport of Dangerous Goods'', which form the basis for most regional, national, and international regulatory schemes. For instance, the International Civil Aviation Organization has developed dangerous goods regulations for air transport of hazardous materials that are based upon the UN Model but modified to accommodate unique aspects of air transport. Individual airline and governmental requirements are incorporated with this by the International Air Transport Association to produce the widely used IATA ''Dangerous Goods Regulations'' (DGR).〔(【引用サイトリンク】publisher=IATA )〕 Similarly, the International Maritime Organization (IMO) has developed the International Maritime Dangerous Goods Code ("IMDG Code", part of the International Convention for the Safety of Life at Sea) for transportation of dangerous goods by sea. IMO member countries have also developed the HNS Convention to provide compensation in case of dangerous goods spills in the sea.
The Intergovernmental Organisation for International Carriage by Rail has developed the Regulations concerning the International Carriage of Dangerous Goods by Rail ("RID", part of the Convention concerning International Carriage by Rail). Many individual nations have also structured their dangerous goods transportation regulations to harmonize with the UN Model in organization as well as in specific requirements.
The Globally Harmonized System of Classification and Labeling of Chemicals (GHS) is an internationally agreed upon system set to replace the various classification and labeling standards used in different countries. GHS will use consistent criteria for classification and labeling on a global level.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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