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:''Not to be confused with intrinsic safety, a particular technology for electrical systems operating in potentially flammable atmospheres. In the chemical and process industries, a process has inherent safety if it has a low level of danger even if things go wrong. Inherent safety contrasts with other processes where a high degree of hazard is controlled by protective systems. As perfect safety cannot be achieved, common practice is to talk about ''inherently safer design''. “An inherently safer design is one that avoids hazards instead of controlling them, particularly by reducing the amount of hazardous material and the number of hazardous operations in the plant.”〔() Heikkilä, Anna-Mari. ''Inherent safety in process plant design. An index-based approach''. Espoo 1999, Technical Research Centre of Finland, VTT Publications 384. ISBN 951-38-5371-3〕 ==Origins== The concept of reducing rather than controlling hazards stems from British chemical engineer Trevor Kletz in a 1978 article entitled “What You Don’t Have, Can’t Leak” on lessons from the Flixborough disaster,〔Kletz, T.A., (1978) ''Chemistry and Industry'' pp, 287–292 “What You Don’t Have, Can’t Leak”〕 and the name ‘inherent safety’ from a book which was an expanded version of the article.〔Kletz, T.A., (1984) ''Cheaper, Safer Plants or Wealth and Safety at Work –Notes on Inherently Safer and Simpler Plants'' IChemE Rugby, UK〕 A greatly revised and retitled 1991 version〔Kletz, T. A., (1991) ''Plant Design for Safety – A User-Friendly Approach'', Hemisphere, New York〕 mentioned the techniques which are generally quoted. (Kletz originally used the term ''intrinsically safe'' in 1978, but as this had already been used for the special case of electronic equipment in potentially flammable atmospheres, only the term ''inherent'' was adopted. Intrinsic safety may be considered a special subset of inherent safety.) In 2010 the American Institute of Chemical Engineers published its own definition of IST.〔Center for Chemical Process Safety and the American Institute of Chemical Engineers, Final Report: Definition for Inherently Safer Technology in Production, Transportation, Storage, and Use (July 2010) 1-54.https://www.aiche.org/sites/default/files/docs/embedded-pdf/ist_final_definition_report.pdf〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Inherent safety」の詳細全文を読む スポンサード リンク
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