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Title: Electronic Equipment Classification In Hazardous Locations
Author: Brad R. Erickstad
Source: 1997 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1997
Abstract: The use of electrical equipment in hazardous locations is not new and weve witnessed the safe use of electricity such industrial locations for many decades. However, growth in the use of electronic equipment in natural gas hazardous locations has grown dramatically over the last ten years. Semiconductor and microprocessor technologies are driving more and more electrical and electronic devices out of the shop and office and into areas which may have significant concentrations of natural gas. Common sense tells us that a mixture of natural gas in air combined with electricity is not a safe combination. Nevertheless, the question is asked: Can such a marriage work and be safe? The answer: Certainly. Is it difficult for the average end-user to determine the suitability of such a marriage? No, not necessarily, but like a real-life marriage, a lot of questions need to be asked before making any commitments. Hazardous locations, as marriages involve legal questions some people prefer to ignore and, of course, others have differences of opinions. New and unfamiliar technologies are being used in hazardous locations and this is causing confusion for new-comers. Misapplication of some technologies has raised safety concerns.

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