The importance of inspections on electrical installations in hazardous locations

Electrical installations in hazardous locations (classified areas) need careful attention because non-conformities can bring considerable risks not only to the site, but also for other industries and residential areas nearby. To assure safe operation of an industrial facility it is necessary not only that all electrical and electronic equipment to be used in hazardous locations is correctly specified and purchased (known as “Ex equipment”), but also properly installed and maintained. The discussion in this paper is largely based upon International Electrotechnical Commission (IEC) standards; however, conceptually the same philosophy applies to American based standards and installations as well.