An overview of Material Groups associated with the Division concept and assigned to the specific classification of Class I for gases and vapors and Class II for combustible dusts is provided. Sources for additional information on this topic are also…
Electrical buildings in a production facility require a thorough hazardous area classification (HAC) assessment. Factors which impact assigning the proper HAC to a building which houses electrical equipment only with no batteries and no piped in process materials are presented.
The hazardous area classification of a battery room is required due to the potential presence of hydrogen gas (Group B). The key questions to be asked and answered are presented to determine the hazardous area classification of both the interior…
The hazardous area classification of process-related buildings in general is complex and can be confusing. The factors which must be considered to determine the hazardous area classification of both the interior and exterior of an Analyzer Building are presented.
The downside of assigning hazardous area classification (HAC) by only cutting and pasting diagrams and figures from recommended practices is presented. The key components of a proper HAC methodology are discussed along with the uses of the HAC documentation as…