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Classifying Hazardous Locations Hazardous Locations <br />• . • • 11 R MIT;• <br />Any activity (such as smoking or drilling) that can cause an explosion must be done well <br />outside the vapor area. <br />Figure 3-1 is based on NFPA 30A and NFPA 70. <br />Figure 3-1: Hazardous Locations Diagram <br />Fuel is present Fuel Containing <br />(Flammable Liquid) Components <br />Class t Division 1 <br />(Hazardous Location) <br />Vapor Areas — <br />INClass 1 Division 2 <br />(Hazardous Location) <br />{�-- 20' <br />18" <br />Vertical Vapour Barrier Class 1 Division 2 inside <br />side columns (above 48" from the base of the <br />unit) <br />Concrete Base <br />Notes., 1) Not applicable to DEF -only dispensers. <br />2) DEF is not flammable and does not generate explosive vapors. Consult Local Regulatory Agencies for any <br />requirements. For example, units dispensing DEF and Diesel must follow the flammable fuel regulatory requirements. <br />MDE-3985UEncore®Installation Manual - September 2011 Page 11 <br />