Associate Safety Professional Practice Exam

In a Class 1, Division 2 location, the risk of ignitable concentrations of flammable gases or vapors is present only under abnormal conditions. The requirements for industrial trucks used in such environments focus on electrical safety and ignition sources.

Electric trucks are designed with features that prevent sparks and heat generation, making them suitable for environments where flammable gases may be present. Hydraulic trucks often operate using fluids that can be contained and do not inherently generate ignitable sources.

However, gasoline and liquefied petroleum (G/LP) fueled trucks pose a significant risk in a Class 1, Division 2 environment due to their combustible nature. The combustion process and potential fuel leaks can create ignition sources in areas where flammable gases might exist, which is why they are deemed unsuitable.

Diesel trucks are also typically not recommended for Class 1, Division 2 locations due to the same concerns of fuel handling and combustion risks.

Thus, the type of industrial truck that is particularly unsuitable for use in these environments is the G/LP truck, as it presents a higher risk of igniting flammable substances due to its fuel type.