Which factor is NOT considered in hazardous location classification?

In the process of classifying hazardous locations, several factors are taken into account to ensure the safety and integrity of both the environment and the personnel working within those areas. The presence of different types of materials plays a crucial role, as specific substances can ignite or explode under certain conditions. Furthermore, environmental conditions, such as temperature, humidity, and ventilation, are pivotal in determining how hazardous a location may be.

Duration of exposure to hazardous substances also influences risk assessments, as longer exposure times can increase the potential for harmful incidents. However, worker age and experience are not included in the classification criteria for hazardous locations because these factors pertain more to human factors and training rather than the intrinsic hazards presented by the environment itself. Therefore, assessing hazardous location classifications focuses on the environmental and material characteristics rather than the personal attributes of the workers present.