In Class II, Division 1 locations, ventilating pipes must be protected against what?

In Class II, Division 1 locations, the primary concern is the presence of combustible dust that can create explosive atmospheres. Given this environment, ventilating pipes must be constructed to provide a level of safety that accounts for physical damage and corrosive influences.

Protecting ventilating pipes against physical damage is vital because any breach could allow dust or other materials to accumulate, potentially leading to a dust deflagration. Furthermore, corrosive influences can degrade the material of the pipes over time, potentially leading to leaks or failures. Therefore, using robust materials and protective measures is essential to ensure the reliability and safety of the ventilation system in these hazardous locations.

Other factors such as electrical interference, excess temperature, and moisture, while important in other contexts, are secondary concerns in the specific scenario of managing the risks associated with combustible dust in Class II, Division 1 environments. Thus, focusing on physical damage and corrosive influences is paramount to maintaining safe operations in these locations.