Ozone cabinets and ozone gas-generator rooms for systems with a maximum ozone generating capacity of 1/2 pound or more shall be mechanically ventilated at a rate of not less than how many air changes per hour?

The correct answer indicates that ozone cabinets and ozone gas-generator rooms with a maximum ozone generating capacity of 1/2 pound or more must be ventilated at a rate of at least 6 air changes per hour. This requirement is important for maintaining safety in environments where ozone is generated, as ozone can be harmful to human health at elevated concentrations.

Ventilating these spaces properly helps to dilute and remove excess ozone, reducing the risk of exposure to workers and preventing the buildup of dangerous levels of this gas. The chosen ventilation rate of 6 air changes per hour strikes a balance between providing adequate air turnover to keep concentrations within safe limits and the practical aspects of maintaining effective operation of the systems involved. This rate aligns with industry standards that prioritize safety and air quality management in environments where ozone is used.

In summary, adherence to this ventilation requirement is key to ensuring safety in areas where ozone is generated, recognizing that insufficient ventilation could lead to hazardous situations.