What potential hazard may arise from excessively thermal fogging a confined space?

Excessive thermal fogging in a confined space can create a serious risk of explosion. This method involves the use of a fogging apparatus that heats a chemical solution to create a mist that can penetrate odors effectively. However, the process generates flammable vapors that can accumulate in an enclosed area, especially if proper ventilation is not maintained or if the concentration of chemicals exceeds safe limits.

In a confined space, if these vapors reach their lower explosive limit (LEL), any ignition source could trigger an explosion. Therefore, it’s critical to monitor the environment during thermal fogging to ensure the accumulation of hazardous vapors is kept at bay, prioritizing safety by utilizing proper ventilation and adhering to the guidelines for chemical application.

While fire is a concern, the more specific risk related to excessive thermal fogging is the potential for an explosion due to the accumulation of flammable vapors in a confined environment.