What should operators avoid using to clean off powder from equipment in thermal spray practices?

In thermal spray practices, operators should avoid using compressed air to clean off powder from equipment because it can create an aerosolized dust that poses inhalation hazards to the operator and surrounding personnel. The force of compressed air can easily lift and disperse fine powder particles into the air, increasing the risk of exposure and potential respiratory issues.

Using water, on the other hand, is often effective in capturing and removing particulate matter without causing it to become airborne. Chemical solvents can also be used safely if they're appropriate for the specific powders in question, and rags allow for direct removal without the risk of aerosolization. Therefore, selecting the proper cleaning method is critical to maintaining a safe working environment while ensuring the equipment remains clean and usable.