What is the maximum PSI for using compressed air for cleaning purposes?

The correct maximum PSI for using compressed air for cleaning purposes is 30 PSI. This guideline is established by OSHA to ensure safety during the use of compressed air for cleaning surfaces. At pressures exceeding 30 PSI, there is a significant risk of injury, including the potential for air to enter the body through abrasions or breaks in the skin, which can lead to serious complications.

Using 30 PSI or less is a precautionary measure to protect workers from the hazards associated with high-pressure air, including the possibility of projectiles from debris being blown off surfaces. It helps mitigate risks and promotes a safer working environment. Other options present lower pressure levels, but 30 PSI is the defined threshold recognized by OSHA for safe cleaning practices.