What is the required pressure limit for compressed air used for cleaning?

The correct answer reflects safety standards established for using compressed air in cleaning applications. Compressed air can be a useful tool for cleaning equipment and surfaces, but if the pressure is too high, it poses serious hazards, including the risk of air entering the body through skin punctures or even inhalation of aerosols created by the high-pressure air.

Setting a pressure limit of less than 30 psi aligns with safety guidelines that minimize these risks while still allowing for effective cleaning. At pressures higher than 30 psi, the potential for injury increases significantly, particularly from debris being propelled at high speeds. This standard helps ensure a safer work environment while maintaining the efficiency of cleaning procedures.

To reinforce the importance of the correct choice, higher pressures could lead to dangerous situations, which is why regulatory bodies emphasize maintaining lower pressure limits to enhance safety during these operations.