Compressed air is often misjudged and not recognized as a hazard because people think of air as harmless.

• Air forced into body tissues through the skin can cause an air embolism (air bubbles in the bloodstream), which can be fatal if it reaches the heart, lungs or brain.

• Inflation injuries of the intestine can be caused by air being directed at private body areas. A worker in the U.K. died of injuries sustained through horseplay with a compressed air hose. The act of horseplay can be deadly.

• Air blown into the mouth at only 5 psi can rupture the esophagus or the lungs.

• Eye and ear injuries can occur from a blast of air or flying particles. These types of eye and ear injuries can cause partial or total loss of sight and hearing.

• The sound from a compressed air hose can reach 120-130 dB, which is well above OSHA’s 85 dBA action level and can contribute to overexposure depending on duration.

• Forty psi can blow out an eardrum from 4 inches away and possibly cause brain damage.

• As little as 12 psi can blow an eye out of its socket.

• Flying particles can cause cuts and bruises to any part of the body.

Remember:

• Hoses and lines should be rated to meet the maximum operating pressure of the equipment.

• Never point compressed air at yourself or another person.

• If you must clean with compressed air, do not use air that is set above 30 psi. You must also have effective chip guarding and proper PPE (OSHA standard 29 CFR 1910.242(b)). Never use compressed air to clean clothing or hair. 

• Always wear proper personal protective equipment:

• Safety glasses with side shields and a face shield if needed

• Hearing protection

• Respiratory protection, depending on the material being worked with

• Normal work clothing is not protection against compressed air.

Action Item:

Go through the manufacturer’s safety recommendations in the air compressor’s safety manual and read and understand the maintenance requirements for the compressor.

Resources and References:

OSHA Standards and Regulations
https://www.osha.gov/laws-regs