Don’t blow off the dangers of compressed air
Workers can use compressed air to clean work surfaces, but only if the task is done safely. The Occupational Safety and Health Administration (OSHA) requires in 1910.242(b) that:
“Compressed air shall not be used for cleaning purposes except where reduced to less than 30 p.s.i. and then only with effective chip guarding and personal protective equipment.”
Blowing off clothing
Workers should never use compressed air to clean their clothing or bodies. An OSHA Letter of Interpretation states that employers should not allow the practice:
“The eyes and other body parts, such as the respiratory system, may be damaged as the result of inadequate personal protective equipment, lack of chip guards, and/or uncontrolled release of compressed air.”
Combustible dust hazards
Another potential hazard is dust explosions. If a sufficient quantity of combustible dust becomes airborne in the presence of an ignition source, a dust explosion can occur. The cloud could explode from an ignition source such as lights, an open flame, or power equipment.
Use extreme caution using compressed air for cleaning in environments with potential for dust build-up.
Recommendations for controlling dust include:
- Contain the dust within enclosures where ignition sources are controlled.
- Clean dust that accumulates on any surfaces or in hidden spaces.
- While cleaning, control ignition sources such as electrical, welding, and open flames.
- When working around dust, select industrial trucks and tools rated for that hazard.