Compressed Air Safety

Compressed air is used in a multitude of applications in industry — pneumatic tools and equipment, pumps, valves, tires, robotic arms, conveyors, packaging machines, some welding operations, metal cutting, surface preparation, breathing air, natural gas extraction, ventilation systems, pipeline inspection, aeration, agitation, and more. You may think because “it’s just air”, that compressed air is harmless. It’s actually the opposite.

⚡ TL;DR: Compressed air at 12 psi can dislodge an eye from its socket; 5 psi can rupture your esophagus or lungs. OSHA limits compressed air to 30 psi for general use. Never use compressed air to clean clothes, skin, or hair. Proper nozzle design and lockout/tagout procedures are essential for compliance.

Why Do Safety Policies Tell You to Never Use Compressed Air to Blow Down Your Clothes?

Never use air to clean your clothes, never blow compressed air on yourself, and never blow compressed air at someone else. When compressed air hits your skin, the air can be forced into your tissues through the skin and cause an air bubble in your blood stream. This air bubble can be fatal if it reaches the very small blood vessels of your heart, lungs or brain. Your clothes are not strong enough to protect you. Air blown in your mouth at only 5 psi can rupture your esophagus or lungs.

⚠️ What’s at stake: OSHA citations for compressed air hazards typically result in fines of $5,000–$15,000 per violation. Serious injuries from compressed air accidents can trigger criminal liability, workers’ compensation claims exceeding $100,000, and wrongful death litigation if fatalities occur.

PPE

Always wear eye protection when using compressed air. Besides the fact that it only takes 12 psi to blow your eye out of its socket, flying particles can damage your eyes. Wear safety glasses with side shields or a face shield. Air compressors, impact tools and other compressed air equipment can be loud and damaging to your hearing. Wear ear protection while using. Gloves and safety boots are preferred.

Hoses

Make sure your hoses are rated to meet the maximum operating pressure of the equipment. Keep hoses off the floor/ground where they can trip someone or become damaged by moving equipment, doors or dropped items. If they’re on a self-retracting reel, keep them reeled when not in use. If you don’t have a reel, keep them coiled (without kinks) and hang it over a broad support—not a hook or nail. Keep sharp objects away at a distance so they won’t rub on the hose. Don’t wedge hoses in corners or hang them around machines. If a hose gets stuck, don’t pull/yank on it until it becomes free. Go to the point where it’s stuck and guide it. Inspect hoses on a regular basis for weak points, cuts, frayed covers and other damage. Replace when needed. Weak points of the hose may swell up like a balloon and burst or thrash about dangerously. Before using, make sure connections are properly sealed and there isn’t damage to fittings or the hose itself. If a hose bursts and starts to thrash, get out of the way of it and shut off the air supply at its source.

Other

OSHA’s limit for compressed gasses is 30 psi. Nozzles with relief holes on the tip are often used as a way to comply with the standard and to prevent over pressure if the nozzle were to become dead ended. Never remove the tip off the nozzle or use damaged nozzles where the tip isn’t maintaining the proper opening. This is one of the main inspection items we find regarding compressed air in audits. Never used a compressed-air tool or piece of equipment without the proper training, knowledge of the limitations of the equipment, and where the air supply shutoff is located. Air shutoffs should be located as near as possible to the point of operation. Besides the hoses, inspect other components of your compressed air systems on a regular basis. This may include air receiver tanks, distribution lines, pressure regulation devices and compressors. Only use qualified personnel to conduct maintenance on compressed air devices. When conducting maintenance, ensure lockout/tagout procedures are used. Unless a pneumatic tool has a quick disconnect plug, before it’s disconnected turn off the air supply and bleed the tool of air.

Does your facility have proper nozzle configuration and air shutoff locations? Are workers trained on compressed air hazards? iSi Environmental can audit your compressed air systems and provide OSHA-compliant safety training. Schedule a safety audit →

💰 The cost of non-compliance: OSHA penalties for serious compressed air violations range from $5,000–$15,000 per citation. Compressed air injuries requiring hospitalization average $20,000–$250,000 in medical and workers’ comp costs, not including lost productivity and potential punitive damages.

Frequently Asked Questions

Q: What are the health hazards of using compressed air to clean clothes or skin?

When compressed air hits skin, it can force air into tissues and cause air bubbles (air emboli) in the bloodstream. These bubbles can cause stroke, heart attack, or death if they reach critical blood vessels in the heart, lungs, or brain. Air at pressures as low as 5 psi can rupture the esophagus or lungs if blown into the mouth. Clothing provides no protection against these injuries. OSHA and occupational health organizations strictly prohibit using compressed air for personal cleaning or body contact. iSi Environmental trains workers that compressed air is a serious occupational hazard, not a cleaning tool for people.

Q: What is OSHA’s pressure limit for compressed air devices and nozzles?

OSHA limits compressed air to 30 psi for cleaning and general use. Nozzles with relief holes on the tip help comply with this standard and prevent overpressure if the nozzle becomes blocked or “dead-ended.” The relief holes allow excess pressure to release safely. Removing the relief tip or using damaged nozzles that don’t maintain proper openings violates OSHA requirements and increases hazard risk. iSi Environmental helps facilities audit nozzles and compressed air equipment for OSHA compliance.

Q: What personal protective equipment is required when working with compressed air?

Eye protection with side shields or a face shield is mandatory because compressed air at 12 psi can dislodge an eye from its socket, and flying particles can cause eye injuries. Hearing protection is required because compressors and pneumatic tools generate damaging noise levels. Gloves and safety boots are strongly recommended. All PPE must be properly fitted and workers must be trained on correct use. iSi Environmental ensures facilities have proper PPE programs for compressed air operations.

Q: What lockout/tagout procedures are required for compressed air system maintenance?

Before conducting maintenance on compressed air systems, air supply must be shut off and pressure must be bled from the equipment and hoses. Lockout/tagout procedures must be applied to air shutoff points to prevent accidental restart. Only qualified personnel should perform maintenance on air receiver tanks, distribution lines, pressure regulation devices, and compressors. Air shutoffs should be located as close as possible to the point of operation. iSi Environmental helps facilities establish OSHA-compliant lockout/tagout procedures for compressed air systems.

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Every satisfactory compressed air safety program starts with knowing where your hazard gaps are. iSi Environmental helps industrial and manufacturing facilities in Kansas, Oklahoma, and Texas audit compressed air systems, train workers, and maintain OSHA compliance. Schedule a compressed air safety review →

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