What 29 CFR 1910.242 Means for Air Nozzles in Manufacturing and Construction

Frequently Asked Questions

What does 29 CFR 1910.242 require for compressed air used for cleaning?

For general industry, compressed air used for cleaning must be reduced to less than 30 psi and only used with effective chip guarding and appropriate PPE. The rule is focused on preventing exposure to dangerous air pressure and flying debris.

Can workers use compressed air to clean their clothing or blow off their skin?

The post identifies using compressed air on clothing or skin as a misuse and a key audit item. It also notes concerns about skin damage, embedded particles, and possible injection or internal injury when air is directed at the body.

What hazards do air nozzles and blow-off guns create?

Common hazards include eye and face injuries from flying debris, skin damage, hearing exposure, and secondary injuries like slips or loss of control. The post also warns that compressed air can redistribute dust and create poor housekeeping exposure instead of removing the hazard.

What should a compliant air nozzle setup include?

The post says to use an engineered pressure-limiting nozzle, chip guarding or barrier protection where particles may fly, and PPE that fits the material being cleaned. It also calls for good hose and fitting condition, controlled trigger and grip design, and clear manufacturer information on intended use and pressure performance.

How should EHS managers audit compressed air nozzle use in manufacturing and construction?

Start by identifying where compressed air is being used for cleaning, whether the nozzles are approved, and whether outlet pressure has been verified rather than assumed. Then observe actual cleaning behavior in the field, inspect nozzle types and condition, review regulator practices, and confirm supervisors understand the rule.