As a laser cleaning operator, how can I protect myself from NOx exposure while working on metal surfaces?

Question

Accepted Answer

Prioritize engineering controls like local exhaust ventilation or fume extractors positioned near the laser head to capture NOx gases at the source, ensuring airflow rates of at least 100-200 linear feet per minute to dilute concentrations below safe levels. Wear a full-facepiece respirator with cartridges rated for acid gases (e.g., NIOSH-approved for NOx) if ventilation is insufficient, and always monitor air quality using a portable NOx detector calibrated for NO and NO2. Adhere to OSHA exposure limits of 25 ppm for NO and 5 ppm for NO2 over an 8-hour shift to prevent respiratory irritation or long-term lung damage.

Nitrogen Oxides Compound

Chemical Properties

Chemical Identity

Health Effects

Source Contaminants

Rust / Iron Oxide Formation

Algae and Lichen Growth

Biological Blood Residue

Electroplating Solution Residue

Fertilizer Salt Deposits

Insect Impact Residue

Pesticide Chemical Residue

Pharmaceutical Drug Residue

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