

Yi-Chun LinPh.D.Taiwan
Laser Materials ProcessingPublished
Dec 16, 2025
Depleted Uranium Oxide Contamination
Uranium oxide forms on surfaces after exposure to nuclear materials in manufacturing and military settings. Unlike rust or dust, it exhibits dense layering and radioactivity so distinguishes itself clearly. On steel, bond holds tightly, while on concrete, penetration deepens into structure, and challenges arise from hardness during removal. Laser cleaning succeeds because ablation vaporizes contamination precisely without residue spread.
Safety Information
Critical safety data for laser removal operations
Fire/Explosion Risk
low
Toxic Gas Risk
low
Visibility Hazard
moderate
Required Personal Protective Equipment
Respiratory Protection
PAPR
Eye Protection
goggles
Skin Protection
full_suit
Hazardous Fumes Generated
| Compound | Concentration | Exposure Limit | Hazard Class | Status |
|---|---|---|---|---|
| Uranium Oxide (as U) | 0.5 mg/m³ | 0.2 mg/m³ | toxic | ⚠️ Exceeds Limit |
| Uranium Dioxide (UO₂) | 0.3 mg/m³ | 0.2 mg/m³ | toxic | ⚠️ Exceeds Limit |
| Uranium Trioxide (UO₃) | 0.1 mg/m³ | 0.05 mg/m³ | toxic | ⚠️ Exceeds Limit |
Ventilation Requirements
Air Changes Per Hour
12
Exhaust Velocity
0.5 m/s
Filtration Type
HEPA
Particulate Generation
Respirable Fraction
80%
Size Range
0.1 - 10 μm
Substrate Compatibility Warnings
- •Laser parameters must be carefully controlled to minimize aerosolization
- •Surface may produce refractory particles that persist in work area
- •Contaminated runoff and debris require radioactive waste protocols

