

Alessandro MorettiPh.D.Italy
Laser-Based Additive ManufacturingPublished
Dec 16, 2025
Surface Radioactive Contamination Contamination
Radioactive contamination, it consists of low-level particle deposits arising from nuclear processes or environmental exposure, which manifest as adherent layers that emit alpha or beta radiation, distinguishing themselves from chemical contaminants through their persistent isotopic signatures and minimal visibility under standard inspection. On materials such as stainless steel or concrete, these deposits behave tenaciously, embedding into porous surfaces or forming oxide bonds on metals like copper and titanium, influenced from surface roughness that complicates uniform adhesion. Key removal challenges include avoiding secondary dispersion of particles, yet laser cleaning proves effective, as the pulsed energy vaporizes the thin layers selectively without mechanical abrasion, preserving the underlying substrate integrity.
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 |
|---|---|---|---|---|
| Radioactive particulates (resuspended) | 0.1 mg/m³ | 0.0001 mg/m³ | carcinogenic | ⚠️ 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 may embed radioactive particles into substrate surface
- •Potential for creating airborne contamination plume beyond work area
- •Secondary contamination of equipment and surfaces likely

