UN 3326Radioactive material, surface contaminated objects (SCO-I or SCO-II), fissile
Class 7
Radioactive material
Summary
UN 3326 is the UN number for radioactive material, surface contaminated objects (SCO-I or SCO-II), fissile. It is classed in Class 7 (radioactive material) for transport. Emergency responders use ERG guide 165.
Emergency response
The Emergency Response Guidebook (ERG2024) guide for this number:
- Guide165Radioactive material, surface contaminated objects (SCO-I or SCO-II), fissile
From the 2024 Emergency Response Guidebook (ERG2024), published by U.S. Department of Transportation, PHMSA. Read the full guide in the ERG or on CAMEO Chemicals.
Identification
- UN number
- UN 3326
- Name
- Radioactive material, surface contaminated objects (SCO-I or SCO-II), fissile
- Hazard class
- Class 7: Radioactive material
- What the class covers
- Material containing radionuclides above set activity limits.
About Class 7
Class 7 covers radioactive material, from medical isotopes to nuclear fuel. Packages are labelled by radiation level at the surface and the type of packaging used.
Check the official sources
For emergency response, packaging and quantity limits, use these:
- CAMEO Chemicals: UN/NA 3326NOAA datasheets with the ERG response guide and isolation distances
- Emergency Response Guidebook (ERG)PHMSA's guide for first responders, free as a PDF or app
- 49 CFR 172.101 Hazardous Materials TableThe legal U.S. entry: proper shipping name, packing group, labels and special provisions