☣️ UN 3323 • CLASS 7
UN 3323 — Radioactive material, Type C package, non fissile or fissile excepted
Placard: Radioactive. ERG Guide 163. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ Verification required:
Broad or variable material category; verify exact product, SDS and shipping papers.
⚠️ This page is a quick-reference aid. For real incidents: stage upwind, isolate, deny entry, request Hazmat early, and consult the current ERG + SOP/SOG.
UN 3323 is a Class 7 radioactive material entry. The main response priorities are life safety, package integrity, contamination control, radiation monitoring, and early notification of the radiation authority.
Hazard overview: Undamaged packages generally present low risk, but damaged packages or released contents may create external radiation or contamination hazards. Some radioactive materials may not be detectable with basic instruments.
Response guidance: Do not touch damaged packages or spilled material. Isolate the area, keep people upwind and away, use radiation survey instruments and dosimetry when available, and follow radiation authority direction.
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UN 3323 Quick Details
UN 3323
Product name: Radioactive material, Type C package, non fissile or fissile excepted
DOT Class: 7
Placard type: Radioactive
ERG Guide: 163 (check current ERG)
Initial isolation: ERG 163: intact packages minimal isolation; damaged packages isolate 25m minimum, notify radiation authority immediately, increase distance based on radiation readings
Common Hazards of UN 3323
- Radiation presents minimal risk to transport workers, emergency response personnel and the public
- Undamaged packages are safe. Contents of damaged packages may cause higher external radiation
- Type A packages (cartons, boxes, drums, articles, etc.) identified as Type A by marking on packages or
- Type B packages, and the rarely occurring Type C packages (large and small, usually metal), contain
- The rarely occurring "Special Arrangement" shipments may be of Type A, Type B or Type C packages.
- Radioactive White-I labels indicate radiation levels outside single, isolated, undamaged packages are
- Radioactive Yellow-II and Yellow-III labeled packages have higher radiation levels. The transport index
- Some radioactive materials cannot be detected by commonly available instruments.
Chemical Identity & Physical Properties
Sealed transport package containing radioactive materials in various physical forms (solids, liquids, or gases). Package integrity designed to withstand severe accident conditions with minimal radiation risk during normal transport.
| Also known as | Type C radioactive packageRAM Type Cradioactive material excepted packagenon-fissile radioactive transport package |
| Appearance | Sealed transport package containing radioactive materials in various physical forms (solids, liquids, or gases). Package integrity designed to withstand severe accident conditions with minimal radiation risk during normal transport. |
| Flash Point | Not applicable (packaged radioactive material) |
| Boiling Point | Not applicable (packaged radioactive material) |
| Vapor Density | Not applicable (packaged radioactive material) |
| Water Reactivity | No significant reaction from intact package; damaged package contents vary by specific isotope enclosed |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3323
Extinguishing Media
Water spray for cooling if fire exposure; do not apply water directly to damaged packages without radiation authority approval
PPE Requirements
⚠️ Intact packages require minimal PPE; damaged packages require time-distance-shielding protocols, dosimetry, and radiation safety officer guidance per emergency plan
Intact packages require minimal PPE; damaged packages require time-distance-shielding protocols, dosimetry, and radiation safety officer guidance per emergency plan
Isolation & Evacuation
ERG 163: intact packages minimal isolation; damaged packages isolate 25m minimum, notify radiation authority immediately, increase distance based on radiation readings
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 163).
First Actions for a UN 3323 Incident
- Priorities for rescue, life-saving, first aid, fire control and other hazards are higher than the
- Radiation Authority must be notified of accident conditions. Radiation Authority is usually responsible for
- Stay upwind, uphill and/or upstream. • Keep unauthorized personnel away.
- Detain or isolate uninjured persons or equipment suspected to be contaminated; delay decontamination
- Isolate spill or leak area for at least 25 meters (75 feet) in all directions.
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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📋 Copy & Share Field Card
UN 3323 — Radioactive material, Type C package, noHAZMAT RADIO NOTE — UN 3323
Product: Radioactive material, Type C package, non fissile or fissile excepted
Class 7 / Radioactive / ERG 163
PPE: Intact packages require minimal PPE; damaged packages require time-distance-shielding protocols, dosimetry, and radiation safety officer guidance per emergency plan
ISOLATION: ERG 163: intact packages minimal isolation; damaged packages isolate 25m minimum, notify radiation authority immediately, increase distance based on radiation readings
ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO
Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
=== IC HAZMAT BRIEFING ===
UN 3323 — Radioactive material, Type C package, non fissile or fissile excepted
Class: 7 | Placard: Radioactive | ERG Guide: 163
Appearance: Sealed transport package containing radioactive materials in various physical forms (solids, liquids, or gases). Package integrity designed to withstand severe accident conditions with minimal radiation risk during normal transport.
Water Reactivity: No significant reaction from intact package; damaged package contents vary by specific isotope enclosed
Extinguishing: Water spray for cooling if fire exposure; do not apply water directly to damaged packages without radiation authority approval
PPE: Intact packages require minimal PPE; damaged packages require time-distance-shielding protocols, dosimetry, and radiation safety officer guidance per emergency plan
Isolation: ERG 163: intact packages minimal isolation; damaged packages isolate 25m minimum, notify radiation authority immediately, increase distance based on radiation readings
— Key Hazards —
• Radiation presents minimal risk to transport workers, emergency response personnel and the public
• Undamaged packages are safe. Contents of damaged packages may cause higher external radiation
• Type A packages (cartons, boxes, drums, articles, etc.) identified as Type A by marking on packages or
— First Actions —
• Priorities for rescue, life-saving, first aid, fire control and other hazards are higher than the
• Radiation Authority must be notified of accident conditions. Radiation Authority is usually responsible for
• Stay upwind, uphill and/or upstream. • Keep unauthorized personnel away.
• Detain or isolate uninjured persons or equipment suspected to be contaminated; delay decontamination
SOURCE: allfirefighter.com/hazmat/un/radioactive-material-type-c-un-3323 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN3323 Radioactive material, Type C package, non fissile or fissile excepted Cls7 ERG163 | allfirefighter.com/hazmat/un/radioactive-material-type-c-un-3323SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/radioactive-material-type-c-un-3323
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Frequently Asked Questions about UN 3323
Yes. It is a Class 7 radioactive material entry.
Undamaged packages normally present low external risk, but labels and radiation readings should still be checked.
Isolate the area, avoid contact, monitor radiation if equipped, and notify the radiation authority.
Use protective clothing to prevent contamination, respiratory protection if airborne contamination is possible, and dosimetry for responders.
Minimize time, maximize distance, and use shielding whenever practical.
Sources (high level): DOT/PHMSA marking & class concepts + ERG usage principles.
This page does not reproduce ERG guide text—always consult the current ERG for incident-specific protective actions.