☣️ UN 3329 • CLASS 7
UN 3329 — Radioactive material, Type B(M) package, fissile
Placard: Radioactive. ERG Guide 165. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ 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.
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UN 3329 Quick Details
UN 3329
Product name: Radioactive material, Type B(M) package, fissile
DOT Class: 7
Placard type: Radioactive
ERG Guide: 165 (check current ERG)
Initial isolation: ERG 165: isolate 25m all directions initially; damaged packages require 100m isolation; consult radiation authority immediately; evacuate if package integrity compromised or criticality concern exists
Common Hazards of UN 3329
- Radiation presents minimal risk to transport workers, emergency response personnel and the public during
- Undamaged packages are safe. Contents of damaged packages may cause higher external radiation exposure,
- Type AF or IF packages, identified by package markings, do not contain life-threatening amounts of material.
- Type B(U)F, B(M)F and CF packages (identified by markings on packages or shipping papers) contain potentially
- The rarely occurring "Special Arrangement" shipments may be of Type AF, BF or CF packages. Package type
- The transport index (TI) shown on labels or a shipping paper might not indicate the radiation level at one meter
- Some radioactive materials cannot be detected by commonly available instruments.
- Water from cargo fire control is not expected to cause pollution.
Chemical Identity & Physical Properties
| Also known as | Type B(M) fissile packageRadioactive material fissile Type BMRAM Type B(M) fissileFissile radioactive package Type B(M) |
| Appearance | Sealed transport package containing fissile radioactive material with robust containment. Package is specifically engineered to withstand severe accident conditions while maintaining shielding and containment integrity. |
| Flash Point | Not applicable (packaged radioactive material) |
| Boiling Point | Not applicable (packaged radioactive material) |
| Vapor Density | Not applicable (packaged radioactive material) |
| Water Reactivity | Package designed to prevent water contact with contents; damaged packages may allow water ingress depending on specific fissile material enclosed |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3329
Extinguishing Media
Water spray for cooling damaged packages only; do not breach containment
PPE Requirements
⚠️ Radiation detection instruments mandatory; Level C with full-face respirator minimum for damaged packages; maintain distance and minimize time; radiation dosimetry required for all personnel
Isolation & Evacuation
ERG 165: isolate 25m all directions initially; damaged packages require 100m isolation; consult radiation authority immediately; evacuate if package integrity compromised or criticality concern exists
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 165).
First Actions for a UN 3329 Incident
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not
- Priorities for rescue, life-saving, first aid, fire control and other hazards are higher than the priority for
- 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 and
- 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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UN 3329 — Radioactive material, Type B(M) package,HAZMAT RADIO NOTE — UN 3329
Product: Radioactive material, Type B(M) package, fissile
Class 7 / Radioactive / ERG 165
PPE: Radiation detection instruments mandatory; Level C with full-face respirator minimum for damaged packages; maintain distance and minimize time; radiation dosimetry required for all personnel
ISOLATION: ERG 165: isolate 25m all directions initially; damaged packages require 100m isolation; consult radiation authority immediately; evacuate if package integrity compromised or criticality concern exists
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 3329 — Radioactive material, Type B(M) package, fissile
Class: 7 | Placard: Radioactive | ERG Guide: 165
Appearance: Sealed transport package containing fissile radioactive material with robust containment. Package is specifically engineered to withstand severe accident conditions while maintaining shielding and containment integrity.
Water Reactivity: Package designed to prevent water contact with contents; damaged packages may allow water ingress depending on specific fissile material enclosed
Extinguishing: Water spray for cooling damaged packages only; do not breach containment
PPE: Radiation detection instruments mandatory; Level C with full-face respirator minimum for damaged packages; maintain distance and minimize time; radiation dosimetry required for all personnel
Isolation: ERG 165: isolate 25m all directions initially; damaged packages require 100m isolation; consult radiation authority immediately; evacuate if package integrity compromised or criticality concern exists
— Key Hazards —
• Radiation presents minimal risk to transport workers, emergency response personnel and the public during
• Undamaged packages are safe. Contents of damaged packages may cause higher external radiation exposure,
• Type AF or IF packages, identified by package markings, do not contain life-threatening amounts of material.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not
• Priorities for rescue, life-saving, first aid, fire control and other hazards are higher than the priority for
• Radiation Authority must be notified of accident conditions. Radiation Authority is usually responsible for
• Stay upwind, uphill and/or upstream.
SOURCE: allfirefighter.com/hazmat/un/3329 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3329 Radioactive material, Type B(M) package, fissile Cls7 ERG165 | allfirefighter.com/hazmat/un/3329SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS. Includes link to full page.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/3329
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Frequently Asked Questions about UN 3329
Radiation presents minimal risk to transport workers, emergency response personnel and the public during Undamaged packages are safe. Contents of damaged packages may cause higher external radiation exposure, Type AF or IF packages, identified by package markings, do not contain life-threatening amounts of material. Type B(U)F, B(M)F and CF packages (identified by markings on packages or shipping papers) contain potentially The rarely occurring "Special Arrangement" shipments may be of Type AF, BF or CF packages. Package type The transport index (TI) shown on labels or a shipping paper might not indicate the radiation level at one meter Some radioactive materials cannot be detected by commonly available instruments. Water from cargo fire control is not expected to cause pollution.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not Priorities for rescue, life-saving, first aid, fire control and other hazards are higher than the priority for Radiation Authority must be notified of accident conditions. Radiation Authority is usually responsible for
Radiation detection instruments mandatory; Level C with full-face respirator minimum for damaged packages; maintain distance and minimize time; radiation dosimetry required for all personnel
Water reactivity: Package designed to prevent water contact with contents; damaged packages may allow water ingress depending on specific fissile material enclosed. Recommended extinguishing: Water spray for cooling damaged packages only; do not breach containment.
ERG Guide 165 recommendation: ERG 165: isolate 25m all directions initially; damaged packages require 100m isolation; consult radiation authority immediately; evacuate if package integrity compromised or criticality concern exists
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 165 and your department SOP/SOG for incident-specific protective actions.
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.