☣️ UN 3324 • CLASS 7
Radioactive material, low specific activity (LSA-II), fissile
Placard: Radioactive. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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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Quick details
UN 3324
Class: 7
Placard type: Radioactive
ERG: Guide 165 (check current ERG)
Isolation: ERG 165: isolate 25m all directions initially; damaged packages isolate 100m; consult radiation authority; prioritize life safety over contamination concerns
Chemical & Response Details
| Also known as | LSA-II fissile materialLow specific activity radioactive material fissileFissile LSA-IIClass 7 LSA-II fissile |
| Appearance | Variable physical form depending on source material; may be contaminated equipment, ores, uranium compounds, or solid waste. Typically contained in Type A or industrial packaging with minimal external radiation. |
| Flash Point | Not applicable (radioactive material classification) |
| Boiling Point | Not applicable (varies by specific material composition) |
| Vapor Density | Not applicable (typically solid forms) |
| Water Reactivity | Generally no significant water reactivity; however some fissile materials may react with water depending on chemical form |
| Extinguishing | Water spray, foam, dry chemical, CO2 acceptable for fire suppression; radiation hazard remains |
| PPE | ⚠️ Time, distance, shielding principles apply; respiratory protection if contamination suspected; dosimetry required; follow radiation safety protocols |
| Isolation | ERG 165: isolate 25m all directions initially; damaged packages isolate 100m; consult radiation authority; prioritize life safety over contamination concerns |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- 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.
First actions (field-minded)
- 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 3324 — Radioactive material, low specific activ HAZMAT RADIO NOTE — UN 3324
Product: Radioactive material, low specific activity (LSA-II), fissile
Class 7 / Radioactive / ERG 165
PPE: Time, distance, shielding principles apply; respiratory protection if contamination suspected; dosimetry required; follow radiation safety protocols
ISOLATION: ERG 165: isolate 25m all directions initially; damaged packages isolate 100m; consult radiation authority; prioritize life safety over contamination concerns
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 3324 — Radioactive material, low specific activity (LSA-II), fissile
Class: 7 | Placard: Radioactive | ERG Guide: 165
Appearance: Variable physical form depending on source material; may be contaminated equipment, ores, uranium compounds, or solid waste. Typically contained in Type A or industrial packaging with minimal external radiation.
Water Reactivity: Generally no significant water reactivity; however some fissile materials may react with water depending on chemical form
Extinguishing: Water spray, foam, dry chemical, CO2 acceptable for fire suppression; radiation hazard remains
PPE: Time, distance, shielding principles apply; respiratory protection if contamination suspected; dosimetry required; follow radiation safety protocols
Isolation: ERG 165: isolate 25m all directions initially; damaged packages isolate 100m; consult radiation authority; prioritize life safety over contamination concerns
— 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/3324 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3324 Radioactive material, low specific activity (LSA-II), fissile Cls7 ERG165 | allfirefighter.com/hazmat/un/3324SMS / 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/3324
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FAQ
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
Time, distance, shielding principles apply; respiratory protection if contamination suspected; dosimetry required; follow radiation safety protocols
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.