☣️ UN 0171 • CLASS 1
UN 0171 — Ammunition, illuminating
Placard: Explosive 1.3G. ERG Guide 112. 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.
Advertisement
UN 0171 Quick Details
UN 0171
Product name: Ammunition, illuminating
DOT Class: 1
Placard type: Explosive 1.3G
ERG Guide: 112 (check current ERG)
Initial isolation: ERG 112: Isolate spill or leak area immediately for at least 500 meters in all directions; evacuate area 1600 meters downwind if fire or major spill
Common Hazards of UN 0171
- Fire and burning hazard — not mass explosion.
- Intense heat and possible fragment projection.
- May deflagrate and initiate other materials.
- Smoke and toxic combustion products.
Chemical Identity & Physical Properties
| Also known as | Illuminating ammunitionFlare ammunitionLight-producing ammunitionPyrotechnic ammunition |
| Appearance | Assembled munitions containing pyrotechnic compositions designed to produce intense light. Typically metallic cartridges or shells containing magnesium-based illuminating compounds. |
| Flash Point | Not applicable (pyrotechnic material) |
| Boiling Point | Not applicable (decomposes) |
| Vapor Density | Not applicable (solid article) |
| Water Reactivity | May react with water depending on pyrotechnic composition; some illuminating compounds contain water-reactive metals |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 0171
Extinguishing Media
Do not use water directly on burning pyrotechnics; use dry sand, dry chemical, or allow to burn out in controlled manner
PPE Requirements
⚠️ Full structural firefighting gear with SCBA; face shield and protective distance due to intense light and heat; fragment protection recommended
Isolation & Evacuation
ERG 112: Isolate spill or leak area immediately for at least 500 meters in all directions; evacuate area 1600 meters downwind if fire or major spill
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 112).
First Actions for a UN 0171 Incident
- CALL 911. Then call emergency response telephone number on shipping paper.
- Isolate area; stage upwind — fire and fragment hazard.
- Request Hazmat + law enforcement.
- Control ignition sources; deny entry.
- Consult current ERG Guide 112 and follow SOP/SOG.
Advertisement
📋 Copy & Share Field Card
UN 0171 — Ammunition, illuminatingHAZMAT RADIO NOTE — UN 0171
Product: Ammunition, illuminating
Class 1 / Explosive 1.3G / ERG 112
PPE: Full structural firefighting gear with SCBA; face shield and protective distance due to intense light and heat; fragment protection recommended
ISOLATION: ERG 112: Isolate spill or leak area immediately for at least 500 meters in all directions; evacuate area 1600 meters downwind if fire or major spill
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 0171 — Ammunition, illuminating
Class: 1 | Placard: Explosive 1.3G | ERG Guide: 112
Appearance: Assembled munitions containing pyrotechnic compositions designed to produce intense light. Typically metallic cartridges or shells containing magnesium-based illuminating compounds.
Water Reactivity: May react with water depending on pyrotechnic composition; some illuminating compounds contain water-reactive metals
Extinguishing: Do not use water directly on burning pyrotechnics; use dry sand, dry chemical, or allow to burn out in controlled manner
PPE: Full structural firefighting gear with SCBA; face shield and protective distance due to intense light and heat; fragment protection recommended
Isolation: ERG 112: Isolate spill or leak area immediately for at least 500 meters in all directions; evacuate area 1600 meters downwind if fire or major spill
— Key Hazards —
• Fire and burning hazard — not mass explosion.
• Intense heat and possible fragment projection.
• May deflagrate and initiate other materials.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper.
• Isolate area; stage upwind — fire and fragment hazard.
• Request Hazmat + law enforcement.
• Control ignition sources; deny entry.
SOURCE: allfirefighter.com/hazmat/un/0171 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0171 Ammunition, illuminating Cls1 ERG112 | allfirefighter.com/hazmat/un/0171SMS / 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/0171
Related UN Numbers in Class 1
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
Advertisement
Frequently Asked Questions about UN 0171
Fire and burning hazard — not mass explosion. Intense heat and possible fragment projection. May deflagrate and initiate other materials. Smoke and toxic combustion products.
CALL 911. Then call emergency response telephone number on shipping paper. Isolate area; stage upwind — fire and fragment hazard. Request Hazmat + law enforcement.
Full structural firefighting gear with SCBA; face shield and protective distance due to intense light and heat; fragment protection recommended
Water reactivity: May react with water depending on pyrotechnic composition; some illuminating compounds contain water-reactive metals. Recommended extinguishing: Do not use water directly on burning pyrotechnics; use dry sand, dry chemical, or allow to burn out in controlled manner.
ERG Guide 112 recommendation: ERG 112: Isolate spill or leak area immediately for at least 500 meters in all directions; evacuate area 1600 meters downwind if fire or major spill
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 112 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.