☣️ UN 0418 • CLASS 1
Flares, surface
Placard: Explosive 1.1G. 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 0418
Class: 1
Placard type: Explosive 1.1G
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Isolate spill or leak area immediately for at least 500 meters (1500 feet) in all directions. If fire or explosion occurs, evacuate 1600 meters (1 mile) in all directions.
Chemical & Response Details
| Also known as | Surface flaresMarine distress flaresPyrotechnic signaling flaresGround flaresEmergency signal flares |
| Appearance | Pyrotechnic devices containing oxidizers and combustible materials, typically cylindrical in shape with red or orange outer casing. May contain magnesium or other metal fuels that burn with intense light and heat. |
| Flash Point | Not applicable (explosive pyrotechnic composition) |
| Boiling Point | Not applicable (explosive pyrotechnic composition) |
| Vapor Density | Not applicable (solid pyrotechnic device) |
| Water Reactivity | May contain water-reactive metal fuels; water contact can cause violent reaction or ignition. Do not use water unless absolutely necessary for large fires. |
| Extinguishing | Dry sand, dry chemical, or CO2 for small fires; large fires may require flooding with water from distance. Foam generally not recommended. |
| PPE | ⚠️ Full structural firefighting gear with SCBA required. Maintain maximum distance due to explosion hazard. Level A recommended for post-detonation hazmat assessment. |
| Isolation | ERG 112: Isolate spill or leak area immediately for at least 500 meters (1500 feet) in all directions. If fire or explosion occurs, evacuate 1600 meters (1 mile) in all directions. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Mass explosion hazard — entire load may detonate simultaneously.
- Severe blast overpressure and fragmentation.
- Sensitive to heat, shock, and friction.
- Secondary fire and debris hazard.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper.
- Establish large isolation zone — minimum 500 meters in all directions.
- Stage upwind, uphill; limit personnel to essential responders only.
- Request Hazmat + law enforcement + additional resources immediately.
- Do not fight fire — evacuate and isolate; let burn if no life safety risk.
- Protect exposures only if safe and directed by command.
- Consult current ERG Guide 112 and follow SOP/SOG.
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UN 0418 — Flares, surface HAZMAT RADIO NOTE — UN 0418
Product: Flares, surface
Class 1 / Explosive 1.1G / ERG 112
PPE: Full structural firefighting gear with SCBA required. Maintain maximum distance due to explosion hazard. Level A recommended for post-detonation hazmat assessment.
ISOLATION: ERG 112: Isolate spill or leak area immediately for at least 500 meters (1500 feet) in all directions. If fire or explosion occurs, evacuate 1600 meters (1 mile) in all directions.
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 0418 — Flares, surface
Class: 1 | Placard: Explosive 1.1G | ERG Guide: 112
Appearance: Pyrotechnic devices containing oxidizers and combustible materials, typically cylindrical in shape with red or orange outer casing. May contain magnesium or other metal fuels that burn with intense light and heat.
Water Reactivity: May contain water-reactive metal fuels; water contact can cause violent reaction or ignition. Do not use water unless absolutely necessary for large fires.
Extinguishing: Dry sand, dry chemical, or CO2 for small fires; large fires may require flooding with water from distance. Foam generally not recommended.
PPE: Full structural firefighting gear with SCBA required. Maintain maximum distance due to explosion hazard. Level A recommended for post-detonation hazmat assessment.
Isolation: ERG 112: Isolate spill or leak area immediately for at least 500 meters (1500 feet) in all directions. If fire or explosion occurs, evacuate 1600 meters (1 mile) in all directions.
— Key Hazards —
• Mass explosion hazard — entire load may detonate simultaneously.
• Severe blast overpressure and fragmentation.
• Sensitive to heat, shock, and friction.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper.
• Establish large isolation zone — minimum 500 meters in all directions.
• Stage upwind, uphill; limit personnel to essential responders only.
• Request Hazmat + law enforcement + additional resources immediately.
SOURCE: allfirefighter.com/hazmat/un/0418 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0418 Flares, surface Cls1 ERG112 | ERG 112: Isolate spill or leak area immediately for at least 500 meters (1500 fe | allfirefighter.com/hazmat/un/0418SMS / 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/0418
Related UN numbers (same class)
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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FAQ
Mass explosion hazard — entire load may detonate simultaneously. Severe blast overpressure and fragmentation. Sensitive to heat, shock, and friction. Secondary fire and debris hazard.
CALL 911. Then call emergency response telephone number on shipping paper. Establish large isolation zone — minimum 500 meters in all directions. Stage upwind, uphill; limit personnel to essential responders only.
Full structural firefighting gear with SCBA required. Maintain maximum distance due to explosion hazard. Level A recommended for post-detonation hazmat assessment.
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.