☣️ UN 0194 • CLASS 1
UN 0194 — Signals, distress, ship
Placard: Explosive 1.1G. ERG Guide 112. 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 0194 Quick Details
UN 0194
Product name: Signals, distress, ship
DOT Class: 1
Placard type: Explosive 1.1G
ERG Guide: 112 (check current ERG)
Initial isolation: ERG 112: isolate 500m in all directions; if fire or cargo involved, evacuate 1600m radius; mass explosion hazard
Common Hazards of UN 0194
- Mass explosion hazard — entire load may detonate simultaneously.
- Severe blast overpressure and fragmentation.
- Sensitive to heat, shock, and friction.
- Secondary fire and debris hazard.
Chemical Identity & Physical Properties
| Also known as | Ship distress signalsMarine distress flaresPyrotechnic distress devicesMaritime emergency signalsDistress signal cartridges |
| Appearance | Pyrotechnic devices containing explosive or flammable compositions, typically in metal or plastic casings. Colors vary (red, orange, white). Solid state at room temperature. |
| Flash Point | Not applicable (explosive pyrotechnic composition) |
| Boiling Point | Not applicable (decomposes/ignites) |
| Vapor Density | Not applicable (solid pyrotechnic device) |
| Water Reactivity | May contain water-reactive metal powders; avoid water contact |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 0194
Extinguishing Media
Dry sand, dry chemical powder; do not use water or foam
PPE Requirements
⚠️ Level B minimum; full structural firefighting PPE; SCBA required; maintain safe distance due to explosion hazard
Isolation & Evacuation
ERG 112: isolate 500m in all directions; if fire or cargo involved, evacuate 1600m radius; mass explosion hazard
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 112).
First Actions for a UN 0194 Incident
- 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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📋 Copy & Share Field Card
UN 0194 — Signals, distress, shipHAZMAT RADIO NOTE — UN 0194
Product: Signals, distress, ship
Class 1 / Explosive 1.1G / ERG 112
PPE: Level B minimum; full structural firefighting PPE; SCBA required; maintain safe distance due to explosion hazard
ISOLATION: ERG 112: isolate 500m in all directions; if fire or cargo involved, evacuate 1600m radius; mass explosion hazard
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 0194 — Signals, distress, ship
Class: 1 | Placard: Explosive 1.1G | ERG Guide: 112
Appearance: Pyrotechnic devices containing explosive or flammable compositions, typically in metal or plastic casings. Colors vary (red, orange, white). Solid state at room temperature.
Water Reactivity: May contain water-reactive metal powders; avoid water contact
Extinguishing: Dry sand, dry chemical powder; do not use water or foam
PPE: Level B minimum; full structural firefighting PPE; SCBA required; maintain safe distance due to explosion hazard
Isolation: ERG 112: isolate 500m in all directions; if fire or cargo involved, evacuate 1600m radius; mass explosion hazard
— 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/0194 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0194 Signals, distress, ship Cls1 ERG112 | allfirefighter.com/hazmat/un/0194SMS / 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/0194
Related UN Numbers in Class 1
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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Frequently Asked Questions about UN 0194
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.
Level B minimum; full structural firefighting PPE; SCBA required; maintain safe distance due to explosion hazard
Water reactivity: May contain water-reactive metal powders; avoid water contact. Recommended extinguishing: Dry sand, dry chemical powder; do not use water or foam.
ERG Guide 112 recommendation: ERG 112: isolate 500m in all directions; if fire or cargo involved, evacuate 1600m radius; mass explosion hazard
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.