☣️ UN 0105 • CLASS 1
UN 0105 — Fuse, safety
Placard: Explosive 1.4S. ERG Guide 114. 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 0105 Quick Details
UN 0105
Product name: Fuse, safety
DOT Class: 1
Placard type: Explosive 1.4S
ERG Guide: 114 (check current ERG)
Initial isolation: ERG 114: isolate 500m in all directions for large fires; evacuate area and fight fire from maximum distance; may explode under fire conditions
Common Hazards of UN 0105
- Fire hazard if burning
- May initiate connected explosive devices
- Burning rate varies by product
Chemical Identity & Physical Properties
| Also known as | Safety fuseBlasting fuseTime fuseIgniter cordPowder core fuse |
| Appearance | Textile-wrapped cord containing black powder or similar deflagrating composition, typically gray, black, or green in color. Flexible, rope-like appearance with distinctive fabric covering. |
| Flash Point | Not applicable (pyrotechnic device) |
| Boiling Point | Not applicable (pyrotechnic device) |
| Vapor Density | Not applicable (solid article) |
| Water Reactivity | Minimal reaction with water; wet fuse may fail to function but does not react violently |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 0105
Extinguishing Media
Water spray, fog, or regular foam acceptable; flooding with water preferred for fire control
PPE Requirements
⚠️ Level D minimum for handling intact fuses; Level C with SCBA if fire or decomposition occurring; explosive-rated facilities and equipment required
Isolation & Evacuation
ERG 114: isolate 500m in all directions for large fires; evacuate area and fight fire from maximum distance; may explode under fire conditions
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 114).
First Actions for a UN 0105 Incident
- CALL 911. Notify law enforcement.
- Isolate area; no ignition sources
- Stage upwind; deny entry
- Request Hazmat + law enforcement
- Consult current ERG Guide 114 and SOP/SOG
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UN 0105 — Fuse, safetyHAZMAT RADIO NOTE — UN 0105
Product: Fuse, safety
Class 1 / Explosive 1.4S / ERG 114
PPE: Level D minimum for handling intact fuses; Level C with SCBA if fire or decomposition occurring; explosive-rated facilities and equipment required
ISOLATION: ERG 114: isolate 500m in all directions for large fires; evacuate area and fight fire from maximum distance; may explode under fire conditions
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 0105 — Fuse, safety
Class: 1 | Placard: Explosive 1.4S | ERG Guide: 114
Appearance: Textile-wrapped cord containing black powder or similar deflagrating composition, typically gray, black, or green in color. Flexible, rope-like appearance with distinctive fabric covering.
Water Reactivity: Minimal reaction with water; wet fuse may fail to function but does not react violently
Extinguishing: Water spray, fog, or regular foam acceptable; flooding with water preferred for fire control
PPE: Level D minimum for handling intact fuses; Level C with SCBA if fire or decomposition occurring; explosive-rated facilities and equipment required
Isolation: ERG 114: isolate 500m in all directions for large fires; evacuate area and fight fire from maximum distance; may explode under fire conditions
— Key Hazards —
• Fire hazard if burning
• May initiate connected explosive devices
• Burning rate varies by product
— First Actions —
• CALL 911. Notify law enforcement.
• Isolate area; no ignition sources
• Stage upwind; deny entry
• Request Hazmat + law enforcement
SOURCE: allfirefighter.com/hazmat/un/0105 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0105 Fuse, safety Cls1 ERG114 | ERG 114: isolate 500m in all directions for large fires; evacuate area and fight | allfirefighter.com/hazmat/un/0105SMS / 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/0105
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 0105
Fire hazard if burning May initiate connected explosive devices Burning rate varies by product
CALL 911. Notify law enforcement. Isolate area; no ignition sources Stage upwind; deny entry
Level D minimum for handling intact fuses; Level C with SCBA if fire or decomposition occurring; explosive-rated facilities and equipment required
Water reactivity: Minimal reaction with water; wet fuse may fail to function but does not react violently. Recommended extinguishing: Water spray, fog, or regular foam acceptable; flooding with water preferred for fire control.
ERG Guide 114 recommendation: ERG 114: isolate 500m in all directions for large fires; evacuate area and fight fire from maximum distance; may explode under fire conditions
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 114 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.