UN 0319 — Primers, tubular
Placard: Explosive 1.3G. ERG Guide 112. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0319 identifies Primers, tubular — small impact-sensitive explosive devices housed in metallic cylindrical casings, commonly used in ammunition and ordnance applications. These Class 1.3G articles are capable of deflagration and can initiate surrounding explosive materials when involved in fire or mechanical shock.
Hazard overview: Primers, tubular present a serious fire and burning hazard with potential for intense heat release and fragment projection from their metallic casings upon initiation. Unlike mass-detonating explosives, they deflagrate rather than detonate, but can propagate ignition to adjacent explosive materials and sustain hazardous burning under confined conditions.
Response guidance: Establish an isolation perimeter of 500 meters in all directions for UN 0319 incidents, expanding to a 1,600-meter evacuation radius if fire or explosion is involved. Approach only from upwind and uphill positions; do not apply water or foam to burning primers — use dry chemical, sand, or earth to smother the fire if safe to do so.
UN 0319 Quick Details
Common Hazards of UN 0319
- 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
UN 0319 articles are small cylindrical devices, typically brass or copper colored, with metallic casings filled with a primary impact-sensitive explosive composition.
| Also known as | Tubular primersPercussion primersIgnition primersSmall arms primers |
| Appearance | Small metallic cylindrical devices containing impact-sensitive explosive composition, typically brass or copper colored casings filled with primary explosive mixture. |
| Flash Point | Not applicable (explosive article) |
| Boiling Point | Not applicable (explosive article) |
| Vapor Density | Not applicable (solid article) |
| Water Reactivity | No significant reaction with water, but keep dry to prevent degradation of explosive composition |
Fireground Response Guidance — UN 0319
Extinguishing Media
PPE Requirements
Responders must wear Level B minimum protection including blast-resistant clothing and full structural firefighting gear with SCBA, maintaining maximum safe standoff distance at all times.
Isolation & Evacuation
First Actions for a UN 0319 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.
📋 Copy & Share Field Card
UN 0319 — Primers, tubularUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.