UN 0384 — Components, explosive train, n.o.s.
Placard: Explosive 1.4B. ERG Guide 114. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0384 covers components of explosive trains, including detonators, igniters, and initiating devices housed in metal or plastic assemblies containing small quantities of primary or secondary explosives. These Class 1.4B devices present a limited blast and fire hazard, with effects generally confined to the immediate area of the incident.
Hazard overview: UN 0384 components may undergo localized burning or deflagration, producing minor blast overpressure and heat primarily affecting the immediate vicinity. The restricted explosive content limits catastrophic detonation risk, but initiating components can trigger secondary fires if surrounding materials are combustible.
Response guidance: Isolate a minimum of 200 meters in all directions per ERG Guide 114; if cargo is involved in fire, expand the evacuation radius to 500 meters. Apply water spray, dry chemical, or CO2 from a safe standoff distance and avoid direct foam application on any burning explosive components.
UN 0384 Quick Details
Common Hazards of UN 0384
- Minor blast or fire hazard — limited effect.
- Localized burning or deflagration possible.
- Smoke and heat from burning.
- Low mass explosion risk under normal conditions.
Chemical Identity & Physical Properties
UN 0384 items consist of varied solid assemblies in metal or plastic housings containing small quantities of primary or secondary explosives, including detonators and igniters.
| Also known as | Explosive train componentsDetonator assembliesInitiating device componentsBlasting accessoriesPyrotechnic train elements |
| Appearance | Varied assemblies containing small quantities of explosive materials, typically solid devices ranging from metal or plastic housings containing primary or secondary explosives. May include detonators, igniters, or similar initiating components. |
| Flash Point | Not applicable (explosive material) |
| Boiling Point | Not applicable (explosive solid components) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Generally no reaction with water, but may contain moisture-sensitive components |
Fireground Response Guidance — UN 0384
Extinguishing Media
PPE Requirements
Wear Level C protection as a minimum for handling operations; upgrade to Level B with SCBA during fire response and use blast-resistant gear whenever detonation risk is present.
Isolation & Evacuation
First Actions for a UN 0384 Incident
- CALL 911. Notify law enforcement.
- Isolate area; keep unauthorized personnel away.
- Stage upwind; eliminate ignition sources.
- Request Hazmat + law enforcement.
- Consult current ERG Guide 114 and follow SOP/SOG.
📋 Copy & Share Field Card
UN 0384 — Components, explosive train, n.o.s.Use 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.