UN 0361 — Detonator assemblies, non-electric, for blasting
Placard: Explosive 1.4B. ERG Guide 114. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0361, Detonator assemblies non-electric for blasting, are Class 1.4B explosive devices consisting of assembled initiator and delay elements enclosed in metal or plastic shells, often fitted with shock tube or safety fuse attachments. Unlike the 1.1B classification of UN 0360, the 1.4B designation indicates that any fire or detonation effect is expected to remain localized with no mass explosion risk to the surrounding load.
Hazard overview: UN 0361 presents a minor but real blast and fire hazard, with localized burning or deflagration possible if devices are exposed to fire or significant mechanical shock. The limited hazard classification reflects the design containment of the explosive effect, but individual device detonation can still cause injury and ignite secondary fires.
Response guidance: Per ERG Guide 114, responders should isolate the area to 500 meters in all directions initially, increasing to 800 meters if fire or explosion occurs, and deny entry to the zone. Water spray is acceptable for fire control and cooling of surrounding material, but water jets should not be directed onto the devices themselves, and responders must maintain a safe standoff distance at all times.
UN 0361 Quick Details
Common Hazards of UN 0361
- 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 0361 assemblies are solid-state devices at room temperature, enclosed in metal or plastic shells and incorporating explosive initiators and delay elements, with optional shock tube or safety fuse attachments depending on the blasting application.
| Also known as | Non-electric blasting detonatorsPyrotechnic detonatorsShock tube detonatorsNonel detonatorsSafety fuse detonators |
| Appearance | Assembled units containing explosive initiators and delay elements, typically enclosed in metal or plastic shells. May include shock tube or safety fuse attachments. Solid state devices at room temperature. |
| Flash Point | Not applicable (explosive device) |
| Boiling Point | Not applicable (explosive device) |
| Vapor Density | Not applicable (solid device) |
| Water Reactivity | No significant reaction with water; keep dry to maintain reliability |
Fireground Response Guidance — UN 0361
Extinguishing Media
PPE Requirements
Level C protection with SCBA is the minimum requirement, upgrading to Level B with full structural firefighting gear if fire is present, while maintaining a safe distance from any potential blast zone at all times.
Isolation & Evacuation
First Actions for a UN 0361 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 0361 — Detonator assemblies, non-electric, forUse 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.