UN 0376 — Primers, tubular
Placard: Explosive 1.4S. ERG Guide 114. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0376 designates tubular primers classified as Division 1.4S explosives, which are small ignition devices used to initiate propellant charges in firearms and artillery systems. Their 1.4S classification indicates that any explosive effect is confined to the package, with no significant blast hazard expected beyond the immediate container.
Hazard overview: UN 0376 tubular primers present a localized burning or deflagration hazard rather than a detonation risk, with effects limited to the package contents and no significant threat to adjacent cargo. However, the primary explosive compounds within these brass or copper devices are sensitive to heat, friction, and shock, and may contain moisture-sensitive formulations.
Response guidance: Isolate the area for at least 100 meters in all directions, extending to 800 meters if the cargo is on fire, and consider evacuation within that radius. Water spray, foam, dry chemical, and CO2 are all acceptable suppressants for small fires, but large fires involving these primers should not be directly engaged by personnel.
UN 0376 Quick Details
Common Hazards of UN 0376
- 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 0376 tubular primers are small metallic assemblies, typically brass or copper-colored cylindrical devices, containing primary explosive compounds designed to ignite propellant charges in weapons systems.
| Also known as | Tubular primersPercussion primersPrimer assembliesIgnition primers |
| Appearance | Small tubular metal assemblies containing primary explosive compounds, typically appearing as brass or copper-colored cylindrical devices used for igniting propellant charges. |
| 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, though may contain moisture-sensitive explosive compounds |
Fireground Response Guidance — UN 0376
Extinguishing Media
PPE Requirements
Level C minimum is required for routine handling, with full SCBA and protective clothing mandatory under fire conditions due to the toxic combustion products and thermal hazard from burning primary explosives.
Isolation & Evacuation
First Actions for a UN 0376 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 0376 — 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.