UN 0334 — Fireworks
Placard: Explosive 1.2G. ERG Guide 112. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0334 is Fireworks, a Class 1 explosive assigned to ERG Guide 112. It presents a projection and fragmentation hazard where standoff distance, isolation and specialist explosive support are the main responder priorities.
Hazard overview: UN 0334 presents a severe projection and fragmentation hazard rather than a simple fire problem. Initiation may produce blast overpressure near the source and throw fragments, burning articles or debris over a wide area. Heat, shock, impact or electrical energy can make the article more dangerous.
Response guidance: For a UN 0334 incident, responders should confirm the material using shipping papers, placards, package markings and ERG Guide 112. Establish incident command, isolate the area, deny entry, request law enforcement and EOD support, and withdraw personnel if fire involves the explosive material or containers.
Firefighter training notes: Training should emphasize recognizing Class 1 explosive placards, establishing command early, using standoff distance, denying entry and requesting bomb squad or EOD support. Common tactical errors include approaching packages for identification, moving damaged items, fighting fire too close and underestimating fragmentation distance. Use ERG 112, shipping papers and local explosive incident SOP.
Regulatory context: Fireworks is regulated as a Class 1 explosive hazardous material. Transport, storage, reporting and scene-control requirements may involve DOT, ATF, OSHA, military, state or local authorities depending on ownership and quantity. Responders should verify requirements through shipping papers, facility documents, law enforcement and current regulations.
Storage & handling: Fireworks should be stored only in approved explosive magazines or authorized storage areas, separated from ignition sources, incompatible materials and unauthorized access. Packages should be protected from heat, impact, friction, moisture where relevant and physical damage according to product documentation and applicable explosive storage regulations.
UN 0334 Quick Details
Common Hazards of UN 0334
- Projection and fragmentation hazard; fireworks may launch, burst or scatter burning fragments if initiated.
- Blast overpressure may be severe near the involved articles.
- Pyrotechnic compositions may be sensitive to heat, impact, friction or ignition sources.
- Fire involvement can rapidly ignite multiple articles and create unpredictable projectile paths.
- Smoke may contain irritating or toxic combustion products from oxidizers, fuels, colorants and packaging.
- Nearby fireworks, pyrotechnics or explosives may increase the incident hazard.
Chemical Identity & Physical Properties
Solid articles containing pyrotechnic compositions of various colors; typically cardboard tubes, shells, or devices filled with explosive powders, oxidizers, and metallic fuels; may produce colored flames, sparks, smoke, or noise upon ignition.
| Also known as | pyrotechnicspyrotechnic articlesexplosive fireworksdisplay fireworksconsumer fireworksfirecrackers |
| Appearance | Solid articles containing pyrotechnic compositions of various colors; typically cardboard tubes, shells, or devices filled with explosive powders, oxidizers, and metallic fuels; may produce colored flames, sparks, smoke, or noise upon ignition. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (explosive solid) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Generally stable in water, but some pyrotechnic compositions may react with water producing flammable gases or heat; avoid water application on burning fireworks as it may spread burning materials. |
Fireground Response Guidance — UN 0334
Extinguishing Media
PPE Requirements
For UN 0334, distance, cover and evacuation are more important than close-range PPE. Structural firefighting gear and SCBA may be used only for remote exposure protection or support roles; direct approach or handling should be limited to qualified EOD or explosive specialists under incident command.
Isolation & Evacuation
First Actions for a UN 0334 Incident
- CALL 911. Then call the emergency response telephone number on the shipping paper, if available.
- Keep unauthorized personnel away and deny entry to the hazard area.
- Stage responders upwind, uphill and outside the recommended isolation distance.
- Request law enforcement, bomb squad or EOD, hazmat and additional command resources immediately.
- Do not handle, move or disturb explosive articles unless directed by qualified explosive ordnance personnel.
- Do not approach fire-involved articles because projection and fragmentation may occur without warning.
- Protect exposures only from a safe, remote position if directed by incident command and local SOP.
- Use ERG Guide 112, shipping papers and incident command to set isolation and evacuation distances.
📋 Copy & Share Field Card
UN 0334 — FireworksUse 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.