UN 0318 — Grenades, practice
Placard: Explosive 1.3G. ERG Guide 112. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0318 identifies practice grenades—metal or composite training devices containing minimal explosive material designed to produce smoke or noise effects rather than lethal force. Though used for military and law enforcement training, these articles remain classified as Class 1.3G explosives and must be handled accordingly during transport incidents.
Hazard overview: Despite their training designation, UN 0318 grenades present a real fire and deflagration hazard, with intense heat and potential fragment projection if exposed to flame or impact. They can initiate surrounding combustible or explosive materials, and the practice label does not reduce emergency response urgency.
Response guidance: Isolate the incident area to a minimum of 500 meters in all directions and evacuate downwind to 1,600 meters if fire is involved, per ERG Guide 112. External fires may be fought with water spray, foam, dry chemical, or CO2, but personnel must remain at a safe standoff distance due to fragment projection risk.
UN 0318 Quick Details
Common Hazards of UN 0318
- 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
Practice grenades are metal or composite devices typically colored gray or blue to distinguish them from live munitions, containing only small charges sufficient for smoke or sound simulation.
| Also known as | Practice grenadesTraining grenadesInert grenadesNon-explosive grenades |
| Appearance | Metal or composite training devices designed to simulate live grenades. Typically gray or blue in color to distinguish from live munitions. Contain minimal explosive material for smoke or noise effect only. |
| 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 |
Fireground Response Guidance — UN 0318
Extinguishing Media
PPE Requirements
Responders require Level C minimum protection including full protective clothing, helmet, and face shield, with SCBA mandatory when fire or smoke is present.
Isolation & Evacuation
First Actions for a UN 0318 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 0318 — Grenades, practiceUse 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.