UN 0372 — Grenades, practice
Placard: Explosive 1.4G. ERG Guide 114. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0372 At a Glance
UN 0372 (Grenades, practice) is listed as DOT Class 1 Explosive 1.4G and is assigned to ERG Guide 114. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
UN 0372 is the transport designation for Grenades, practice, a Class 1 explosive article assigned to Division 1.4 and Compatibility Group G. The classification represents a limited explosive hazard under the applicable transport conditions, but fire, severe heat, damage or an incident involving additional explosive materials can still create serious risks for responders.
Hazard overview: UN 0372 articles are explosive articles even though their Division 1.4 classification indicates a limited explosive hazard under transport conditions. Fire or severe heat can cause individual articles or packages to burn, deflagrate, rupture or project fragments. Smoke and thermal decomposition products may also create respiratory and visibility hazards. The presence of other explosives, ammunition, propellants or pyrotechnics can significantly change the overall incident risk.
Response guidance: For a UN 0372 incident, establish incident command, verify the shipment from shipping papers and package markings, isolate unauthorized personnel and maintain appropriate standoff distance. Avoid unnecessary handling of damaged, heated or partially burned articles. Determine whether other explosive materials are present and use the current ERG Guide 114 together with product documentation and local SOP/SOG. If an article is suspicious, unexploded or its condition is uncertain, request qualified bomb-disposal or explosive-ordnance assistance rather than attempting to handle it.
Firefighter training notes: Training should emphasize that a Division 1.4 classification represents a limited explosive hazard under transport conditions, not an absence of danger. Responders should practice identification from shipping papers and markings, establish appropriate standoff distance, avoid disturbing damaged articles, recognize smoke and fire hazards, and identify the presence of additional explosives, ammunition or pyrotechnic materials that could change the incident profile.
Regulatory context: Grenades, practice is regulated as a Class 1 explosive article for transportation. Applicable packaging, quantity, storage, handling, security, reporting and emergency-response requirements depend on the specific article, jurisdiction and use. Responders should verify current requirements through shipping papers, manufacturer documentation and applicable federal, state and local regulations and fire-code requirements.
Storage & handling: Practice grenades and other Class 1 articles should be stored, handled and secured according to their approved packaging, manufacturer instructions and applicable explosive-storage requirements. Protect explosive articles from unauthorized access, excessive heat, fire, impact and other conditions identified by the applicable regulations or product documentation. Do not store or handle damaged or suspect articles as ordinary training equipment; obtain specialist guidance.
UN 0372 Quick Details
Common Hazards of UN 0372
- UN 0372 is a Class 1 explosive article and may present a fire, deflagration, blast and fragmentation hazard when exposed to severe heat, fire, impact or damage.
- The 1.4 classification indicates a limited explosive hazard under the conditions of transport, but an incident can still produce dangerous localized effects.
- Burning or heated articles may produce smoke, heat and decomposition products that can be hazardous to responders.
- Fire involving packages may cause individual articles to rupture, deflagrate or project fragments.
- The hazard can increase substantially if other explosives, ammunition, propellants or pyrotechnic articles are involved in the same incident.
- Damaged or partially burned explosive articles should not be handled unnecessarily because their condition and stability may be uncertain.
Chemical Identity & Physical Properties
Practice grenades are specialized training explosive articles. Their construction and internal components vary by design and manufacturer. Some are intended to provide training effects rather than the full effects of service ammunition, but the specific article should not be assumed to be inert solely because it is described as a practice grenade.
| Also known as | Practice grenadesTraining grenadesTraining grenade articles |
| Appearance | Practice grenades are training-oriented explosive articles designed to replicate some characteristics or handling procedures of grenades. Construction, appearance, internal components and energetic materials can vary by manufacturer and specific model. The exact contents should be confirmed from shipping papers, product documentation or the manufacturer's SDS when available. |
| Flash Point | Not applicable to the assembled explosive article as a whole. Any flammable or combustible component properties depend on the specific article and its internal materials. |
| Boiling Point | Not applicable to the assembled explosive article as a whole. |
| Vapor Density | Not applicable to the intact solid article. Vapor characteristics may depend on decomposition products or other materials released during fire or damage. |
| Water Reactivity | Do not assume a universal water-reactivity characteristic for all UN 0372 articles. Compatibility with water depends on the specific construction and energetic materials. Consult product documentation and current emergency-response guidance before applying water for purposes other than fire control. |
Fireground Response Guidance — UN 0372
Extinguishing Media
PPE Requirements
PPE selection depends on the incident conditions. Structural firefighting protective clothing and SCBA may be appropriate when firefighters are exposed to structural fire, smoke or combustion products. PPE should not be considered protection against blast or fragmentation; distance, shielding, isolation and specialist explosive-ordnance procedures remain critical.
Isolation & Evacuation
First Actions for a UN 0372 Incident
- Establish incident command and identify the material from shipping papers, package markings and available product documentation.
- Keep unauthorized personnel away from the incident area and establish appropriate standoff distance.
- Approach from a safe position and avoid smoke, heat and unnecessary exposure to damaged or burning articles.
- Eliminate ignition sources only when this can be done without approaching or disturbing the explosive articles.
- Do not move, open, dismantle or disturb damaged explosive articles unless specifically directed by qualified bomb, explosive-ordnance or HazMat personnel.
- Determine whether other explosives, ammunition, propellants or pyrotechnic materials are present and account for their potential effect on the incident.
- For fire involving the shipment, use the current ERG Guide 114 together with shipping papers, product documentation and local emergency-response procedures.
- Notify the appropriate law-enforcement, bomb-squad or explosive-ordnance authority when the condition or identity of explosive articles is uncertain or when an unexploded or suspicious article is encountered.
📋 Copy & Share Field Card
UN 0372 — 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.