☣️ UN 0056 • CLASS 1
Charges, depth
Placard: Explosive 1.1D. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ This page is a quick-reference aid. For real incidents: stage upwind, isolate, deny entry, request Hazmat early, and consult the current ERG + SOP/SOG.
Advertisement
Quick details
UN 0056
Class: 1
Placard type: Explosive 1.1D
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Isolate 500m in all directions as immediate precautionary distance; if fire or explosion is involved, evacuate 1600m radius
Chemical & Response Details
| Also known as | Depth chargesUnderwater explosive chargesAnti-submarine chargesNaval depth bombs |
| Appearance | Cylindrical or spherical metal casings containing high explosives (TNT, RDX, or similar). Typically dark gray or olive drab painted steel containers designed for underwater detonation. |
| Flash Point | Not applicable (explosive device) |
| Boiling Point | Not applicable (explosive device) |
| Vapor Density | Not applicable (solid explosive device) |
| Water Reactivity | Designed for underwater use; explosive filling is water-resistant but device may be shock-sensitive when submerged. |
| Extinguishing | Do not use water or foam; fight fire from maximum distance using unmanned hose holders or monitor nozzles only if absolutely necessary |
| PPE | ⚠️ Evacuate area immediately; no firefighting should be attempted; if involved in fire, evacuate 1600m radius and allow to burn |
| Isolation | ERG 112: Isolate 500m in all directions as immediate precautionary distance; if fire or explosion is involved, evacuate 1600m radius |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Mass explosion hazard — entire load may detonate simultaneously.
- Severe blast overpressure and fragmentation.
- Sensitive to heat, shock, and friction.
- Secondary fire and debris hazard.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper.
- Establish large isolation zone — minimum 500 meters in all directions.
- Stage upwind, uphill; limit personnel to essential responders only.
- Request Hazmat + law enforcement + additional resources immediately.
- Do not fight fire — evacuate and isolate; let burn if no life safety risk.
- Protect exposures only if safe and directed by command.
- Consult current ERG Guide 112 and follow SOP/SOG.
Advertisement
📋 Copy & Share
UN 0056 — Charges, depth HAZMAT RADIO NOTE — UN 0056
Product: Charges, depth
Class 1 / Explosive 1.1D / ERG 112
PPE: Evacuate area immediately; no firefighting should be attempted; if involved in fire, evacuate 1600m radius and allow to burn
ISOLATION: ERG 112: Isolate 500m in all directions as immediate precautionary distance; if fire or explosion is involved, evacuate 1600m radius
ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO
Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
=== IC HAZMAT BRIEFING ===
UN 0056 — Charges, depth
Class: 1 | Placard: Explosive 1.1D | ERG Guide: 112
Appearance: Cylindrical or spherical metal casings containing high explosives (TNT, RDX, or similar). Typically dark gray or olive drab painted steel containers designed for underwater detonation.
Water Reactivity: Designed for underwater use; explosive filling is water-resistant but device may be shock-sensitive when submerged.
Extinguishing: Do not use water or foam; fight fire from maximum distance using unmanned hose holders or monitor nozzles only if absolutely necessary
PPE: Evacuate area immediately; no firefighting should be attempted; if involved in fire, evacuate 1600m radius and allow to burn
Isolation: ERG 112: Isolate 500m in all directions as immediate precautionary distance; if fire or explosion is involved, evacuate 1600m radius
— Key Hazards —
• Mass explosion hazard — entire load may detonate simultaneously.
• Severe blast overpressure and fragmentation.
• Sensitive to heat, shock, and friction.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper.
• Establish large isolation zone — minimum 500 meters in all directions.
• Stage upwind, uphill; limit personnel to essential responders only.
• Request Hazmat + law enforcement + additional resources immediately.
SOURCE: allfirefighter.com/hazmat/un/0056 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0056 Charges, depth Cls1 ERG112 | ERG 112: Isolate 500m in all directions as immediate precautionary distance; if | allfirefighter.com/hazmat/un/0056SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS. Includes link to full page.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/0056
Related UN numbers (same class)
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
Advertisement
FAQ
Mass explosion hazard — entire load may detonate simultaneously. Severe blast overpressure and fragmentation. Sensitive to heat, shock, and friction. Secondary fire and debris hazard.
CALL 911. Then call emergency response telephone number on shipping paper. Establish large isolation zone — minimum 500 meters in all directions. Stage upwind, uphill; limit personnel to essential responders only.
Evacuate area immediately; no firefighting should be attempted; if involved in fire, evacuate 1600m radius and allow to burn
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 112 and your department SOP/SOG for incident-specific protective actions.
Sources (high level): DOT/PHMSA marking & class concepts + ERG usage principles. This page does not reproduce ERG guide text—always consult the current ERG for incident-specific protective actions.