☣️ UN 0277 • CLASS 1
UN 0277 — Cartridges, oil well
Placard: Explosive 1.3C. ERG Guide 112. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ 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.
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UN 0277 Quick Details
UN 0277
Product name: Cartridges, oil well
DOT Class: 1
Placard type: Explosive 1.3C
ERG Guide: 112 (check current ERG)
Initial isolation: ERG 112: isolate 500m in all directions; evacuate 1600m downwind if fire involves explosives; do not approach damaged cartridges
Common Hazards of UN 0277
- 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
| Also known as | Oil well cartridgesWell stimulation cartridgesPerforating cartridgesDownhole explosive cartridges |
| Appearance | Metal cartridges containing explosive charges designed for use in oil and gas well operations. Typically cylindrical devices with detonating cords or explosive materials sealed within metal casings. |
| 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 under normal conditions |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 0277
Extinguishing Media
Do not use water directly on explosives; use dry chemical, CO2, or sand from distance if fire involves surroundings only
PPE Requirements
⚠️ Level B minimum; SCBA required; full protective clothing; maintain safe distance due to fragment projection risk
Isolation & Evacuation
ERG 112: isolate 500m in all directions; evacuate 1600m downwind if fire involves explosives; do not approach damaged cartridges
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 112).
First Actions for a UN 0277 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.
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UN 0277 — Cartridges, oil wellHAZMAT RADIO NOTE — UN 0277
Product: Cartridges, oil well
Class 1 / Explosive 1.3C / ERG 112
PPE: Level B minimum; SCBA required; full protective clothing; maintain safe distance due to fragment projection risk
ISOLATION: ERG 112: isolate 500m in all directions; evacuate 1600m downwind if fire involves explosives; do not approach damaged cartridges
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 0277 — Cartridges, oil well
Class: 1 | Placard: Explosive 1.3C | ERG Guide: 112
Appearance: Metal cartridges containing explosive charges designed for use in oil and gas well operations. Typically cylindrical devices with detonating cords or explosive materials sealed within metal casings.
Water Reactivity: No significant reaction with water under normal conditions
Extinguishing: Do not use water directly on explosives; use dry chemical, CO2, or sand from distance if fire involves surroundings only
PPE: Level B minimum; SCBA required; full protective clothing; maintain safe distance due to fragment projection risk
Isolation: ERG 112: isolate 500m in all directions; evacuate 1600m downwind if fire involves explosives; do not approach damaged cartridges
— Key Hazards —
• Fire and burning hazard — not mass explosion.
• Intense heat and possible fragment projection.
• May deflagrate and initiate other materials.
— First Actions —
• 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.
SOURCE: allfirefighter.com/hazmat/un/0277 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0277 Cartridges, oil well Cls1 ERG112 | ERG 112: isolate 500m in all directions; evacuate 1600m downwind if fire involve | allfirefighter.com/hazmat/un/0277SMS / 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/0277
Related UN Numbers in Class 1
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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Frequently Asked Questions about UN 0277
Fire and burning hazard — not mass explosion. Intense heat and possible fragment projection. May deflagrate and initiate other materials. Smoke and toxic combustion products.
CALL 911. Then call emergency response telephone number on shipping paper. Isolate area; stage upwind — fire and fragment hazard. Request Hazmat + law enforcement.
Level B minimum; SCBA required; full protective clothing; maintain safe distance due to fragment projection risk
Water reactivity: No significant reaction with water under normal conditions. Recommended extinguishing: Do not use water directly on explosives; use dry chemical, CO2, or sand from distance if fire involves surroundings only.
ERG Guide 112 recommendation: ERG 112: isolate 500m in all directions; evacuate 1600m downwind if fire involves explosives; do not approach damaged cartridges
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.