☣️ UN 1374 • CLASS 4
UN 1374 — Fish scrap, unstabilized
Placard: Spontaneously Combustible. ERG Guide 133. 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 1374 Quick Details
UN 1374
Product name: Fish scrap, unstabilized
DOT Class: 4
Placard type: Spontaneously Combustible
ERG Guide: 133 (check current ERG)
Initial isolation: ERG 133: isolate spill area 25m in all directions; if tank/cargo is on fire, isolate 800m and consider evacuation
Common Hazards of UN 1374
- Flammable/combustible material.
- May be ignited by friction, heat, sparks or flames.
- Some may burn rapidly with flare-burning effect.
- Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence.
- Substance may be transported in a molten form at a temperature that may be above its flash point.
- May re-ignite after fire is extinguished.
- Fire may produce irritating and/or toxic gases.
- Contact may cause burns to skin and eyes.
Chemical Identity & Physical Properties
| Also known as | fish mealfish wastefish residueunstabilized fish mealfish processing waste |
| Appearance | Dry, brownish to tan granular or powdery solid with a strong fishy odor. Organic waste material from fish processing operations. |
| Flash Point | Not applicable (spontaneously combustible solid) |
| Boiling Point | Not applicable (solid material) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction, but wetting may increase heat generation and spontaneous combustion risk |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1374
Extinguishing Media
Dry chemical, CO2, water spray for cooling; avoid stirring material which may increase heating
PPE Requirements
⚠️ Level C minimum; SCBA if material is smoldering or on fire; protect against dust inhalation
Isolation & Evacuation
ERG 133: isolate spill area 25m in all directions; if tank/cargo is on fire, isolate 800m and consider evacuation
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 133).
First Actions for a UN 1374 Incident
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Isolate spill or leak area for at least 25 meters (75 feet) in all directions.
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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📋 Copy & Share Field Card
UN 1374 — Fish scrap, unstabilizedHAZMAT RADIO NOTE — UN 1374
Product: Fish scrap, unstabilized
Class 4 / Spontaneously Combustible / ERG 133
PPE: Level C minimum; SCBA if material is smoldering or on fire; protect against dust inhalation
ISOLATION: ERG 133: isolate spill area 25m in all directions; if tank/cargo is on fire, isolate 800m and consider evacuation
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 1374 — Fish scrap, unstabilized
Class: 4 | Placard: Spontaneously Combustible | ERG Guide: 133
Appearance: Dry, brownish to tan granular or powdery solid with a strong fishy odor. Organic waste material from fish processing operations.
Water Reactivity: No significant reaction, but wetting may increase heat generation and spontaneous combustion risk
Extinguishing: Dry chemical, CO2, water spray for cooling; avoid stirring material which may increase heating
PPE: Level C minimum; SCBA if material is smoldering or on fire; protect against dust inhalation
Isolation: ERG 133: isolate spill area 25m in all directions; if tank/cargo is on fire, isolate 800m and consider evacuation
— Key Hazards —
• Flammable/combustible material.
• May be ignited by friction, heat, sparks or flames.
• Some may burn rapidly with flare-burning effect.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Isolate spill or leak area for at least 25 meters (75 feet) in all directions.
SOURCE: allfirefighter.com/hazmat/un/1374 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1374 Fish scrap, unstabilized Cls4 ERG133 | allfirefighter.com/hazmat/un/1374SMS / 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/1374
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Frequently Asked Questions about UN 1374
Flammable/combustible material. May be ignited by friction, heat, sparks or flames. Some may burn rapidly with flare-burning effect. Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence. Substance may be transported in a molten form at a temperature that may be above its flash point. May re-ignite after fire is extinguished. Fire may produce irritating and/or toxic gases. Contact may cause burns to skin and eyes.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level C minimum; SCBA if material is smoldering or on fire; protect against dust inhalation
Water reactivity: No significant reaction, but wetting may increase heat generation and spontaneous combustion risk. Recommended extinguishing: Dry chemical, CO2, water spray for cooling; avoid stirring material which may increase heating.
ERG Guide 133 recommendation: ERG 133: isolate spill area 25m in all directions; if tank/cargo is on fire, isolate 800m and consider evacuation
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 133 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.