☣️ UN 3497 • CLASS 4
Krill meal
Placard: Spontaneously Combustible. 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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Quick details
UN 3497
Class: 4
Placard type: Spontaneously Combustible
ERG: Guide 133 (check current ERG)
Isolation: ERG 133: isolate spill or leak area immediately for at least 25-50 meters in all directions; if tank/rail car involved in fire, isolate 800 meters in all directions
Chemical & Response Details
| Also known as | Krill mealAntarctic krill mealEuphausia superba mealFish meal (krill)Crustacean meal |
| Appearance | Reddish-brown to pink-brown granular or powdered meal with a characteristic fishy odor. Solid material at room temperature derived from processed krill crustaceans. |
| Flash Point | Not precisely defined; combustible solid, ignition temperature varies with particle size and moisture content |
| Boiling Point | Not applicable (solid organic material that decomposes upon heating) |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | No significant reaction with water; may absorb moisture and become more prone to spontaneous heating |
| Extinguishing | Dry chemical, CO2, water spray for cooling, foam for large fires; avoid creating dust clouds |
| PPE | ⚠️ Level C minimum; SCBA recommended in confined spaces or heavy smoke; protect against dust inhalation and skin contact |
| Isolation | ERG 133: isolate spill or leak area immediately for at least 25-50 meters in all directions; if tank/rail car involved in fire, isolate 800 meters in all directions |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- 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.
First actions (field-minded)
- 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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UN 3497 — Krill meal HAZMAT RADIO NOTE — UN 3497
Product: Krill meal
Class 4 / Spontaneously Combustible / ERG 133
PPE: Level C minimum; SCBA recommended in confined spaces or heavy smoke; protect against dust inhalation and skin contact
ISOLATION: ERG 133: isolate spill or leak area immediately for at least 25-50 meters in all directions; if tank/rail car involved in fire, isolate 800 meters in all directions
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 3497 — Krill meal
Class: 4 | Placard: Spontaneously Combustible | ERG Guide: 133
Appearance: Reddish-brown to pink-brown granular or powdered meal with a characteristic fishy odor. Solid material at room temperature derived from processed krill crustaceans.
Water Reactivity: No significant reaction with water; may absorb moisture and become more prone to spontaneous heating
Extinguishing: Dry chemical, CO2, water spray for cooling, foam for large fires; avoid creating dust clouds
PPE: Level C minimum; SCBA recommended in confined spaces or heavy smoke; protect against dust inhalation and skin contact
Isolation: ERG 133: isolate spill or leak area immediately for at least 25-50 meters in all directions; if tank/rail car involved in fire, isolate 800 meters in all directions
— 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/3497 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3497 Krill meal Cls4 ERG133 | ERG 133: isolate spill or leak area immediately for at least 25-50 meters in all | allfirefighter.com/hazmat/un/3497SMS / 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/3497
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FAQ
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 recommended in confined spaces or heavy smoke; protect against dust inhalation and skin contact
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.