☣️ UN 3528 • CLASS 3

UN 3528 — Machinery, internal combustion, flammable liquid powered

Placard: Flammable. ERG Guide 128. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.

🚒☣️

⚠️ Verification required: Broad or variable material category; verify exact product, SDS and shipping papers.

⚠️ 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.

UN 3528 is Machinery, internal combustion, flammable liquid powered, machinery with flammable liquid fuel assigned to ERG Guide 128. Fuel leaks, vapors and runoff control drive response.

Hazard overview: Internal-combustion machinery containing flammable liquid fuel; damaged fuel systems can leak ignitable liquid or vapor. Fuel vapors may travel to ignition sources and flash back. Vapors from gasoline or similar fuels are heavier than air and may collect in low areas.

Response guidance: For UN 3528, isolate the machinery, eliminate ignition sources and control fuel leaks. Use SCBA for fire/vapor buildup and contain petroleum runoff under ERG 128.

Firefighter training notes: Training for UN 3528 should emphasize ignition control, fuel-system recognition, vapor/gas monitoring, cylinder or tank cooling, SCBA use and runoff control. Use ERG 128 and local SOP.

Regulatory context: Machinery, internal combustion, flammable liquid powered is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, package type, gas identity and jurisdiction; verify shipping papers, SDS and authority guidance.

Storage & handling: Machinery, internal combustion, flammable liquid powered should be stored away from ignition sources, heat and physical damage, with fuel/gas shutoffs secured and ventilation maintained where vapor or gas can accumulate.

UN 3528 Quick Details

UN 3528

Product name: Machinery, internal combustion, flammable liquid powered

DOT Class: 3

Placard type: Flammable

ERG Guide: 128 (check current ERG)

Initial isolation: ERG 128: Isolate spill 25m all directions; if tank/fuel system ruptured or fire involved, isolate 800m and consider evacuation 800m downwind

Common Hazards of UN 3528

Internal-combustion machinery containing flammable liquid fuel; damaged fuel systems can leak ignitable liquid or vapor.
Fuel vapors may travel to ignition sources and flash back.
Vapors from gasoline or similar fuels are heavier than air and may collect in low areas.
Fuel may float on water and spread fire or contamination.
Fire may involve plastics, oils, hydraulic fluids and equipment components.
Runoff may carry petroleum contamination.
Exact fuel type, tank condition and residual quantity must be verified.

Chemical Identity & Physical Properties

Mechanical equipment or vehicles containing internal combustion engines with flammable liquid fuel (gasoline, diesel) in tanks or fuel systems. Appearance varies based on machinery type; may emit petroleum odor from fuel.

Also known as	Internal combustion engine equipmentGasoline-powered machineryPetrol-powered equipmentFlammable liquid engine machineryICE machinery with fuel
Appearance	Mechanical equipment or vehicles containing internal combustion engines with flammable liquid fuel (gasoline, diesel) in tanks or fuel systems. Appearance varies based on machinery type; may emit petroleum odor from fuel.
Flash Point	Varies by fuel type: gasoline approximately -43°C (-45°F), diesel 52°C (126°F)
Boiling Point	Varies by fuel type: gasoline 38-204°C (100-400°F), diesel 180-360°C (356-680°F)
Vapor Density	Vapors heavier than air (gasoline vapor density ~3-4, diesel ~4.5)
Water Reactivity	No significant reaction with water; fuel may float on water surface

Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.

Fireground Response Guidance — UN 3528

Extinguishing Media

Use AFFF or alcohol-resistant foam based on fuel, dry chemical or CO2. Water spray may cool machinery; contain petroleum runoff.

PPE Requirements

⚠️ Level D minimum for handling; Level B with SCBA if fire or fuel leak with vapor accumulation

Use positive-pressure SCBA where vapor, gas, dust, smoke or fire is present. Wear eye/face, hand and body protection suitable for the article or fuel.

Isolation & Evacuation

ERG 128: Isolate spill 25m all directions; if tank/fuel system ruptured or fire involved, isolate 800m and consider evacuation 800m downwind

Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 128).

First Actions for a UN 3528 Incident

Call 911 and the emergency response number on the shipping paper, if available.
Keep unauthorized personnel away and establish incident command.
Stay upwind, uphill and upstream.
Eliminate ignition sources if this can be done safely.
Avoid breathing vapor, gas, dust, mist, smoke or fumes and avoid skin or eye contact.
Do not touch damaged containers, equipment, articles or spilled material without proper training and PPE.
Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
Ventilate confined spaces only after monitoring and only if properly trained and equipped.
Use ERG Guide 128, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.

📋 Copy & Share Field Card

UN 3528 — Machinery, internal combustion, flammabl

HAZMAT RADIO NOTE — UN 3528 Product: Machinery, internal combustion, flammable liquid powered Class 3 / Flammable / ERG 128 PPE: Level D minimum for handling; Level B with SCBA if fire or fuel leak with vapor accumulation ISOLATION: ERG 128: Isolate spill 25m all directions; if tank/fuel system ruptured or fire involved, isolate 800m and consider evacuation 800m downwind ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO

Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.

SMS WhatsApp

=== IC HAZMAT BRIEFING === UN 3528 — Machinery, internal combustion, flammable liquid powered Class: 3 | Placard: Flammable | ERG Guide: 128 Appearance: Mechanical equipment or vehicles containing internal combustion engines with flammable liquid fuel (gasoline, diesel) in tanks or fuel systems. Appearance varies based on machinery type; may emit petroleum odor from fuel. Water Reactivity: No significant reaction with water; fuel may float on water surface Extinguishing: Use AFFF or alcohol-resistant foam based on fuel, dry chemical or CO2. Water spray may cool machinery; contain petroleum runoff. PPE: Level D minimum for handling; Level B with SCBA if fire or fuel leak with vapor accumulation Isolation: ERG 128: Isolate spill 25m all directions; if tank/fuel system ruptured or fire involved, isolate 800m and consider evacuation 800m downwind — Key Hazards — • Internal-combustion machinery containing flammable liquid fuel; damaged fuel systems can leak ignitable liquid or vapor. • Fuel vapors may travel to ignition sources and flash back. • Vapors from gasoline or similar fuels are heavier than air and may collect in low areas. — First Actions — • Call 911 and the emergency response number on the shipping paper, if available. • Keep unauthorized personnel away and establish incident command. • Stay upwind, uphill and upstream. • Eliminate ignition sources if this can be done safely. SOURCE: allfirefighter.com/hazmat/un/machinery-internal-combustion-flammable-un-3528 | Always use current ERG + SOP/SOGIC BRIEFING

Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.

SMS (short)

UN3528 Machinery, internal combustion, flammable liquid powered Cls3 ERG128 | allfirefighter.com/hazmat/un/machinery-internal-combustion-flammable-un-3528SMS / 160 CHAR

Use for: Quick text to command or incoming units. Fits in a single SMS.

Open in Messages WhatsApp

⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/machinery-internal-combustion-flammable-un-3528

Related UN Numbers in Class 3

Open Class Guide →Hazmat Hub →

UN 1088 UN 1089 UN 1090 UN 1091 UN 1104 UN 1105 UN 1106 UN 1107 UN 1108 UN 1109 UN 1110 UN 1111

Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.

Frequently Asked Questions about UN 3528

UN 3528 is Machinery, internal combustion, flammable liquid powered, assigned to ERG Guide 128.

Yes. Machinery, internal combustion, flammable liquid powered can release flammable gas or vapor that may ignite and flash back.

Internal-combustion machinery containing flammable liquid fuel; damaged fuel systems can leak ignitable liquid or vapor. Fuel vapors may travel to ignition sources and flash back. Vapors from gasoline or similar fuels are heavier than air and may collect in low areas.

Use positive-pressure SCBA where vapor, gas, dust, smoke or fire is present. Wear eye/face, hand and body protection suitable for the article or fuel.

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.