☣️ UN 3530 • CLASS 9
UN 3530 — Machinery, internal combustion
Placard: Miscellaneous. ERG Guide 171. 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 3530 Quick Details
UN 3530
Product name: Machinery, internal combustion
DOT Class: 9
Placard type: Miscellaneous
ERG Guide: 171 (check current ERG)
Initial isolation: ERG 171: no general isolation required; if involved in fire, isolate 25m all directions; if heated/damaged, treat as potential fuel spill
Common Hazards of UN 3530
- Some may burn but none ignite readily.
- Containers may explode when heated.
- Some may be transported hot.
- For UN3508, Capacitor, asymmetric, be aware of possible short circuiting as this product is transported
- Polymeric beads, expandable (UN2211) may evolve flammable vapours.
- Inhalation of material may be harmful.
- Contact may cause burns to skin and eyes.
- Inhalation of Asbestos dust may have a damaging effect on the lungs.
Chemical Identity & Physical Properties
| Also known as | Internal combustion engineCombustion machineryEngine assemblyMotor unitICE machinery |
| Appearance | Solid mechanical equipment consisting of metal engine components, typically gray or black in color, may contain residual fuels, oils, or other operating fluids; transported as assembled or partially assembled units. |
| Flash Point | Not applicable (machinery article) |
| Boiling Point | Not applicable (machinery article) |
| Vapor Density | Not applicable (machinery article) |
| Water Reactivity | No significant reaction; water may be used for cooling hot machinery |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3530
Extinguishing Media
Water spray, foam, CO2, dry chemical appropriate for any fuel residues present
PPE Requirements
⚠️ Standard industrial PPE; heat-resistant gloves if machinery transported hot; eye protection; SCBA if fire involves fuel/oil residues
Isolation & Evacuation
ERG 171: no general isolation required; if involved in fire, isolate 25m all directions; if heated/damaged, treat as potential fuel spill
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 171).
First Actions for a UN 3530 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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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📋 Copy & Share Field Card
UN 3530 — Machinery, internal combustionHAZMAT RADIO NOTE — UN 3530
Product: Machinery, internal combustion
Class 9 / Miscellaneous / ERG 171
PPE: Standard industrial PPE; heat-resistant gloves if machinery transported hot; eye protection; SCBA if fire involves fuel/oil residues
ISOLATION: ERG 171: no general isolation required; if involved in fire, isolate 25m all directions; if heated/damaged, treat as potential fuel spill
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 3530 — Machinery, internal combustion
Class: 9 | Placard: Miscellaneous | ERG Guide: 171
Appearance: Solid mechanical equipment consisting of metal engine components, typically gray or black in color, may contain residual fuels, oils, or other operating fluids; transported as assembled or partially assembled units.
Water Reactivity: No significant reaction; water may be used for cooling hot machinery
Extinguishing: Water spray, foam, CO2, dry chemical appropriate for any fuel residues present
PPE: Standard industrial PPE; heat-resistant gloves if machinery transported hot; eye protection; SCBA if fire involves fuel/oil residues
Isolation: ERG 171: no general isolation required; if involved in fire, isolate 25m all directions; if heated/damaged, treat as potential fuel spill
— Key Hazards —
• Some may burn but none ignite readily.
• Containers may explode when heated.
• Some may be transported hot.
— 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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/3530 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3530 Machinery, internal combustion Cls9 ERG171 | allfirefighter.com/hazmat/un/3530SMS / 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/3530
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Frequently Asked Questions about UN 3530
Some may burn but none ignite readily. Containers may explode when heated. Some may be transported hot. For UN3508, Capacitor, asymmetric, be aware of possible short circuiting as this product is transported Polymeric beads, expandable (UN2211) may evolve flammable vapours. Inhalation of material may be harmful. Contact may cause burns to skin and eyes. Inhalation of Asbestos dust may have a damaging effect on the lungs.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Standard industrial PPE; heat-resistant gloves if machinery transported hot; eye protection; SCBA if fire involves fuel/oil residues
Water reactivity: No significant reaction; water may be used for cooling hot machinery. Recommended extinguishing: Water spray, foam, CO2, dry chemical appropriate for any fuel residues present.
ERG Guide 171 recommendation: ERG 171: no general isolation required; if involved in fire, isolate 25m all directions; if heated/damaged, treat as potential fuel spill
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 171 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.