☣️ UN 3363 • CLASS 9
UN 3363 — Dangerous goods in apparatus
Placard: Miscellaneous. ERG Guide 171. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ 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.
Dangerous goods in apparatus may include equipment or machinery containing batteries, extinguishers, fuel reservoirs or other small hazardous components.
Hazard overview: Hazards depend on the article and its contents. Damaged equipment may leak, vent, ignite, short circuit or release harmful vapors.
Response guidance: Identify the apparatus, check labels and shipping papers, isolate damaged items and choose extinguishing media for the specific contents.
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UN 3363 Quick Details
UN 3363
Product name: Dangerous goods in apparatus
DOT Class: 9
Placard type: Miscellaneous
ERG Guide: 171 (check current ERG)
Initial isolation: ERG 171: No initial isolation required for small incidents; if large quantities or fire involved, isolate 25m in all directions
Common Hazards of UN 3363
- 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
Various articles, apparatus, machinery, or equipment containing small quantities of dangerous goods (such as batteries, fire extinguishers, airbag inflators, or fuel reservoirs). Physical form and appearance depend on the specific article.
| Also known as | Dangerous goods in machineryDangerous goods in equipmentArticles containing dangerous goodsMachinery containing hazardous materials |
| Appearance | Various articles, apparatus, machinery, or equipment containing small quantities of dangerous goods (such as batteries, fire extinguishers, airbag inflators, or fuel reservoirs). Physical form and appearance depend on the specific article. |
| Flash Point | Varies depending on contained dangerous goods; not applicable as a bulk chemical |
| Boiling Point | Not applicable; UN 3363 covers manufactured articles, not bulk substances |
| Vapor Density | Not applicable; refers to complete articles/equipment, not vapors |
| Water Reactivity | Generally no significant water reactivity for the articles themselves; internal dangerous goods may vary |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3363
Extinguishing Media
Dry chemical, CO2, water spray, or foam appropriate for the specific dangerous goods contained within the article
PPE Requirements
⚠️ Level D typically adequate for intact articles; upgrade to Level C with SCBA if articles are damaged and contents released
Level D may be adequate for intact articles; use SCBA and upgraded protection if damaged contents are released or burning.
Isolation & Evacuation
ERG 171: No initial isolation required for small incidents; if large quantities or fire involved, isolate 25m in all directions
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 171).
First Actions for a UN 3363 Incident
- CALL 911. Then call the emergency response telephone number on the shipping paper, if available.
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Isolate the spill or leak area in all directions; use the ERG guide and shipping papers to set exact distances.
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials, increase downwind precautions when vapor, dust, or runoff hazards are present.
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📋 Copy & Share Field Card
UN 3363 — Dangerous goods in apparatusHAZMAT RADIO NOTE — UN 3363
Product: Dangerous goods in apparatus
Class 9 / Miscellaneous / ERG 171
PPE: Level D typically adequate for intact articles; upgrade to Level C with SCBA if articles are damaged and contents released
ISOLATION: ERG 171: No initial isolation required for small incidents; if large quantities or fire involved, isolate 25m 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 3363 — Dangerous goods in apparatus
Class: 9 | Placard: Miscellaneous | ERG Guide: 171
Appearance: Various articles, apparatus, machinery, or equipment containing small quantities of dangerous goods (such as batteries, fire extinguishers, airbag inflators, or fuel reservoirs). Physical form and appearance depend on the specific article.
Water Reactivity: Generally no significant water reactivity for the articles themselves; internal dangerous goods may vary
Extinguishing: Dry chemical, CO2, water spray, or foam appropriate for the specific dangerous goods contained within the article
PPE: Level D typically adequate for intact articles; upgrade to Level C with SCBA if articles are damaged and contents released
Isolation: ERG 171: No initial isolation required for small incidents; if large quantities or fire involved, isolate 25m in all directions
— 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 the emergency response telephone number on the shipping paper, if available.
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Isolate the spill or leak area in all directions; use the ERG guide and shipping papers to set exact distances.
SOURCE: allfirefighter.com/hazmat/un/dangerous-goods-in-apparatus-un-3363 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN3363 Dangerous goods in apparatus Cls9 ERG171 | allfirefighter.com/hazmat/un/dangerous-goods-in-apparatus-un-3363SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/dangerous-goods-in-apparatus-un-3363
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Frequently Asked Questions about UN 3363
UN 3363 covers dangerous goods contained in apparatus, machinery or equipment.
No. Fire risk depends on the dangerous goods inside the apparatus.
Check the article, markings, shipping papers and any signs of leakage or damage.
Use water only if compatible with the contained dangerous goods.
Upgrade from routine PPE to SCBA and chemical protection if contents leak or burn.
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.