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Danger Highly Flammable Material Signs
Danger Highly Flammable Material Signs warn you where fuels, solvents, aerosols or chemical products could ignite. They help staff, contractors and visitors recognise W021 flammable risk before entering stores, plant rooms, workshops or external storage areas.
Where Danger Highly Flammable Material Signs Should Be Installed
Install these signs at entrances to flammable stores, fuel handling points, chemical cupboards, workshops, plant rooms and external cages. Position them before the hazard so you give people time to stop, remove ignition sources and follow your controls.
Practical Viewing Distance Guidance
Choose a size that matches how early you need the warning seen. Small signs suit close-range cupboards, while larger signs work better on stores, gates and access routes where people approach from several metres away.
| Sign size | Best viewing use | Practical distance |
|---|---|---|
| H 100 x W 250 mm | Close-range storage doors | Up to 3 metres |
| H 297 x W 210 mm | Workshops and access points | Up to 8 metres |
| H 420 x W 297 mm | External stores and wider approaches | Up to 12 metres |
What Improves After You Display This Flammable Material Warning
Once fitted in the right position, the sign helps people pause before entering a flammable-risk area, check for ignition sources, handle stored substances more carefully and follow site controls without needing repeated verbal reminders.
Technical Details for the Highly Flammable Material Warning Sign
- Sign message: "Danger Highly Flammable Material"
- Purpose: warns of highly flammable materials
- Conforms to EN ISO 7010
- EN ISO 7010 code: W021
- Conforms to BS 5499 sign regulations
- Sign type: hazard warning
- Materials: rigid plastic or self-adhesive vinyl
- Finish: glossy film surface
- Background colour: yellow
- Text colour: black
- Symbol colour: black
- Pictogram: black flame in yellow warning triangle
- Shape: rectangle
- Orientation: portrait
- Size: H 100 x W 250 mm
- Size: H 150 x W 125 mm
- Size: H 210 x W 148 mm
- Size: H 297 x W 210 mm
- Size: H 420 x W 297 mm
- Display area: indoors or outdoors
- Fixing: adhesive vinyl or separate rigid fixings
Fitting Advice for Flammable Material Risk Areas
❌ Fitting the sign after the hazard, where people see it too late.
❌ Placing it behind stored stock, open doors or racking.
❌ Using a small size on a wide external approach.
❌ Relying on signage instead of controlling ignition sources.
❌ Using it alone where no smoking controls are also required.
❌ Fitting vinyl to dirty, damp or uneven surfaces.
✅ Place it at eye level before the storage or handling point.
✅ Match the size to the distance people approach from.
✅ Use rigid plastic where the surface needs separate fixings.
Danger Highly Flammable Material Signs Questions Answered
What are Danger Highly Flammable Material Signs used for? They warn people that highly flammable materials are present, helping staff, contractors and visitors control ignition risks before entering or working nearby.
Where should you fit a W021 flammable material sign? Fit it before the hazard, such as on store doors, chemical rooms, fuel points, plant rooms, workshops or external storage entrances.
Is this sign suitable for both indoor and outdoor use? Yes, it can be used indoors or outdoors when you choose the material and fixing method that suits the surface and exposure level.
Should this sign replace fire prevention procedures? No. It supports your controls, but you still need safe storage, ignition control, staff training and risk assessment measures.
Which size should you choose for a flammable material warning? Use smaller sizes for close viewing on cupboards or doors, and larger sizes for wider approach routes, external stores and busier work areas.
Danger Highly Flammable Material Signs Features and Benefits
- ✓ EN ISO 7010 W021 flame warning symbol
- ✓ Clear black text on a yellow hazard background
- ✓ Rigid plastic and self-adhesive vinyl options
- ✓ Multiple sizes for cupboards, doors and stores
- ✓ Helps people spot flammable risk before entering
- ✓ Supports safer behaviour around fuels and solvents
- ✓ Gives you flexible fitting for different surfaces
- ✓ Makes the warning easier to match to viewing range
Related highly flammable material signs
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