If your business works with flammable substances, then a DSEAR risk assessment is more than just a box to tick.
It’s a legal requirement designed to keep people safe.
Whether you run a warehouse, garage, factory, or commercial kitchen, DSEAR applies.
What Is DSEAR?
DSEAR stands for the Dangerous Substances and Explosive Atmospheres Regulations.
It’s UK legislation that protects employees and the public from the risk of fire or explosion from dangerous substances.
These substances include:
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Flammable gases and vapours
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Combustible dusts
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Solvents and fuels
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Pressurised or oxygen-enriched gases
If your team handles any of the above, you must assess the risk.
What’s Involved in a DSEAR Risk Assessment?
A proper DSEAR risk assessment involves five key steps:
1. Identify Hazardous Substances
From cleaning chemicals to gas cylinders, everything must be logged.
2. Evaluate the Risks
Could these substances ignite or explode?
What’s the worst-case scenario?
3. Classify Hazard Zones
Define areas (Zones 0, 1, 2 or 20, 21, 22) where explosive atmospheres may form.
4. Implement Controls
This might include ventilation, ATEX-rated equipment, and staff training.
5. Review Regularly
Update your assessment when processes, substances, or layouts change.
Why DSEAR Compliance Is Crucial
Ignoring DSEAR risks prosecution, fines, business disruption—and lives.
It’s why many companies trust experienced health and safety providers who understand industry-specific challenges.
Imagine this: a small vapour leak in a storeroom.
An unseen spark.
A preventable explosion.
DSEAR exists to stop this from happening.
Who’s Responsible for DSEAR?
The employer or duty holder is legally responsible.
That means you must:
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Ensure proper storage and handling of dangerous substances
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Maintain up-to-date assessments
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Use competent health and safety advisors where needed
Don’t assume it’s someone else’s job.
Avoid These Common Mistakes
Businesses often get caught out by:
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Thinking DSEAR doesn’t apply to dusts like flour or wood
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Using generic templates that miss site-specific risks
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Failing to classify hazardous zones correctly
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Not reviewing assessments regularly
If you’re unsure, work with workplace health and safety consultants who can help you get it right first time.
How DSEAR Links to Other Regulations
DSEAR connects to broader health & safety services including:
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COSHH (hazardous substances)
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ATEX (equipment in explosive atmospheres)
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Fire safety law
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PUWER (equipment use)
This is where expert guidance really counts.
Final Thoughts
A DSEAR risk assessment isn’t just paperwork.
It’s about protecting your people, business, and future.
Work with professionals.
Keep your documentation sharp.
And never underestimate the risks of explosive atmospheres.
Get expert DSEAR risk assessment support from trusted health and safety consultants, and advisors. Reliable health & safety services. Book your assessment today.