The health and safety world is full of acronyms, and DSEAR is one of them. Ever heard of it?
It stands for Dangerous Substances and Explosive Atmospheres Regulations, and it applies to far more UK workplaces than you might realise.
DSEAR exists because fires and explosions in the workplace cause deaths, serious injuries and devastating damage year in, year out. Often, in businesses that didn’t realise they were handling dangerous substances.
If your workplace uses petrol, aerosols, flammable gases, combustible dusts or even common chemicals, you need to read this blog.
What Is DSEAR?
The regulations came into force in 2002 and apply to all workplaces in Great Britain. DSEAR sits alongside other health and safety legislation but specifically addresses the risks posed by dangerous substances that could cause fires, explosions, or other energy-releasing events if not properly controlled.
DSEAR replaced older regulations to clarify employers’ responsibility for managing these specific hazards.
What Are ‘Dangerous Substances’ Under DSEAR?
Under DSEAR, a dangerous substance is any substance that could cause a fire, explosion or other hazardous event due to its chemical or physical make-up. Here are some examples:
- Petrol, diesel and other fuels
- Liquefied petroleum gas (LPG)
- Paints, varnishes and solvents
- Aerosol sprays
- Certain cleaning products
- Dusts from flour, wood, metal or plastics
- Gases like acetylene or propane
- Flammable liquids used in manufacturing
Did any surprise you? Dust probably wasn’t the first thing that came to mind when thinking about hazardous substances, yet flour, wood dust, and metal dust can accumulate to create explosive atmospheres.
Who Does DSEAR Apply To?
DSEAR applies to many more workplaces than you might expect. It places responsibilities on:
- Employers
- Self-employed persons
- Employees (who have a legal duty to cooperate with processes and procedures)
Where It Applies
DSEAR applies anywhere dangerous substances are used, stored or created.
This often includes, but is not limited to:
- Offices
- Warehouses
- Workshops
- Factories
- Garages
- Retail premises
Unsure if DSEAR applies to you? If you store cleaning products, use aerosols, keep fuel for powering equipment or create those combustible dusts we’ve already mentioned… You have DSEAR obligations.
DSEAR: The Key Requirements
DSEAR supports employers in managing dangerous substances in the workplace by providing a clear framework. If your workplace falls under DSEAR, you must do the following…
1. Carry Out a DSEAR Risk Assessment
You are legally required to carry out a DSEAR risk assessment that identifies:
- What dangerous substances are present
- Where and how they could cause a fire or explosion
- Who could be harmed
- What control measures are required?
This assessment must be suitable and sufficient, reviewed regularly and updated when anything changes.
2. Eliminate or Reduce Risk
Once risks have been identified, you must follow the hierarchy of control by:
- Eliminating the dangerous substance, if possible, by substituting it with a safer substance
- Reducing quantities to the minimum needed for the task in question
- Controlling the risks through proper storage, safe handling and engineering measures
- Mitigating the effects if something goes wrong.
3. Provide Information, Instruction and Training
Anyone who may be around the dangerous substances in your workplace must understand:
- What dangerous substances are present
- The risks they pose
- How to work safely with them
- The emergency procedures that are in place.
4. Identify and Classify Hazardous Areas
If the dangerous substances in your workplace create an explosive atmosphere, you must:
- Classify the area into zones (0, 1, 2 for gases/vapours or 20, 21, 22 for dusts)
- Mark these areas with warning signs
- Ensure only suitable equipment is used in these zones
(Keep reading – we’ll cover more about hazardous areas in the next section).
5. Put Explosion Protection Measures in Place
Where explosion risks can’t be eliminated, systems must be in place to:
- Prevent ignition sources
- Detect dangerous atmospheres
- Provide adequate ventilation
- Provide explosion relief or suppression where appropriate.
6. Prepare Emergency Plans
You must have crystal clear arrangements to:
- Respond to accidents and emergencies
- Provide appropriate first aid and emergency equipment
- Ensure safe evacuation of your workplace.
Understanding Hazardous Area Classification
DSEAR is a complex set of regulations. One of its most technical bits is classifying areas where explosive atmospheres might occur.
For gases, vapours and mists, the classifications look like this:
- Zone 0: Explosive atmosphere present continuously or for long periods
- Zone 1: Explosive atmosphere likely during normal operations
- Zone 2: Explosive atmosphere unlikely, or only briefly if it occurs
For dusts. There are different classifications:
- Zone 20: Explosive dust cloud present continuously
- Zone 21: Explosive dust cloud likely during normal operations
- Zone 22: Explosive dust cloud unlikely or only briefly
This means equipment used in these zones must be ATEX-rated and suitable for the classification. Using standard electrical equipment in a Zone 1 area could trigger an explosion.
What Are Common DSEAR Inspection Failures?
During routine inspections, HSE inspectors regularly encounter the same DSEAR failings. Take a look at the extensive list below – don’t get caught out.
- No DSEAR risk assessment has been carried out
- Generic risk assessments are used that don’t address specific substances
- Flammable substances are being stored incorrectly
- Poor ventilation in areas using solvents or sprays
- Ignition sources not eliminated in hazardous areas
- No hazardous area classification completed
- Employees are unaware of DSEAR requirements
- No emergency procedures for dangerous substance incidents
- Combustible dust allowed to accumulate
- Non-ATEX equipment used in classified zones.
The consequences can be severe, including improvement notices, prohibition notices, prosecution, and, in serious cases, imprisonment for those responsible.
Building DSEAR Competence
DSEAR compliance involves ensuring people have specialist knowledge at all levels of an organisation. Words on paper simply are not enough; both decision-makers and employees must have a working understanding of the risks of dangerous substances in the workplace and how to control them to maintain safety.
Management must understand:
- Their legal duties under DSEAR
- How to commission effective, suitable DSEAR risk assessments
- What resources are required to maintain compliance
- When to call in technical expertise.
Employees must understand:
- Which dangerous substances they work with or are exposed to
- The specific risks of these substances
- How to work safely with these substances, including storage, handling, processing and control measures
- What the emergency procedures are should something go wrong.
Envesca: Providing Expert DSEAR Support
Effective DSEAR compliance relies on specialist knowledge. Particularly around risk assessment and hazardous area classification.
Unfortunately, many businesses don’t have this necessary in-house expertise, making tasks like classifying zones or implementing explosion protection measures challenging.
The answer? Get the help you need from Envesca. We offer consultancy services that can help businesses understand their DSEAR obligations. We can support you in developing compliant risk assessments tailored to your workplace’s specific dangerous substances and processes.
Complexity Made Manageable
Fires and explosions can be devastating, but most are preventable. And that’s where DSEAR comes in. It might seem complex, but the process is straightforward:
- Identify dangerous substances
- Assess the risks they create
- Put proper controls in place.
Whether you’re storing a few cans of aerosol or operating a chemical process plant, understanding and implementing DSEAR protects your people, your business and keeps you on the right side of the law.
Unsure whether your business has DSEAR obligations? Get in touch with Envesca today.
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Envesca offer a number of different training courses, which offer advice and guidance on these topics.
Highfield Level 2 Award in Risk Assessment
This one-day Level 2 Risk Assessment course will provide you with the knowledge and skills to carry out risk assessments.Highfield Level 2 Award in COSHH
This half-day COSHH course will give you the knowledge of the health risks surrounding work with hazardous substances.Highfield Level 3 Award in Risk Assessment
This Level 3 Risk Assessment course will provide you with the knowledge and confidence you need to carry out or review risk assessments.
Legionella Risk Management for Responsible Person
This course will ensure that you understand the effects of legionella bacteria and the impact an outbreak of Legionnaires’ disease would have on your business.Share this article with your social Community.
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