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Online course · Online assessment

DSEAR: Dangerous Substances & Explosive Atmospheres Course & Certificate

Learn to recognise fire and explosion risks from dangerous substances.

  • 6 online modulesLearn at your own pace
  • 20 languagesVoiceover in your language
  • Online assessment20 questions · pass mark 80%
  • Certificate includedPDF download after passing
€35
Everything includedCourse, test & certificate

One payment. No subscription. HSA-aligned.

Training a team? See team prices

Dangerous Substances & Explosive Atmospheres training
Certificate includedOne payment.
Voiceover in 20 languages
Voiceover in 20 languages
How it works

Three simple steps to your certificate

  1. 01
    Complete the course6 short modules, any device
  2. 02
    Pass the assessment20 questions · free retakes
  3. 03
    Download your certificatestraight after you pass
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The course

What You’ll Learn

6 modules in a clear order, then a short online assessment.

01

Introduction and the Law

Dangerous Substances · Explosive Atmospheres · The Law in Ireland · What ATEX Means

02

Fire and Explosion Basics

The fire triangle, the explosion pentagon, flammable range, dust explosions and ignition sources.

03

Dangerous Substances

Flammable liquids, gases, combustible dusts and oxidisers, flash point, labels and safety data sheets.

04

Risk Assessment

What the assessment must consider, the competent person, recording and review.

05

Control and Mitigation Measures

Reducing substances, controlling releases and ignition, hazardous area zoning and ATEX equipment.

06

Roles, Responsibilities and Emergency Arrangements

Employer Duties · Emergency Arrangements · Information, Instruction and Training · The Explosion Protection Document

The price

Everything Included

One payment. No subscription, no renewal fee.

  • ✓ 6-module online course
  • ✓ Online assessment · 20 questions
  • ✓ Free, unlimited retakes
  • ✓ Certificate as soon as you pass
  • ✓ No subscription
See everything included
  • ✓ Certificate verification page for employers
  • ✓ Lifetime access to your account and records
  • ✓ Works on phone, tablet and desktop
  • ✓ Free Business Account to assign the course to staff
  • ✓ 14-day money-back guarantee
€35
One payment
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14-day money-back guarantee · no card needed to create an account

Who it’s for

Who Should Take Dangerous Substances & Explosive Atmospheres

Process & manufacturingSites handling solvents, fuels or combustible dust.
Fuel & chemical storageDepots, forecourts and chemical stores.
Food & agricultureFlour, sugar, grain and other combustible dusts.
Maintenance & contractorsPeople working in or near hazardous areas.
The legal position

What Irish Law Actually Requires

Written plainly, with the source named so you can check it yourself.

The regulation

Explosive atmospheres at work are covered by Part 8 (Explosive Atmospheres at Places of Work, Regulations 167–175) of the General Application Regulations 2007, together with the Chemical Agents Regulations 2001.

What the employer must do

  • Assess the risk of explosive atmospheres
  • Classify hazardous areas into zones
  • Use equipment suitable for each zone (ATEX)
  • Control ignition sources, train workers and prepare an explosion protection document

The explosion pentagon

  • Fuel
  • Oxygen
  • Ignition source
  • Dispersion
  • Confinement

Awareness training

This course explains the principles. Area classification and explosion protection documents should be prepared by a competent person.

Be clear about what this course is. It is online awareness training on dangerous substances and explosive atmospheres. It does not qualify anyone to classify hazardous areas or approve equipment.
The certificate

What You Receive

Issued to your account the moment you pass the assessment. Download it as a PDF, print it, or send it straight to your employer.

Issued
Immediately when you pass the online assessment
Format
PDF download from your account, plus a copy by email
Shows
Your name, the course, a validation code, and the starting and expiry dates
Validity
Your certificate carries a starting date and a three-year expiry date, which is the point we recommend you refresh. Irish law sets no fixed expiry for this training; your employer may set a shorter interval.
Access
Stays in your account for life — re-download any time, at no cost

Safety Courses Online issues this certificate as the training provider. It records completion of online training and does not replace the task-specific instruction, supervision and assessment your employer must provide.

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FAQ

Frequently Asked Questions

Everything worth knowing before you enrol.

The course is written for Irish workplaces and follows the Irish legislation and guidance set out above. Requirements differ between jobs, so if you are training for a specific employer it is worth confirming with them that it meets their needs before you buy.

There are 20 multiple-choice questions and the pass mark is 80%. The answers are marked instantly, and if you do not pass you can review the modules and retake it as many times as you need at no extra charge.

As soon as you pass the assessment. It is issued to your account straight away and you can download it as a PDF.

Yes. The modules and the assessment work on a phone, tablet or computer, and your progress is saved as you go.

Email us within 14 days of your purchase and we will refund you in full. You do not need to give a reason. This is our own guarantee, offered on top of your statutory rights rather than instead of them.

No. €35 covers the course, the assessment, any retakes and the certificate. There is no subscription and no renewal charge.

More about this course: modules, assessment, Irish law
The assessment

How the Assessment Works

The assessment only asks about what the modules cover — nothing you have not been taught.

01

Finish the 6 modules

Work through each module at your own pace. Your progress is saved, so you can stop and come back later.

02

Take the online assessment

20 multiple-choice questions on what the modules cover. The answers are marked instantly.

03

Pass with 80%

If you fall short, review the material and try again — retakes are free and unlimited.

04

Download your certificate

As soon as you pass, your certificate is issued to your account as a PDF you can print or send to your employer.

Who it’s for

Who Should Take Dangerous Substances & Explosive Atmospheres

Process & manufacturingSites handling solvents, fuels or combustible dust.
Fuel & chemical storageDepots, forecourts and chemical stores.
Food & agricultureFlour, sugar, grain and other combustible dusts.
Maintenance & contractorsPeople working in or near hazardous areas.
The legal position

What Irish Law Actually Requires

Written plainly, with the source named so you can check it yourself.

The regulation

Explosive atmospheres at work are covered by Part 8 (Explosive Atmospheres at Places of Work, Regulations 167–175) of the General Application Regulations 2007, together with the Chemical Agents Regulations 2001.

What the employer must do

  • Assess the risk of explosive atmospheres
  • Classify hazardous areas into zones
  • Use equipment suitable for each zone (ATEX)
  • Control ignition sources, train workers and prepare an explosion protection document

The explosion pentagon

  • Fuel
  • Oxygen
  • Ignition source
  • Dispersion
  • Confinement

Awareness training

This course explains the principles. Area classification and explosion protection documents should be prepared by a competent person.

Be clear about what this course is. It is online awareness training on dangerous substances and explosive atmospheres. It does not qualify anyone to classify hazardous areas or approve equipment.

Want more detail?

Read the full course programme, assessment and guidance for your workplace.

View full course information →

Ready to complete your explosive atmospheres training?

Create your free account now and pay the one-off €35 when you are ready to start. Your certificate is issued the moment you pass.

Get Certified Today
Certificate included · Online assessment · Free retakes · Lifetime account access
Map of Ireland - online training available in every county

Online training across all of Ireland

From Dublin and Cork to the smallest town and the most remote corner of Ireland, your course is available wherever you are. Start online, learn at your own pace on any device and receive your HSA-aligned certificate after completing the course requirements.

  • Every city, town and remote community
  • Available nationwide
  • Instant PDF certificate
  • Any device, anytime
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For business

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