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Diesel Compliance: Navigating DSEAR & Pollution Regulation

I Ensure Businesses Are DSEAR & Pollution Regulation Compliant

Navigating fuel storage regulations can be complex. I provide a comprehensive, “boots-on-the-ground service to ensure your site is safe, legal and environmentally sound

Is Your Fuel Installation Compliant?

compliant you need:

  1. DSEAR risk assessment covering diesel storage and use on site.
  2. Hazardous area classification around tanks, pipework and dispensing points (following EI 15 or equivalent guidance.
  3. Oil storage controls: 110% secondary containment, no uncontrolled outlets, protection from drains and watercourses.

Regulations change, and equipment degrades. A professional audit is the only way to ensure your business is protected from both fire risk and environmental prosecution

If any of these are missing, outdated or poorly documented you are carrying avoidable legal, safety and financial risk

What You Get: Four-Step Compliance Process

1. Site Visit & Technical Review

I inspect your fuel tanks, fill points, bunds, venting and dispensing systems to understand how diesel actually moves through your site-not just what is on the drawings.

2. Clear Prioritised Report

You receive a concise assessment of your compliance status, key risks and exactly what needs to change – ranked by urgency and cost impact.

3. Formal DSEAR & EI 15 Assessment

I apply current guidance on high flashpoint fuels to classify hazardous areas proportionately. I use temperature and mist-formation criteria, where necessary to avoid unnecessary zoning where evidence supports this.

4. Zoning Drawings & Action Plan

You get defensible hazardous area drawings, where necessary plus practical recommendations for hardware, procedures and testing that your team, insurers and regulators can understand.

DSEAR Risk Assessments for Diesel Storage: What You Need to Know

If your business stores or dispenses diesel, you are legally required to carry out a DSEAR risk assessment – many operators don’t realise this.

Why Diesel Now Falls Under DSEAR

Since 2015, diesel has been reclassified as a flammable liquid under the EU CLP Regulation, which raised the flashpoint threshold to 60°C. This change brought diesel, for the first time, within the scope of the Dangerous Substances and Explosive Atmospheres Regulations (DSEAR). The Health and Safety Executive’s (HSE) guidance document HSG176 (updated in 2015) now includes specific requirements for diesel storage and dispensing installations.

When Does Diesel Actually Become Dangerous?

The HSE is clear that diesel doesn’t typically pose a significant explosive atmosphere risk at normal ambient temperatures. However, the risk changes when mist or spray is generated – for example during splash filling, a pressurised release, or from a leaking joint in a pressurised line. HSG176 specifically identifies hazardous zones around diesel dispensing nozzles as areas of concern.

Seasonal temperature changes also matter more than people realise. On a cold winter’s day the risk is minimal, but inside an enclosed pump cabinet or bunded area during summe, temperatures can realistically reach 40°C or higher. That narrows the margin between ambient temperature and diesel’s flashpoint, making any mist or spray significantly more hazardous.

Is a DSEAR Risk Assessment a Legal Requirement?

Yes. A DSEAR risk assessment is a statutory requirement under DSEAR Regulation 5. The good news is that it does not need to be a burdensome exercise. A proportionate assessment should:

  • Identify the specific locations where mists or sprays could occur.
  • Set out practical measures to eliminate or reduce those risks
  • Protect both your workforce and your business from liability

Getting this right isn’t just about compliance – it is about ensuring your fuel site is genuinely safe all year round.

Need Help with Your DSEAR Risk Assessment?

Whether you are reviewing existing provisions or starting from scratch, a structured DSEAR assessment for your diesel installation will give you confidence that you are meeting your legal obligations and keeping people safe.

Contact Simon Fowler Now for a DSEAR Risk Assessment

This Service Is For You If:

  • You manage backup generators, fuel tanks or standby power systems
  • You need current DSEAR documentation for compliance or insurance
  • You run depots, workshops, plant yards or data centres with diesel storage
  • You have been quoted eye-watering sums for ATEX upgrades and want a second opinion
  • You are facing an audit, inspection or insurance review and your paperwork is out of date

What Makes This Different

Evidence-based, not box ticking. I don’t copy-paste generic templates. Every assessment is built around how your site actually operates.

Cost-aware, I prioritise findings by risk and impact so you can make informed decisions about what to fix first-and what can wait.

Defensible, my assessments stand up to insurer scrutiny, HSE questions and technical challenge because they are based on current guidance and site-specific evidence.

No unnecessary upselling. If you don’t need ATEX equipment, I won’t tell you to buy it.

Book a no-obligation site visit

+44 (0) 7976 942903

email: simon@smfdesign.co.uk