The Explosion Protection Document
— Prepared by a Field Engineer
The EPD is not optional and it is not a formality. It is a legally required document that must reflect the actual state of your facility. An EPD that is incomplete, outdated, or inaccurate is a liability — not an asset.
EPD mandatory since then
a compliant EPD
with hazardous areas
having one — none
Legal Obligation
Every Employer with Explosive Atmospheres Must Have an EPD
Directive 1999/92/EC (the ATEX Workplace Directive) requires employers to prepare an Explosion Protection Document before work begins — and to keep it up to date when the workplace, equipment, or organisation changes.
- Mandatory for all workplaces where explosive atmospheres may occur
- Must be prepared before work commences — not retrospectively after an incident
- Must be reviewed and updated after any significant change to the workplace or process
- Must demonstrate that explosion risks have been assessed and protective measures are in place
- Must cover both equipment protection measures and organisational measures
- Failure to have an EPD is a direct regulatory violation — enforceable by national authorities
Article 8 of the directive requires employers to draw up and keep up to date an Explosion Protection Document — demonstrating that explosion risks have been determined and assessed.
The EPD must show that adequate measures have been taken, that workplaces and equipment are designed and maintained with safety in mind, and that areas have been classified into zones.
The document must be prepared before work commences. When existing workplaces are modified, extended or converted, the EPD must be reviewed immediately and updated.
It must be available to inspecting authorities, workers' representatives, and — in practice — insurance assessors on request.
What the EPD Must Contain
Eight Elements a Compliant EPD Cannot Be Without
A compliant EPD is not a single form — it is a structured document set. Each element must be present, current, and traceable to actual site conditions.
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1Explosion Risk AssessmentIdentification of all locations where explosive atmospheres may occur, with an assessment of the likelihood, duration, and potential consequences of ignition. The risk assessment is the foundation of the entire EPD.
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2Hazardous Area Classification & Zone DrawingsZone classification per EN/IEC 60079-10, with plan and elevation drawings showing zone extents, types (0/1/2, 20/21/22), and required equipment categories. Must be current and match actual plant layout.
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3Substance Data & Ignition Source RegisterAll flammable substances and combustible dusts handled — with flash point, LEL, gas group, and temperature class. All potential ignition sources identified and assessed against protective measures.
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4Ex Equipment RegisterComplete register of all Ex-rated equipment installed in classified areas — with Ex marking, certificate reference, installed location, zone suitability confirmed, and inspection status.
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5Protective & Preventive MeasuresDescription of all technical and organisational measures in place to prevent explosive atmospheres from forming and to prevent ignition. Includes ventilation, inerting, earthing, hot work controls, and permit-to-work systems.
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6Inspection & Maintenance RecordsPeriodic inspection records per EN/IEC 60079-17, maintenance logs for Ex equipment, and records of any non-conformities identified and corrective actions taken.
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7Organisational Measures & Training RecordsATEX training records for personnel working in classified areas, permit-to-work procedures, hot work authorisation process, and contractor management arrangements.
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8Coordination Statement (Multi-Employer Sites)Where contractors or other employers work in classified areas, the EPD must include a coordination statement showing how overlapping operations are managed to prevent mutual risk.
What Goes Wrong
The Most Common EPD Failures Found on Audit
The Service
EPD Preparation & Update — What Is Included
Whether you need an EPD prepared from scratch or an existing document brought up to standard, the output is the same: a complete, audit-ready document set.
Review of any existing documentation against the requirements of Directive 1999/92/EC. A clear gap list — what exists, what is missing, what needs updating — before any work begins.
Site-specific risk assessment identifying all release sources, explosive substances, ignition sources, and existing protective measures. Written to be defensible to regulatory authorities.
Hazardous area classification per EN/IEC 60079-10 with zone drawings in PDF and editable format. Integrated into the EPD with full reference to the classification methodology used.
Complete register of all Ex equipment compiled during site survey. Certificate references, Ex markings, zone suitability, and inspection status recorded for each item.
Training record templates, permit-to-work frameworks, and contractor coordination statement tailored to your site — included as part of the complete EPD package.
EPD update triggered by plant modifications, equipment changes, or periodic review. Available as a retainer arrangement — ensuring your EPD always reflects actual site conditions.
Start with a free 30-minute online assessment. Share what documentation you have and I'll tell you exactly what is missing and what it will take to make it compliant.
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