Dangerous Substances and Explosive Atmospheres (DSEAR) Implementation

Dodman offers considerable experience in the implementation of DSEAR in the food industry where food-based dust can form potentially explosive atmospheres. The food industry requires that plant is designed to ensure high standards of food safety, hygiene and practical operability. Our engineers are experienced in each of these areas.

Many food manufacturing and processing plants across the United Kingdom are under pressure to conform to DSEAR regulations. A considerable amount of plant falls short of the obligations placed on employers to comply with DSEAR.

Dodman is usually engaged following a high-level DSEAR assessment to implement the changes necessary to achieve DSEAR compliance. This work often requires the completion of the following areas of work:

Design philosophy

This summarises the project and draws upon detailed reports

  • Scope of the project
  • Review of initial hazardous area assessments
  • Materials handled (See material Dossier)
  • Process description
  • Previous configuration
  • Proposed configuration
  • Explosion hazard review
    • Materials
    • Ignition sources (See ignition source assessment)
    • Control measures
    • Housekeeping
    • Maintenance
  • Hazardous area classification (HAC)
  • Equipment conformity assessment
  • Risk assessment and risk reduction
  • Basis of safety
  • Vessel strength calculations


Material dossier

A catalogue of potentially explosive materials handled

  • Datasheets
  • Test reports
  • Design data


Hazardous area classification

Usually, verification of earlier HAC reports in accordance with EN 60079-10-2

(Our area of expertise is dust, not gas)


Ignition risk assessment

A detailed look at all potential ignition sources in accordance with EN ISO 80079-36: 2016 and EN 60079-14


Risk reduction

Using Ignition risk assessment, HAC and plant knowledge


Component compliance dossier

Catalogue of ATEX equipment required to satisfy risk reduction

  • Verification of ATEX certificates
  • Functional safety


Vessel structural report

Calculations for the strength of vessels used to contain potential explosions, usually in accordance with EN 14460 explosion resistant equipment

  • Finite element reports as required


Process drawings

  • P&ID, HAC drawings


Mechanical drawings

  • General arrangements
  • Detailed drawings as required


Electrical design

We work closely with suitably qualified electrical specialists.


Certificate of compliance

Dodman will issue a signed certificate of conformance which is fully supported by a detailed report demonstrating how compliance has been achieved and ongoing requirements to maintain compliance.

If you would like to discuss your DSEAR requirements please give us a call, we will be pleased to discuss your specific requirements.