The Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations 2016 Originally the 1996 version implemented the requirements of EU Directive 94/9/EC 1 This was amended in to the current 2016 version to implement the replacement Atex Directive 2014/34/EU The Product Safety and Metrology etc. (Amendment etc.) (EU Exit) Regulations 2019" (Statutory Instrument No 696. Section 25). amends the 2016 regulation, replacing all working relating to the Atex directive and EU laws. . For information relating to amendments and interpretation under Brexit please refer to the November 2020 guidance notes.

It requires the "responsible person"(usually a manufacturer or their authorised representative) who places equipment on the market or puts equipment into service, has ensured that the essential health and safety requirements for the equipment have been satisfied. This includes carrying out the relevant conformity assessment procedure and application of the CE mark.

Directive 99/92/EC on minimum requirements for improving the safety and health protection of workers potentially at risk from explosive atmospheres2 was implemented by:

Dangerous Substances and Explosive Atmospheres Regulations UK 20023  (DSEAR)

Which requires the following to be carried out and documented:

  • Site Risk Assessments
  • Hazardous area classifications (Zones)
  • Permit to work procedures
  • Assessment of all electrical and non-electrical equipment
  • Electrical equipment and installations are documented inspected and maintained
  • procedures and equipment are available to deal with incidents
  • Information and training are provided for employees


  1. After a transition period EPS became mandatory in June 2003 

  2. Explosive Atmospheres Directive (ATEX 137) 

  3. Implemented in Northern Ireland 2003