Control of major accident hazards involving dangerous substances directive—snapshot
Control of major accident hazards involving dangerous substances directive—snapshot

The following Environment guidance note provides comprehensive and up to date legal information covering:

  • Control of major accident hazards involving dangerous substances directive—snapshot
  • Brexit impact
  • Aims and objectives
  • Main changes introduced by Seveso III
  • Scope
  • Main obligations for all operators
  • Main obligations—upper tier
  • Main obligations for member state authorities
  • Review
  • England and Wales legislation

Title Directive 2012/18/EU of the European parliament and of the council of 4 July 2012 on the control of major accident hazards involving dangerous substances (Seveso III)
Entry into force 13 August 2012
Deadline for transposition 31 May 2015
Repealing Council Directive 96/82/EC (Seveso II) from 1 June 2015
England and Wales legislation The Control of Major Accident Hazards Regulations 2015 (COMAH 2015), SI 2015/483, Planning (Hazardous Substances) Regulations 2015, SI 2015/627
Subject hazardous substances, major accident prevention

Brexit impact

As of exit day (31 January 2020) the UK is no longer an EU Member State. However, in accordance with the Withdrawal Agreement, the UK has entered an implementation period, during which it continues to be subject to EU law. This has an impact on this content. For further guidance, see: Brexit—impact on environmental law and Brexit Bulletin—key updates, research tips and resources.

Aims and objectives

Seveso III aims to prevent major accidents involving dangerous substances and where