Major Accident Hazard Analysis- SEVESO III


Major accident hazard analysis, either in the context of the SEVESO III Directive or as a stand-alone study, is a powerful tool that helps understand hazards, determine their likelihood of occurrence as well asimplement all necessary actions to prevent and mitigate consequences.

By demonstrating the area affected by certain levels of thermal radiation, overpressure and toxic dose after a major accident (Consequence Modelling), emergency procedures can be effectively updated whereas the siting of safety critical equipment can be decided in order to maintain integrity and operability. Furthermore, cost-effective and practical solutions can be applied and improve occupied buildings design to ensure the ongoing safety of personnel.

Quantitative Risk Assessment (QRA) 

A Quantitative Risk Assessment (QRA) generates individual risk contours, demonstrating in this way the risk to people due to operation of a facility. This method, as itadopts amore probabilistic approach, provides visualisation of the importance of existing measures, helps decide future modifications and implement a proactive risk based inspection regime.



  • Consequence modelling (EFFECTS Software).
  • Quantitative Risk Assessment (RISKCURVES Software).
  • Occupied Building Risk Assessment.
  • Safe Transport of Dangerous Loads studies (ADR studies).
  • Accord Dangerous Routier training.
  • SEVESO III Studies (Safety Reports and Notifications).
    1. Determination of whether the establishment is covered by the requirements of SEVESO III Directive (aggregate rule, rule 2%, etc.).
    2. Description of hazardous substances in accordance with Regulation (EC) No. 1272/2008 (CLP).
    3. Hazard identification using “PHA-PRO” software (HAZOP, HAZID).
    4. Assessment of the extent and severity of the consequences of identified major accidents.
    5. Elaboration or revision of Emergency Plan.
    6. Elaboration or revision of Major Accident Prevention Policy.
    7. Overview of Safety Management System and proposals for improvement in the context of major accidents prevention.


Industrial Safety