Six fields of work, from scenario to report.
Each assignment is scaled to your facility: from a short report to a full risk study with quantitative assessment.
OPAM studies
Short reports and risk studies under the Swiss Major Accidents Ordinance, from scenario selection to risk assessment and measures.
- Short report and risk study
- Consequences for the population
- Surface water risks and ecotoxicological assessments
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- Cumulative curve and FOEN assessment criteria
- Risk reduction measures following the ALARP principle
Risk assessment
We prepare and facilitate the studies with your operations, maintenance and engineering teams, then deliver a usable report: scenarios, existing barriers and prioritised recommendations, with follow-up.
- Preliminary hazard analysis (PHA, HAZID)
- HAZOP, What-If and checklists
- FMEA of critical equipment
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- Bow-tie analysis and safety barriers
- LOPA and target safety integrity levels (SIL)
Consequence modelling
Effect distances mapped for each threshold, for toxic releases, fires and explosions, for existing facilities and at project stage.
- Atmospheric dispersion of toxic releases
- Toxic smoke from battery fires
- Pool fires and jet fires
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- Vapour cloud explosions and BLEVE
- Pre-project modelling to validate a site layout
- Assessment of ventilation discharge points and their effects
- Indoor releases, with dilution by ventilation
- Support for indoor ATEX zoning in specific cases
Quantitative risk assessment (QRA)
We quantify your risk in a rigorous, traceable way, to support your investment decisions, defend your case with the authority and target the measures that genuinely reduce it.
- Cause-consequence trees (bow-tie)
- Accident scenario frequencies
- Individual risk and F/N curves
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- Risk reduction measures following the ALARP principle
ATEX and explosion protection
Hazardous area classification, ignition source assessment and explosion protection documents.
- Area classification to EN 60079-10-1 (gas) and EN 60079-10-2 (dust)
- Ignition source assessment
- Explosion protection document
Storage concepts
Complete concepts for chemical storage: product classification, storage rules, rooms and containment, in line with Swiss guidance and fire protection requirements.
- Product classification and compatibility
- Segregation, safety cabinets and storage rooms
- Spill containment
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- Firefighting water retention
- VKF/AEAI 26-15 hazardous substances requirements
From OPAM short report to risk study
When the authority cannot rule out serious damage, the short report is followed by a risk study. Risk is then assessed on a cumulative curve, compared with the FOEN criteria.
All about our OPAM studies →References recognised by the authorities.
A project or a facility to assess?
Tell us about your facility, the substances involved and your deadline, and we will propose a suitable approach.