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Expert CDOIF environmental risk assessments and COMAH compliance consulting. MATTE screening, ALARP mitigation, and practical solutions for industrial sites.
Our multidisciplinary team of environmental scientists, engineers and process safety specialists deliver robust CDOIF Environmental Risk Assessments (ERA) and COMAH compliance support for upper and lower tier sites. We follow the CDOIF environmental risk tolerability framework, combining Source–Pathway–Receptor (SPR) analysis, MATTE screening and detailed consequence modelling to help you understand, manage and mitigate major environmental accident risks.
From initial screening to detailed quantitative assessment, we integrate technical expertise in environmental science, hydrogeology, civil engineering and structural design to produce defensible, regulator-ready outputs.
Phase 1: CDOIF screening and MATTE identification
Phase 2: Detailed ERA and tolerability assessment with severity, duration and sensitivity scoring
Ecological and habitat sensitivity mapping
Pollution prevention and contingency planning
ALARP demonstration with cost-benefit analysis
Site visits and full setting assessment
Bund permeability testing and capacity checks
Hydrostatic and hydrodynamic bund strength assessments
Catastrophic tank failure and oil migration modelling
Secondary and tertiary containment assessments
3D storage tank surveys and laser scanning data capture
Fire, blast and gas hazard identification
Occupied Building Risk Assessments (OBRA)
Major Accident Hazard (MAH) identification
Flammable and toxic gas dispersion modelling
DSEAR assessments
Heat transfer, ventilation and smoke movement analysis
Non-linear, dynamic time history modelling
COMAH safety report preparation and updates
Hazardous substances consent support
Bespoke mitigation design and engineering solutions
Training materials and process safety awareness
Liaison with regulators and asset management teams
Integrated expertise across environmental risk, engineering, ecology, and process safety
Proven compliance record with COMAH Containment Policy and CDOIF guidance
Efficient, data-led approach using advanced modelling, mapping, and laser scanning
Practical recommendations that are achievable on-site and regulator-approved
Clear MATTE screening results with prioritised actions
Defensible ALARP justifications supported by cost-benefit analysis
Reduced regulatory uncertainty and faster approvals
Improved site safety and environmental protection
It’s a structured process for evaluating environmental risks from major accident hazards, following guidance from the Chemical and Downstream Oil Industries Forum.
A Major Accident to the Environment, defined by significant, long-term harm to sensitive environmental receptors.
Usually required for COMAH sites during safety report preparation, updates, or pre-construction safety submissions.
“As Low As Reasonably Practicable” — a standard for reducing risks to acceptable levels, justified by cost-benefit analysis.
