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Services

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Environment

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  • Ecology & Biodiversity
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  • Net Zero and Decarbonisation Training

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Bund & Containment Solutions
Home | Services | COMAH | Bund & Containment Solutions

Bund & Containment Solutions

Bund & Containment Inspections and Solutions

View All COMAH Services
tank bund inspections

COMAH Containment & Firewater Modelling | Bund Overtopping & Hydraulic Risk

Arthian delivers advanced modelling and containment assessments to support COMAH compliance across Upper and Lower Tier sites. Our team combines process safety, structural engineering, and environmental risk expertise to simulate firewater runoff, bund overtopping, and loss of containment scenarios—ensuring risks are understood, mitigated and documented to a level that is As Low As Reasonably Practicable (ALARP).
 
We support:
 
Distilleries and drinks manufacturing

     

  • Chemical and pharmaceutical facilities
  • Energy from waste and renewables
  • Industrial gases, fuels and bulk storage
  • High-risk manufacturing and processing sites

Our Modelling & Containment Services

Whether you’re preparing a COMAH Safety Report, responding to inspection findings, or planning infrastructure upgrades, our modelling helps you make informed, regulator-aligned decisions.

Our Services

We also support bund inspection programmes, firewater containment planning, and emergency response strategy development.

Hydraulic & Structural Modelling
Containment System Design & Assessment
Integration with COMAH Safety Reports
bunds inspection and containment engineering consultants

Hydraulic & Structural Modelling

  • Firewater runoff and overland flow modelling
  • Bund overtopping and tertiary containment assessment
  • Catastrophic tank failure modelling
  • Hydrodynamic bund strength and wave loading analysis
  • Non-linear, dynamic time history analysis for bund walls and tank foundations
process safety reports UK

Containment System Design & Assessment

  • Bund permeability testing and integrity surveys
  • Secondary and tertiary containment strategy development
  • Below-ground oil migration modelling
  • Bund capacity verification and topographic modelling
  • Heat transfer, ventilation and smoke movement analysis
DSEAR Assessment Consultancy

Integration with COMAH Safety Reports

  • Source-pathway-receptor modelling for environmental risk
  • CDOIF-aligned consequence analysis for MATTE scenarios
  • ALARP justification and cost-benefit analysis
  • Predictive Climate Risk Assessment (PCRA) for future resilience
bunds inspection and containment engineering consultants

Hydraulic & Structural Modelling

  • Firewater runoff and overland flow modelling
  • Bund overtopping and tertiary containment assessment
  • Catastrophic tank failure modelling
  • Hydrodynamic bund strength and wave loading analysis
  • Non-linear, dynamic time history analysis for bund walls and tank foundations
process safety reports UK

Containment System Design & Assessment

  • Bund permeability testing and integrity surveys
  • Secondary and tertiary containment strategy development
  • Below-ground oil migration modelling
  • Bund capacity verification and topographic modelling
  • Heat transfer, ventilation and smoke movement analysis
DSEAR Assessment Consultancy

Integration with COMAH Safety Reports

  • Source-pathway-receptor modelling for environmental risk
  • CDOIF-aligned consequence analysis for MATTE scenarios
  • ALARP justification and cost-benefit analysis
  • Predictive Climate Risk Assessment (PCRA) for future resilience
Why Choose Arthian's Engineering team?

Why Choose Arthian's Engineering team?

Engineering services delivered by specialists:

Integration

Fully integrated with geotechnical, hydrological, and ecological disciplines.

Our Experience

National experience with regional insight and regulatory familiarity.

Our Understanding

Deep understanding of planning, infrastructure, and environmental interfaces.

Results Driven

Commitment to technical rigour, clear communication, and long-term outcomes.

Frequently Asked Questions

Do I need firewater runoff modelling for COMAH?

Yes—firewater runoff can cause a Major Accident To The Environment (MATTE). Hydraulic modelling helps define containment volumes, flow paths and receptor risks.

What is tertiary containment?

Tertiary containment refers to systems that prevent off-site environmental impact if primary and secondary containment fail. Examples include sacrificial areas, lagoons and shut-off valves.

Can you model catastrophic tank failure?

Absolutely. We simulate dynamic fluid release, bund overtopping and structural impact using validated hydrodynamic models.

Do you assess bund integrity and capacity?

Yes—we offer bund permeability testing, capacity modelling, and structural appraisal aligned with CIRIA C736 and COMAH containment policy.

Get in Touch

We’d love to hear from you – whether you have a question, a project in mind, want to explore job opportunities, or just want to say hello.

Contact Us
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