Bowtie Analysis and Barrier-Based Risk Management

Topic Safety

CPD Hours 14*

Price IChemE Member £760 + VAT / Non-member £950 + VAT


Live online course – from 23 May 2023, 10:00–13:00 BST.

This course will develop your understanding of the bowtie risk assessment methodology and how to conduct a bowtie analysis effectively in process safety management and environmental or asset integrity scenarios. It will demonstrate how the bowtie methodology provides the right level of detail to facilitate understanding and risk-based decision making, without oversimplifying a process.

The course covers when and why you should use the technique, as well as its strengths and limitations. You will also explore other barrier-based risk management approaches and similarities with HAZOP/PHA studies. There will be practical exercises where you can develop your own basic bowtie in collaboration with others.

You will also explore primary and secondary uses of bowties; the potential benefits of adding metadata to bowties; the significance of barrier management; the relationship with operations and maintenance activities; the role that barrier failure has played in familiar incidents; and human and organisational factors in bowties. 

The course aligns with current industry guidance. It is platform neutral and does not favour any specific software.

Teaching will be delivered via two live sessions (approx. 2-3 hours in length each) and pre-recorded video content for independent study.

An e-certificate will be issued to participants who attend all modules and pass an end-of-course assessment. Please note that you must attend all modules to receive the certificate.

Learning outcomes

By the end of this course you will understand how to:

  • when and why to use bowtie analysis
  • individual bowtie components and how they are assembled to illustrate a scenario
  • how to apply bowtie methodology including the process for developing bowties in a sequential, logical order
  • how to facilitate and plan bowtie workshops
  • the interdependencies of bowtie analysis with other barrier-based risk management techniques.

Who will benefit

  • Anyone with a basic knowledge of the bowtie methodology wanting to become more expert in its application
  • Management, engineering and operations/maintenance personnel with responsibility for managing hazards and implementing/sustaining risk control measures

Course outline

  • Bowtie concepts and risk management
  • The bowtie model
  • Bowtie development and workshops
  • Use of bowties
  • Barrier management
  • Human and organisational factors in bowties
  • Advanced bowties


Module 1

Tuesday 23 May 2023, 10:00–13:00 BST.

Module 2

Wednesday 24 May 2023, 10:00–13:00 BST.

Pre-recorded video content will be provided for independent study before/between modules.

Not available then? Register your interest in future dates.


  • IChemE Member: £760 + VAT
  • Non-member: £950 + VAT


Discounts are available to companies booking more than one place:

  • 2 places–10% discount
  • 3 places–15% discount
  • 4 or more places–20% discount.

Bookings must be made at the same time to receive the discount.


Modules will be delivered via Microsoft Teams. If you don't already have this installed, you can join as a guest in order to access the training. We'll share information about how to do this after you've registered.

Train your team

This course can be delivered to corporate teams, either on-site or online. Content can be tailored to your specific requirements, and this could be a cost-effective option if you have several people requiring the training. To find out more and request a quotation, visit our in-company training page.

* CPD hours should be used as an approximate guide and will vary depending on the preferred approach of the delegate and to what extent additional learning is completed.

Contact Phone +44 (0)1788 534496

Contact Email

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Associated course

Process Risk Assessment

From 6 June 2023, 14:00–17:00 BST | Learn about risk assessment in the process industries and why it is key to protecting against process safety incidents.

Aubrey Thyer


Aubrey Thyer

Aubrey is an investigations and safety specialist with SBM Offshore and Director of his own independent health & safety consultancy. He has over 30 years’ experience of conducting fire safety studies and regulatory compliance inspections around the world and in the development and application of regulations and international or company standards.

He worked at the Health and Safety Executive in the UK for for 25 years, where he was Principal Inspector of Health & Safety in the Offshore Fire & Explosion team, with direct responsibility for the management of a team of five inspectors covering fire, explosion and QRA issues for all UK offshore installations holding safety cases, along with the management of all inspections, investigations and assessments involving these topics.

Prior to this, he was a Principal Scientist and Head of the Health and Safety Laboratory's Hazardous Substances Team within the Process Safety Unit, where he managed a team of eight specialists covering fire and explosion issues and fire protection measures, the assessment of COMAH (SEVESO) safety reports, process safety issues, reaction hazards, chemical classification and wider fire & explosion issues.

Aubrey is an IChemE Member and a registered Professional Process Safety engineer.

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