Major Accident Hazard Understanding

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Major Accident Hazard (noun) a potential source of danger which could cause a Major Accident.


Managing Major Accident Hazards (MAHs) is fundamental to safe operations.  Everyone working in the oil and gas industry, onshore and offshore, has a part to play in managing these hazards.

Resources have been developed to help the whole workforce, boardroom to teashack, understand what a MAH is, how they are identified and how they are mitigated against.

To help develop resources, the workforce was categorised into groups outlined in the triangle diagram.  The resources created are not exclusive to the category to which they have been assigned and may be appropriate for other groups.

Bowtie Exercise Documentation

All workforce

All offshore workers undertake MIST (Minimum Industry Safety Training); a Major Accident Hazard module is contained within this. Recognising that onshore workers play a part in managing Major Accident Hazards, an e-learning module suitable for onshore workers is available.  Step Change in Safety members are able to use this free of charge.  Many companies have now included this as part of their induction process.


Technicians, frontline supervisors, managers

Gap analysis tools to identify the training requirements of offshore jobs have been created and can be accessed through this link

Senior leaders

Workshops have been held to help senior leaders understand their job in managing Major Accident Hazards.  Videos of some of the speakers and the resources used during the ‘Understanding your barriers’ workshop are available here.​