Major Accident Hazard Understanding Strengthening understanding of major accident hazards to reduce risk. A Major Accident Hazard is a source of danger that has the potential to cause a major incident, whether that involves multiple fatalities and/or significant damage to plant, equipment or the environment. Managing Major Accident Hazards is vital to safe operations. Everybody working in the oil and gas industry, both onshore and offshore, has a part to play in managing these hazards. To control Major Accident Hazards, barriers must be put in place. These barriers help prevent a Major Accident happening or mitigate the effects of a Major Accident if one were to occur. To help those working in the industry identify the barriers and understand the part they play in ensuring these barriers are fit-for-purpose, the Step Change in Safety Major Accident Hazard Understanding workgroup has developed a suite of educational resources for members to use. Barriers in place to keep us from harm Barriers can be classified as either plant, processes or people. They must work independently to stop the event from occurring or escalating. However, when there are multiple barriers, they can work together to provide layers of protection. There are different ways of demonstrating how barriers work together to manage Major Accident Hazard risks and the bowtie model is one common and effective way. The bowtie model shows the threats on the left-hand side and the consequences on the right-hand side, with the incident being the knot in the middle. Barriers placed on the left hand side prevent the incident occurring and the barriers on the right-hand side mitigate the consequences if an incident were to happen. The bowtie below shows some barriers that could prevent or mitigate against a major accident. (Note some barriers could sit on either or both sides) Click on each barrier on the bowtie image to access information and resources Major Accident Hazard Awareness Films and Packs A series of animated films and presentations to improve understanding of Major Accident Hazards, risk analyses, bowties and SECEs, barrier maintenance and barrier assurance & verification. Watch or download the trailer for free. m4v MAH trailer View Resource Process Safety Leadership Survey Report Major Accident Hazards Awareness (Induction film) 2021 The film is ideal for teaching or reminding personnel about MAHs and could be included as part of an induction Joined-up Thinking film A member of the work party exercises their right to stop the job thus preventing a potentially significant hydrocarbon release Pack 1. Major Accident Hazard identification and risk analysis 1. Definition of an MAH; 2. Understand the potential worst case scenario; 3. MAHs are risk assessed; 4. What is a safety case? Pack 2. Bowties and Safety and Environmental Critical Elements 1. What is a barrier?; 2. What is a SECE?; 3. How do barriers prevent Major Accidents; 4. Barriers in your safety case; 5. What happens if barriers are defeated Pack 3. Barrier maintenance, assurance and Verification 1. How barriers are maintained, who does this and when; 2. What is Verification?; 3. What should you do if a barrier is impaired of fails? Pack 4. Own Your Barrier 1. Everyone, regardless of their job, owns barriers which keep us safe; 2. Examples of people 'owning' their barrier MAH Understanding Vlogs Subject matter experts talk about barriers against Major Accidents Other Resources Everyone working in the oil and gas industry has a part to play in managing Major Accident Hazards. Resources have been developed to help the entire workforce, from boardroom to tea shack, understand what they can do to keep themselves and their colleagues safe from a Major Accident. Resources Suitable for Safety Meetings Emergency Response: Major Accident Hazard Awareness This animated film and presentation aims to:- help people be better equipped to recognize when a barrier on the right-hand side of the bow-tie has been impaired and know what action to take to report it- assure the workforce at muster that there are plans and processes in place and engineered equipment to keep them safe This is Not a Drill: The importance of barriers on the right-hand side of the bowtie Steve Rae, a survivor of the Piper Alpha disaster, introduces why these barriers on the right-hand side of the bowtie should be known, understood and ready to operate when required. Hudson River plane ditching major accident presentation A PowerPoint presentation describing the ditching of an A320 passenger airplane on the Hudson River, New York and the barriers in place which allowed all passengers and crew to survive. Major Accident Hexagons An interactive ‘Blockbusters’ style game, Major Accident Hexagons is designed to provide training material that can be used to educate the workforce on MAHs Remembering Piper - the night that changed our world An impactful account of the events of that night, serving to remind us why remaining vigilant, and Playing Your Part is so important Safety Moment - Major Accident Hazard Awareness This pack contains learnings from both oil & gas and other industries' major accidents. Each mini alert describes the circumstances, what went wrong, and includes discussion points relating to the 7Cs of safety. Texas City - could this happen again? A Safety Moment is based on the US Chemical Safety Board’s animated film of the BP Texas City Refinery explosion which occurred 23rd of March 2005 Barrier Bingo This pack aims to involve the audience, to get them thinking about the Major Accidents Hazards that surround them as they undertake their work tasks, and if the barriers that are in place to protect them from these hazards are in working order and are fit-for purpose. The activity is in the form of a game of bingo. Understanding barriers and building bowties An interactive presentation which guilds the participant through building a bowtie using the example of car safety E-learning for onshore staff All workers travelling offshore must undertake MIST (Minimum Industry Safety Training), which has a Major Accident Hazard module contained within it. For onshore workers, an e-learning module has been developed to help them understand how they can play their part in improving safety offshore. This is particularly useful for roles such as logistics, procurement and HR, who may not realise the impact they may have on preventing Major Accidents and many member organisations include this module in their company inductions. This training is free to all employees of member companies. Contact your company focal point for access to the module. How good is your Major Accident Hazard Understanding Training? Gap analysis tool which can aid the identification of training requirements for technicians, supervisors and managers. xlsx Understanding MAH gap analysis - Supervisors View Resource xlsx Understanding MAH gap analysis - Managers View Resource xlsx Understanding MAH gap analysis - Technicians View Resource WORKGROUP LEADERSHIP Fiona Fitzgerald View Profile Fiona Fitzgerald View linked in profile Fiona FitzGerald entered the oil & gas industry as an undergraduate where she offered business support to a range of clients. During this time, she discovered a passion for safety and has been working to help organizations manage risk for more than 25 years. Fiona has worked extensively across Europe, Africa, Russia and the United States with Baker Hughes. Prior to that, she worked as Facilities Manager in Equatorial Guinea. During her recent 10-year career as Principal Consultant with DNV, Fiona launched the OPITO accredited Elected Safety Representatives’ Development Training. In October 2021, Fiona established Evolve Consulting (Scotland) Ltd to deliver quality, safety, environmental risk management services to the oil & gas and renewables industries. Fiona is a Fellow of the Institute of Training & Occupational Learning, and she is currently pursuing studies in human factors and organisational psychology. Apache > Stuart Taylor Director of Operations View Profile Apache > Stuart Taylor Director of Operations View linked in profile Stuart has more than three decades of experience in the energy industry working both onshore and offshore.Stuart started his career with BP in 1990 as a technician apprenticeship, progressing to Operations Engineer then Offshore Installation Manager. He was involved in Forties Regeneration Project and Beryl field / SAGE acquisition with Apache North Sea.Stuart is currently Director of Operations for Apache North Sea. Major Accident Hazard Vlogs A series of MAH vlogs from industry representatives Meet our workgroup members Major Accident Hazards Understanding - Gillian Ewan, Functional Safety Engineer, DNV Piper Alpha The night that changed our world Major Accident Hazard Understanding Quiz (March 2023) Results 🥇1st place: 'Just a SECE' from LR who have chosen to donate their winnings to cfine 🥈2nd place: 'Beryl' from Apache who are donating their prize money to Spina Bifida Hydrocephalus Scotland 🥉3rd place: 'Golden Eagle' CNOOC who are kindly making a donation to Mental Health Aberdeen Latest Alerts & Learnings Alert 28 May 2026 Safer Together: Fire whilst servicing a well During a workover, tubing was Pulling Out Of Hole (POOH) ‘wet’ using a mud bucket draining to the cellar. After 12 joints, ignition occurred. Fire spread to the cellar. The Emergency Shutdown (ESD) was activated and the crew were mustered. The fire was extinguished shortly after using handheld extin… View Alert HVL 27 May 2026 Fall from height during transfer and delayed rescue due to medical fitness and recovery limitations Who could be interested in this?• Marine and offshore personnel involved in transfer operations• Vessel crews and marine coordinators • Offshore installation and windfarm personnel • Occupational health professionals • Safety advisors and duty holders responsible for fitness-to-work standardsWhat is… View Learning Alert 21 May 2026 Competence matters: Incorrect installation of batteries on a scissor lift (MEWP) A member company recently supplied replacement batteries for an ageing Mobile Elevating Work Platform (MEWP) scissor lift at a university site. The company also provided a quotation to carry out the installation of the batteries – this was declined as the customer advised they had an in-house person… View Alert View all Alerts & Learnings Latest Events 10 Jun 2026 Safety in Decom Network Conference 09:00 - 16:30 (BST) The Chester Hotel, Aberdeen Register 16 Jun 2026 Q2 Safety Rep Forum 14:00 - 15:30 (BST) Online, Teams Webinar Register 18 Jun 2026 Industry Forum: Just a Ladder? - Challenging Normalised Risk 11:00 - 12:30 (BST) Northern Lights Room, Beach Ballroom, Beach Promenade, Aberdeen, AB24 5NR Register 18 Jun 2026 Q2 Site Managers Forum 14:00 - 15:30 (BST) Online, Teams Webinar Register 02 Jul 2026 E-Obs Boost Industry Report 2025 - Session One 10:00 - 11:00 (BST) Online, Teams Webinar Register 02 Jul 2026 E-Obs Boost Industry Report 2025 - Session Two 15:00 - 16:00 (BST) Online, Teams Webinar Register 20 Aug 2026 The Energy Safety Awards 08:30 - 13:30 (BST) P&J Live, E Burn Rd, Aberdeen AB21 9FX Register 10 Sept 2026 Q3: Human Factors Forum 08:45 - 12:00 (BST) 4th floor, Annan House, 33-35 Palmerston Road, Aberdeen, AB11 5PQ Register View all Events Latest News 31 Mar 2026 Nominations open for the newly refreshed 2026 Energy Safety Awards 11 Mar 2026 Industry-Endorsed Process Safety Improvement Plan (PSIP) Guidance launched 4 Mar 2026 Cross-Sector Leadership Engagement Visits Strengthen Safety Learning Across the Energy Industry 31 Oct 2025 New Safety Policy – Safe Weight Limit View all News
Alert 28 May 2026 Safer Together: Fire whilst servicing a well During a workover, tubing was Pulling Out Of Hole (POOH) ‘wet’ using a mud bucket draining to the cellar. After 12 joints, ignition occurred. Fire spread to the cellar. The Emergency Shutdown (ESD) was activated and the crew were mustered. The fire was extinguished shortly after using handheld extin… View Alert
HVL 27 May 2026 Fall from height during transfer and delayed rescue due to medical fitness and recovery limitations Who could be interested in this?• Marine and offshore personnel involved in transfer operations• Vessel crews and marine coordinators • Offshore installation and windfarm personnel • Occupational health professionals • Safety advisors and duty holders responsible for fitness-to-work standardsWhat is… View Learning
Alert 21 May 2026 Competence matters: Incorrect installation of batteries on a scissor lift (MEWP) A member company recently supplied replacement batteries for an ageing Mobile Elevating Work Platform (MEWP) scissor lift at a university site. The company also provided a quotation to carry out the installation of the batteries – this was declined as the customer advised they had an in-house person… View Alert
4 Mar 2026 Cross-Sector Leadership Engagement Visits Strengthen Safety Learning Across the Energy Industry
4 Mar 2026 Cross-Sector Leadership Engagement Visits Strengthen Safety Learning Across the Energy Industry