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Basic Analysis for Risk Management according to Bow Tie Method
The bow-tie method for risk analysis originated in the aviation and oil and gas sectors to manage complex operational risks and was first developed by Imperial Chemical Industries in 1979. It has since become a standard tool, adopted by Royal Dutch/Shell Group and expanded to various industries, including healthcare and mining. The method establishes a clear link between risk controls and health, safety, and environmental management systems, enhancing understanding and management of risks.
Basic Analysis for Risk Management according to Bow Tie Method
- 1. HISTORY OF BOW-TIEMETHOD The Bow Tie method for risk analysis has its origins in the aviation and oil and gas industries. It was developed to provide a systematic approach to understanding, analyzing, and managing risks associated with complex and potentially hazardous operations. While the exact historical details may vary, here is a overview of the evolution of the Bow Tie method: The company Imperial Chemical Industries, a British chemical company that manufactured paints and chemical products, made bow tie diagrams based on notes from the Hazan course given at the University of Queensland - Australia in 1979. Royal Dutch / Shell Group adopted the Bowtie method as the company's standard for the analysis and management of its risks - 1988. After Shell, Bowtie's method quickly gained support throughout the industry, as Bowtie diagrams appeared to be a visual tool. In the last decade Bowtie's method has also spread outside the oil and gas industry to include aviation, mining, maritime, chemical and healthcare sectors.
- 2. RISK EVALUATION &MANAGEMENT Policy & Strategic Objectives Organisation, Resources & Competence Risk Evaluation & Management Planning, Standards & Procedures Implementation & Monitoring Audit Management Review Leadership & Commitment Corrective Actions Continuous Improvement HSE Management System An HSE-MS is a structured set of controls for managing HSE risk in a business. Identify Assess Control Recover
- 3. BASIC RISK EVALUATION& MANAGEMENT MODEL Identify Assess Control Recover Risk Tolerability & ALARP Document
- 4. LINK WITH HSE-MS Unliketraditional risk evaluation tools, the bow- tie method makes the link between risk controls and the HSE-MS: Links are made via HSE-critical roles and responsibilities, HSE critical procedures, HSE critical equipment and systems, etc. identified on the bow-tie diagram
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- 6. Recover Control Assess Identify BOW-TIE DIAGRAM Hazard andHazard Source Consequence 1 Consequence 1 Consequence 1 Consequence 2 Consequence 1 Consequence 3 Threat 1 Threat 2 Threat 3 Top Event Threat Control Recovery Measure Recovery Measure Recovery Measure Recovery Measure Recovery Measure Recovery Measure Threat Control Threat Control Threat Control Threat Control Threat Control
- 7. uction to Bow-tieMethod TYPICAL APPLICATION OF BOW-TIE METHOD Potential Risk Level Level of Analysis & Control But method is equally applicable to routine risks as major risks Judgement Standard Competences Procedures Responsibilities Performance Measurement Detailed Analysis e.g. bow-ties High Risk Medium Risk Low Risk Reduce to medium or low risk Demonstrate Risk reduction to ALARP Continue to manage for improvement Risk Management Objective
- 8. PRACTICAL USES Logical structured approach Whatare our major risks? Communication How do we engage non-risk specialists? Formal demonstration Can we really demonstrate control of our risks? Specific risks Are these risks properly understood and controlled? Critical roles Do our people know what is expected of them? Competencies Are competence and control requirements aligned? Procedures Are they complete and effective? Auditing How can we focus audits on what really matters? Critical systems and performance standards What are they?
- 9. Prevention Mitigation HSE CriticalTasks Responsible parties Visually demonstrate and communicate the link between controls and the management system LINK BETWEEN BOW-TIES & HSE – CRITICAL ASKS
- 10. LINK BETWEEN BOW-TIESAND TRAINING & DEVELOPMENT Competent people provide resilience against major risks HSE-critical task HSE-critical role Task competencies Training requirements HSE-critical task catalogue Accountability packs …to ensure each risk control works… Assess people against requirements Personal T&D plans …use Competency Mgmt System
- 11. LINK BETWEEN BOW-TIESAND AUDITING HSE -CRITICAL TASK LIST Task 1: ………………………….. Task 2: ………………………….. Task 3: ………………………….. Responsible Person: Supervisor AUDIT CHECKLIST Task 1 ……. Task 3 ……. Foreman Task 5 ……. Task 9 ……. Task 11 …... Supervisor Audits can be focused on what really matters
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